Eimen, J., Schiemann, H., Schroers, J. J., Höller, I., Schreiber, D., Teismann, T., & Forkmann, T. (2026). Thwarted belongingness as a predictor of suicidal ideation: A question of operationalization? Journal of Affective Disorders Reports, 24, 101025. https://doi.org/10.1016/j.jadr.2026.101025

Forkmann, T., Teismann, T., Serebriakova, J., Eimen, J., Spahn, C., Omlor, S., Abilgaard, P., Frings, M., Kudling, R., Kuhn, J., Schäfer, M., Scherbaum, N., Glaesmer, H., & Spangenberg, L. (2026). Suicide-related metacognitions in psychiatric inpatients admitted after suicide attempt or an acute suicidal crisis: A longitudinal mediation analysis. Journal of Psychiatric Research, 196, 44–52. https://doi.org/10.1016/j.jpsychires.2026.01.061

Martens, J., Forkmann, T., & Höller, I. (2026). Characteristics of Mobile Health Interventions for Repetitive Negative Thinking: Protocol for a Scoping Review. JMIR Research Protocols, 15, e72138. https://doi.org/10.2196/72138

Serebriakova, J., Forkmann, T., Eimen, J., Omlor, S., Spahn, C., Abilgaard, P., Frings, M., Kudling, R., Kuhn, J., Schäfer, M., Scherbaum, N., Spangenberg, L., & Glaesmer, H. (2026). Does child abuse influence the persistence of suicidal ideation in patients with high suicide risk? European Journal of Psychotraumatology, 17(1), 2639279. https://doi.org/10.1080/20008066.2026.2639279

Spangenberg, L., Spahn, C., Serebriakova, J., Forkmann, T., & Glaesmer, H. (2026). Qualitative content analysis of reactivity effects and feasibility of ecological momentary assessments of suicide-related thoughts and behaviors in the long-term and in suicidal crises. Frontiers in Psychiatry, 17, 1744947. https://doi.org/10.3389/fpsyt.2026.1744947

Stewing, R., Forkmann, T., Vögtle, E., Harms, F., & Barke, A. (2026). Waiting for pain: Effect of a mindfulness intervention during a wait situation on pain intensity. Frontiers in Pain Research, 6, 1653859. https://doi.org/10.3389/fpain.2025.1653859

Tegethoff, J., Korwisi, B., Kähler, J., Barke, A., Forkmann, T., & Höller, I. (2026). Are Positive Mental Health and Social Support Protective Factors in the Development of Suicidal Ideation in Chronic Pain? A Longitudinal Study. Suicide and Life-Threatening Behavior, 56(2), e70083. https://doi.org/10.1111/sltb.70083

Aschenbrenner, L. M., Brogna, S., Teismann, T., Frei, A., Sedlinská, M.-A., Glaesmer, H., Forkmann, T., Walther, S., Ehnvall, A., & Gysin-Maillart, A. (2025). Psychological Pain in Suicidal and Non-Suicidal Populations: Findings from the Translated German Mee-Bunney Psychological Pain Assessment Scale. Archives of Suicide Research, 1–17. https://doi.org/10.1080/13811118.2025.2573059

Aschenbrenner, L. M., Frei, A., Forkmann, T., Schreiber, D., Glaesmer, H., Brüdern, J., Stein, M., Sedlinská, M.-A., Adorjan, K., Walther, S., & Gysin-Maillart, A. (2025). Exploring suicidal behaviour through implicit identity and control biases: Findings from the Death-Implicit Association Test and its novel control-adaptation. Comprehensive Psychiatry, 142, 152621. https://doi.org/10.1016/j.comppsych.2025.152621

Aschenbrenner, L. M., Frei, A., Knapp, D. J., Forkmann, T., Schreiber, D., Glaesmer, H., Brüdern, J., Stein, M., Walther, S., & Gysin-Maillart, A. (2025). Exploring Implicit Emotional Associations With Death in Patients With Current Suicidal Ideation: Results From Novel Attitude Implicit Association Tests for Suicide. Suicide and Life-Threatening Behavior, 55(5), e70047. https://doi.org/10.1111/sltb.70047

Barke, A., Stewing, R., Wichelhaus, E., Paashaus, L., & Forkmann, T. (2025). Wie könnten wir es Patient_innen sagen?: Ein experimenteller Vergleich von Patient_innenaufklärungen zur Einbindung von Masterstudierenden in die ambulante Psychotherapie. Zeitschrift für Klinische Psychologie und Psychotherapie, 54(2), 64–75. https://doi.org/10.1026/1616-3443/a000804

Forkmann, T., Fiorentino, L., Müßeler, S. S., Schüler, J., Heilmann-Stiegler, T., Barke, A., & Teismann, T. (2025). Thinking About Suicidal Thinking: Suicide-Related Metacognitions’ Relation to Maladaptive Processing of Suicidal Thoughts. International Journal of Cognitive Behavioral Therapy, 18(2), 241–255. https://doi.org/10.1007/s41811-025-00239-2

Forkmann, T., Serebriakova, J., & Teismann, T. (2025). Brief Cognitive-Behavioral Therapy zur Suizidprävention: Zentrale Behandlungselemente und aktuelle Befundlage. Die Psychotherapie, 70(4), 225–230. https://doi.org/10.1007/s00278-025-00775-4

Höller, I., Martens, J., Fönschau, C., & Forkmann, T. (2025). A cross-sectional study on the influence of emotion regulation strategies on the association between trait mindfulness and suicidality. BMC Psychology, 13(1), 340. https://doi.org/10.1186/s40359-025-02530-5

Höller, I., Santangelo, P. S., Dienst, F., Forkmann, T., & Forster, S. (2025). Mentalizing in the moment – An investigation of intrapersonal fluctuations in real-time mentalizing capacity in the context of stress and arousal in an ecological momentary assessment study. Journal of Affective Disorders Reports, 21, 100943. https://doi.org/10.1016/j.jadr.2025.100943

Kolochowski, F. D., Kreckeler, N., Forkmann, T., & Teismann, T. (2025). Reliability of Suicide Risk Estimates: A Vignette Study. Archives of Suicide Research, 29(2), 544–555. https://doi.org/10.1080/13811118.2024.2382709

Melzer, L., Claus, C., Posen, N., Forkmann, T., Rogers, M. L., & Teismann, T. (2025). Psychometric Evaluation of the Revised Suicide Crisis Inventory (SCI‐2) in Germany: Factor Structure, Reliability, and Validity in an Online and Outpatient Sample. Clinical Psychology & Psychotherapy, 32(3), e70106. https://doi.org/10.1002/cpp.70106

Omlor, S., Scherbaum, N., Höller, I., & Forkmann, T. (2025). Heart rate variability and suicidal thoughts and behaviour: Study protocol for a systematic review. Systematic Reviews, 14(1), 193. https://doi.org/10.1186/s13643-025-02954-5

Serebriakova, J., Forkmann, T., Teismann, T., Paashaus, L., Schreiber, D., Schönfelder, A., Juckel, G., & Glaesmer, H. (2025). Exploring the impact of child maltreatment on adult suicidal ideation and suicide attempts. Journal of Affective Disorders, 378, 1–12. https://doi.org/10.1016/j.jad.2025.02.019

Spangenberg, L., Böhler, L., Hoke, T.-M., Serebriakova, J., Eimen, J., Forkmann, T., Strauss, M., Stengler, K., & Glaesmer, H. (2025). Promising or discouraging? Potentials and reactivity of real-time data collection in monitoring suicide-related thoughts and behaviors over weeks and months. Participants’ views on ecological momentary assessments and wearable use. Digital Health, 11. https://doi.org/10.1177/20552076251339265

Spangenberg, L., Glaesmer, H., Hallensleben, N., Schreiber, D., Forkmann, T., & Kaurin, A. (2025). Exploring predictors of passive versus active suicidal ideation: Idiographic analysis of real-time data. Crisis, 46(3), 142–148. https://doi.org/10.1027/0227-5910/a000999

Spangenberg, L., Kraiss, J., Friedrich, M., Forkmann, T., Böhler, L., Strauss, M., Stengler, K., Serebriakova, J., Eimen, J., Teismann, T., Melzer, L., & Glaesmer, H. (2025). Psychometric evaluation of a brief self-report measure and of EMA items assessing the suicide crisis syndrome: Insights on reliability, validity and temporal variability. Psychiatry Research, 348, 116504. https://doi.org/10.1016/j.psychres.2025.116504

Velten, J., Christiansen, H., Hoyer, J., In-Albon, T., Lincoln, T. M., Lutz, W., Margraf, J., Schöttke, H., Stark, R., Werheid, K., Willutzki, U., Alpers, G. W., Bartholdy, S., Berger, E.-M., Brakemeier, E.-L., Bräscher, A.-K., Brockmeyer, T., Dziobek, I., Fehm, L., … Rubel, J. (2025). Effectiveness of cognitive behavioral therapy for adult mental disorders: A large-scale naturalistic study across 29 university outpatient clinics. Behaviour Research and Therapy, 186, 104691. https://doi.org/10.1016/j.brat.2025.104691

Wichelhaus, E., Schreiber, D., Paashaus, L., Schönfelder, A., Juckel, G., Glaesmer, H., Teismann, T., & Forkmann, T. (2025). Validating the German version of the entrapment scale among suicidal psychiatric inpatients. Journal of Affective Disorders Reports, 19, 100862. https://doi.org/10.1016/j.jadr.2024.100862

Wrede, N., Itz, M. L., Risch, A. K., Christiansen, H., In-Albon, T., Hoyer, J., Lincoln, T. M., Lutz, W., Margraf, J., Rubel, J., Stark, R., Velten, J., Werheid, K., Willutzki, U., Alpers, G. W., Bartholdy, S., Berger, E.-M., Brakemeier, E.-L., Equit, M., … Wilz, G. (2025). Quantifying age-related disparities in outpatient psychotherapy utilization: A representation quotient analysis of routine data from 29 university clinics in Germany. BMC Health Services Research, 25(1), 1558. https://doi.org/10.1186/s12913-025-13714-5

Brüdern, J., Spangenberg, L., Stein, M., Forkmann, T., Schreiber, D., Stengler, K., Gold, H., & Glaesmer, H. (2024). Implicit measures of suicide vulnerability: Investigating suicide-related information-processing biases and a deficit in behavioral impulse control in a high-risk sample and healthy controls. Behaviour Research and Therapy, 180, 104601. https://doi.org/10.1016/j.brat.2024.104601

Brüdern, J., Spangenberg, L., Stein, M., Gold, H., Forkmann, T., Stengler, K., & Glaesmer, H. (2024). A suicide attentional bias as implicit cognitive marker of suicide vulnerability in a high-risk sample. Frontiers in Psychiatry, 15, 1406675. https://doi.org/10.3389/fpsyt.2024.1406675

Hensel, L. M., Forkmann, T., Davids, E., & Teismann, T. (2024). Suizidspezifisches Grübeln als Chronifizierungsfaktor suizidalen Verhaltens. Zeitschrift für Klinische Psychologie und Psychotherapie, 53(2), 93–96. https://doi.org/10.1026/1616-3443/a000760

Hensel, L. M., Forkmann, T., & Teismann, T. (2024). Suicide-specific rumination as a predictor of suicide planning and intent. Behaviour Research and Therapy, 180, 104597. https://doi.org/10.1016/j.brat.2024.104597

Melzer, L., Forkmann, T., & Teismann, T. (2024). Suicide Crisis Syndrome: A systematic review. Suicide and Life-Threatening Behavior, 54(3), 556–574. https://doi.org/10.1111/sltb.13065

Spahn, C., Spangenberg, L., Teismann, T., Forkmann, T., Schönfelder, A., Schreiber, D., Paashaus, L., Stengler, K., & Glaesmer, H. (2024). Inanspruchnahme ambulanter Psychotherapie und ambulanter psychiatrischer Behandlung von Männern und Frauen nach stationärer Behandlung aufgrund eines Suizidversuchs oder akuter suizidaler Krise. Psychiatrische Praxis, 51(2), 99–103. https://doi.org/10.1055/a-2163-1448

Teismann, T., Brakemeier, E.-L., Brockmeyer, T., Christiansen, H., Fehm, L., Forkmann, T., Glombiewski, J., Heider, J., Hermann, A., Hoyer, J., In-Albon, T., Kaiser, T., Klucken, T., Lincoln, T. M., Lutz, W., Margraf, J., Odyniec, P., Pedersen, A., Renneberg, B., … Velten, J. (2024). Amelioration of suicidal ideation in routine care psychotherapy: Preliminary findings from a large multicenter assessment. Journal of Affective Disorders Reports, 18, 100843. https://doi.org/10.1016/j.jadr.2024.100843

Teismann, T., Britton, P. C., & Forkmann, T. (2024). Ambivalence model of suicidality [ABS-model]: An orientation model for the treatment of suicidal individuals. Frontiers in Psychiatry, 15, 1449565. https://doi.org/10.3389/fpsyt.2024.1449565

Teismann, T., & Forkmann, T. (2024a). Ambivalenzmodell der Suizidalität (ABS-Modell): Ein Verstehens- und Orientierungsmodell für die Behandlung suizidaler Personen. Verhaltenstherapie, 34(2), 85–92. https://doi.org/10.1159/000540043

Teismann, T., & Forkmann, T. (2024b). Suicide and cognitive processes: Introduction to the special issue. Behaviour Research and Therapy, 182, 104618. https://doi.org/10.1016/j.brat.2024.104618

Teismann, T., Forkmann, T., Glaesmer, H., Alpers, G. W., Brakemeier, E.-L., Brockmeyer, T., Christiansen, H., Fehm, L., Glombiewski, J., Heider, J., Hermann, A., Hoyer, J., Kaiser, T., Klucken, T., Lincoln, T. M., Lutz, W., Margraf, J., Pedersen, A., Renneberg, B., … In-Albon, T. (2024). Prevalence of suicidal ideation in German psychotherapy outpatients: A large multicenter assessment. Journal of Affective Disorders, 351, 971–976. https://doi.org/10.1016/j.jad.2024.02.019

Teismann, T., Siebert, A. M., & Forkmann, T. (2024). Suicidal ambivalence: A scoping review. Suicide and Life-Threatening Behavior, 54(5), 802–813. https://doi.org/10.1111/sltb.13092

Vüst, B., Teismann, T., Knorr, A., Gerdes, C., Hamacher, D., & Forkmann, T. (2024). Quer- und längsschnittliche Zusammenhänge zwischen suizidbezogenen Metakognitionen und maladaptiven Gedankenkontrollstrategien. Verhaltenstherapie, 34(2), 64–74. https://doi.org/10.1159/000539715

Claus, C., Schomberg, J., Cwik, J. C., Glaesmer, H., Forkmann, T., Paashaus, L., Rath, D., Schönfelder, A., Juckel, G., & Teismann, T. (2023). Suicide Attempt Self-Injury Interview (SASII): Initiale Validierung einer deutschen Version. Verhaltenstherapie, 33(2–3), 89–99. https://doi.org/10.1159/000531081

Dienst, F., Forkmann, T., Schreiber, D., & Höller, I. (2023). Attachment and need to belong as moderators of the relationship between thwarted belongingness and suicidal ideation. BMC Psychology, 11(1), 50. https://doi.org/10.1186/s40359-023-01080-y

Forkmann, T., & Höller, I. (2023). Instability matters. The Lancet Psychiatry, 10(5), 307–308. https://doi.org/10.1016/S2215-0366(23)00101-3

Forkmann, T., Knorr, A., Gerdes, C., Vüst, B., Hamacher, D., & Teismann, T. (2023). Metacognitions about suicidal thoughts. Journal of Psychiatric Research, 161, 199–205. https://doi.org/10.1016/j.jpsychires.2023.03.018

Höller, I., Forkmann, T., Hündlings, A., Specka, M., & Scherbaum, N. (2023). Hilfsbedarf und soziale Unterstützung bei psychisch erkrankten Elternteilen mit minderjährigen Kindern. Psychiatrische Praxis, 50(1), 20–28. https://doi.org/10.1055/a-1704-6391

Mehrabi, A., Naghavi, A., Afsharzada, M. E., Friedrich, S., Forkmann, T., Glaesmer, H., & Teismann, T. (2023). Validation of the Farsi version of the Suicide Ideation and Behavior Scale. Frontiers in Psychiatry, 14, 1201193. https://doi.org/10.3389/fpsyt.2023.1201193

Søholm, U., Broadley, M., Zaremba, N., Divilly, P., Nefs, G., Carlton, J., Mader, J. K., Baumann, P. M., Gomes, M., Martine-Edith, G., Pollard, D. J., Rath, D., Heller, S., Pedersen-Bjergaard, U., McCrimmon, R. J., Renard, E., Evans, M. L., de Galan, B. E., Forkmann, T., … Hypo-RESOLVE consortium. (2023). Psychometric properties of an innovative smartphone application to investigate the daily impact of hypoglycemia in people with type 1 or type 2 diabetes: The Hypo-METRICS app. PLOS ONE, 18(3), e0283148. https://doi.org/10.1371/journal.pone.0283148

Tegethoff, J.-L., Forkmann, T., & Höller, I. (2023). Positive Selbsteinschätzung als Resilienzfaktor und motivationaler Moderator im integrativen motivational-volitionalen Modell suizidalen Verhaltens. Verhaltenstherapie, 33(4), 126–135. https://doi.org/10.1159/000531430

Brüdern, J., Hallensleben, N., Höller, I., Spangenberg, L., Forkmann, T., Rath, D., Strauß, M., Kersting, A., & Glaesmer, H. (2022). Sleep disturbances predict active suicidal ideation the next day: An ecological momentary assessment study. BMC Psychiatry, 22(1), 65. https://doi.org/10.1186/s12888-022-03716-6

Forkmann, T., Schwitzky, S., Plein, L., Rath, D., Teismann, T., & Höller, I. (2022). Die deutsche Version der Interpersonal Hopelessness Scale (IHS). Verhaltenstherapie, 32(1–2), 45–54. https://doi.org/10.1159/000522304

Höller, I., & Forkmann, T. (2022a). Ambivalent heroism? - Psychological burden and suicidal ideation among nurses during the Covid‐19 pandemic. Nursing Open, 9(1), 785–800. https://doi.org/10.1002/nop2.1130

Höller, I., & Forkmann, T. (2022b). Brief Self-Report Measure of Agitation: A Psychometric Investigation in a German Sample. Journal of Personality Assessment, 104(1), 110–121. https://doi.org/10.1080/00223891.2021.1912057

Höller, I., Forkmann, T., Natrop, L., Hündlings, A., Specka, M., & Scherbaum, N. (2022). Psychische Auffälligkeiten bei Kindern aus Sicht des psychisch erkrankten Elternteils. Psychotherapie · Psychosomatik · Medizinische Psychologie, 72(8), 362–373. https://doi.org/10.1055/a-1725-8324

Höller, I., Kremers, A., Schreiber, D., & Forkmann, T. (2022). Trapped in my inner prison—Cross-sectional examination of internal and external entrapment, hopelessness and suicidal ideation. PLOS ONE, 17(7), e0270985. https://doi.org/10.1371/journal.pone.0270985

Höller, I., Rath, D., Teismann, T., Glaesmer, H., Lucht, L., Paashaus, L., Schönfelder, A., Juckel, G., & Forkmann, T. (2022). Defeat, entrapment, and suicidal ideation: Twelve‐month trajectories. Suicide and Life-Threatening Behavior, 52(1), 69–82. https://doi.org/10.1111/sltb.12777

Höller, I., Schreiber, D., Bos, F., Forkmann, T., Teismann, T., & Margraf, J. (2022). The Mereology of Depression—Networks of Depressive Symptoms during the Course of Psychotherapy. International Journal of Environmental Research and Public Health, 19(12), 7131. https://doi.org/10.3390/ijerph19127131

Höller, I., Teismann, T., & Forkmann, T. (2022). Perseverative Thinking about Suicide Questionnaire (PTSQ): Validation of a new measure to assess suicide-specific rumination. Comprehensive Psychiatry, 112, 152287. https://doi.org/10.1016/j.comppsych.2021.152287

Kanzler, S., Krabbe, J., Forkmann, T., Tolba, R. H., & Steitz, J. (2022). Animal experiments in biomedical research: Knowledge, self-evaluation and attitudes of biology and medical students. Laboratory Animals, 56(5), 455–465. https://doi.org/10.1177/00236772221080833

Lucht, L., Hallensleben, N., Willhardt, N., Forkmann, T., Rath, D., Glaesmer, H., & Spangenberg, L. (2022). Daily impulsivity: Associations with suicidal ideation in unipolar depressive psychiatric inpatients. Psychiatry Research, 308, 114357. https://doi.org/10.1016/j.psychres.2021.114357

Lucht, L., Spangenberg, L., Forkmann, T., Hallensleben, N., Rath, D., Strauss, M., & Glaesmer, H. (2022). Association of real‐time assessed mood, affect and suicidal ideation in psychiatric inpatients with unipolar depression. Clinical Psychology & Psychotherapy, 29(5), 1580–1586. https://doi.org/10.1002/cpp.2741

Roland, L., Höller, I., Forkmann, T., Glaesmer, H., Paashaus, L., Schönfelder, A., Teismann, T., Juckel, G., & Rath, D. (2022). Suicidal behaviour in the social environment: Does exposure moderate the relationship between an individual’s own suicidal ideation and behaviour? Clinical Psychology & Psychotherapy, 29(4), 1309–1320. https://doi.org/10.1002/cpp.2709

Spahn, C., Kranz, S., Teismann, T., Forkmann, T., Schönfelder, A., Rath, D., Paashaus, L., Stengler, K., & Glaesmer, H. (2022). Gender-Specific Aspects of Suicide-Related Communication in a High Risk Sample of Psychiatric Inpatients. Journal of Men’s Health, 18(9), 188. https://doi.org/10.31083/j.jomh1809188

Spangenberg, L., Friedrich, M., Forkmann, T., Hallensleben, N., Schönfelder, A., Rath, D., Paashaus, L., Teismann, T., & Glaesmer, H. (2022). Phenotyping suicidal ideation and behavior: Comparing clinical characteristics and future suicide attempts between suicidal subtypes in two clinical samples. International Journal of Methods in Psychiatric Research, 32(1), e1940. https://doi.org/10.1002/mpr.1940

Teismann, T., Hilbert, K., & Forkmann, T. (2022). Prädiktion suizidalen Verhaltens: Von der klinischen Urteilsbildung zur künstlichen Intelligenz. Nervenheilkunde, 41(4), 253–257. https://doi.org/10.1055/a-1701-8272

Conrad, K., Teismann, T., Rath, D., & Forkmann, T. (2021). Ängste im Umgang mit suizidalen Patient/innen: Eine vergleichende Untersuchung von approbierten Psychotherapeut/innen und Psychotherapeut/innen in Ausbildung. Psychotherapie · Psychosomatik · Medizinische Psychologie, 71(1), 9–17. https://doi.org/10.1055/a-1153-9187

Forkmann, T., Glaesmer, H., Paashaus, L., Rath, D., Schönfelder, A., Juckel, G., Gauggel, S., Beginn-Göbel, U., & Teismann, T. (2021). Testing the Four Main Predictions of the Interpersonal-Psychological Theory of Suicidal Behavior in an Inpatient Sample Admitted Due to Severe Suicidality. Behavior Therapy, 52(3), 626–638. https://doi.org/10.1016/j.beth.2020.08.002

Höller, I., Stenzel, J.-S., Rath, D., & Forkmann, T. (2021). Listen to Your Heart–Ecological Momentary Assessment of Interoceptive Accuracy, Awareness and Sensibility: A Pilot Study. International Journal of Environmental Research and Public Health, 18(9), 4893. https://doi.org/10.3390/ijerph18094893

Paashaus, L., Forkmann, T., Glaesmer, H., Juckel, G., Rath, D., Schönfelder, A., & Teismann, T. (2021). From decision to action: Suicidal history and time between decision to die and actual suicide attempt. Clinical Psychology & Psychotherapy, 28(6), 1427–1434. https://doi.org/10.1002/cpp.2580

Rath, D., Teismann, T., Höller, I., Glaesmer, H., Paashaus, L., Schönfelder, A., Juckel, G., & Forkmann, T. (2021). Predicting suicidal ideation in a longitudinal high‐risk sample: Multilevel analyses and 12‐month trajectories. Journal of Clinical Psychology, 77(10), 2353–2369. https://doi.org/10.1002/jclp.23159

Rath, D., Teismann, T., Schmitz, F., Glaesmer, H., Hallensleben, N., Paashaus, L., Spangenberg, L., Schönfelder, A., Juckel, G., & Forkmann, T. (2021). Predicting suicidal behavior by implicit associations with death? Examination of the death IAT in two inpatient samples of differing suicide risk. Psychological Assessment, 33(4), 287–299. https://doi.org/10.1037/pas0000980

Schönfelder, A., Rath, D., Forkmann, T., Paashaus, L., Lucht, L., Teismann, T., Stengler, K., Juckel, G., & Glaesmer, H. (2021). Child abuse and suicidality in the context of the Interpersonal Psychological Theory of Suicide: A network analysis. British Journal of Clinical Psychology, 60(4), 425–442. https://doi.org/10.1111/bjc.12293

Schönfelder, A., Rath, D., Forkmann, T., Paashaus, L., Stengler, K., Teismann, T., Juckel, G., & Glaesmer, H. (2021). Is the relationship between child abuse and suicide attempts mediated by nonsuicidal self‐injury and pain tolerance? Clinical Psychology & Psychotherapy, 28(1), 189–199. https://doi.org/10.1002/cpp.2501

Teismann, T., Forkmann, T., & Glaesmer, H. (2021). Psychotherapie nach einem Suizidversuch. Nervenheilkunde, 40(9), 679–683. https://doi.org/10.1055/a-1406-9572

Teismann, T., Forkmann, T., Glaesmer, H., Juckel, G., & Cwik, J. C. (2021). Skala Suizidales Erleben und Verhalten (SSEV): Faktorstruktur und Psychometrische Eigenschaften. Diagnostica, 67(3), 115–125. https://doi.org/10.1026/0012-1924/a000269

Teismann, T., Forkmann, T., Michalak, J., & Brailovskaia, J. (2021). Repetitive negative thinking about suicide: Associations with lifetime suicide attempts. Clinical Psychology in Europe, 3(3), e5579. https://doi.org/10.32872/cpe.5579

Teismann, T., Forkmann, T., Sander, L. B., & Glaesmer, H. (2021). Umgang mit suizidalem Erleben und Verhalten in Forschungsprojekten. Psychotherapie · Psychosomatik · Medizinische Psychologie, 71(9/10), 423–424. https://doi.org/10.1055/a-1542-9753

Cwik, J. C., Forkmann, T., Glaesmer, H., Paashaus, L., Schönfelder, A., Rath, D., Prinz, S., Juckel, G., & Teismann, T. (2020). Validation of the German capability for suicide questionnaire (GCSQ) in a high-risk sample of suicidal inpatients. BMC Psychiatry, 20(1), 412. https://doi.org/10.1186/s12888-020-02812-9

Forkmann, T., Glaesmer, H., Paashaus, L., Rath, D., Schönfelder, A., Stengler, K., Juckel, G., Assion, H.-J., & Teismann, T. (2020). Interpersonal theory of suicide: Prospective examination. BJPsych Open, 6(5), e113. https://doi.org/10.1192/bjo.2020.93

Glaesmer, H., Spangenberg, L., Forkmann, T., & Teismann, T. (2020). Suizidalität: Theoretische Konzepte, Risikoabschätzung und Behandlungsansätze. Psychotherapie · Psychosomatik · Medizinische Psychologie, 70(6), 252–261. https://doi.org/10.1055/a-1112-7365

Hadzic, A., Spangenberg, L., Hallensleben, N., Forkmann, T., Rath, D., Strauß, M., Kersting, A., & Glaesmer, H. (2020). The association of trait impulsivity and suicidal ideation and its fluctuation in the context of the Interpersonal Theory of Suicide. Comprehensive Psychiatry, 98, 152158. https://doi.org/10.1016/j.comppsych.2019.152158

Hallensleben, N., Glaesmer, H., Forkmann, T., Rath, D., Strauss, M., Kersting, A., & Spangenberg, L. (2020). How Is the Presence of Company Related to Thwarted Belongingness in Real Time? Taking a Closer Look at the Conceptualization of the Construct of the Interpersonal Theory of Suicide. International Journal of Environmental Research and Public Health, 17(13), 4873. https://doi.org/10.3390/ijerph17134873

Höller, I., Teismann, T., Cwik, J. C., Glaesmer, H., Spangenberg, L., Hallensleben, N., Paashaus, L., Rath, D., Schönfelder, A., Juckel, G., & Forkmann, T. (2020). Short defeat and entrapment scale: A psychometric investigation in three German samples. Comprehensive Psychiatry, 98, 152160. https://doi.org/10.1016/j.comppsych.2020.152160

Lucht, L., Höller, I., Forkmann, T., Teismann, T., Schönfelder, A., Rath, D., Paashaus, L., Stengler, K., Juckel, G., & Glaesmer, H. (2020). Validation of the motivational phase of the integrated motivational–volitional model of suicidal behavior in a German high-risk sample. Journal of Affective Disorders, 274, 871–879. https://doi.org/10.1016/j.jad.2020.05.079

Paashaus, L., Forkmann, T., Glaesmer, H., Juckel, G., Rath, D., Schönfelder, A., & Teismann, T. (2020). Pain persistence and lethality of suicide attempts. Clinical Psychology & Psychotherapy, 27(4), 542–547. https://doi.org/10.1002/cpp.2438

Scharm, H., Kallinger, S. M., Eder, S., Böcker, M., Forkmann, T., & Baumeister, H. (2020). Development of Rasch-based short screenings for the assessment of treatment motivation in patients with cardiovascular diseases. Disability and Rehabilitation, 42(17), 2519–2529. https://doi.org/10.1080/09638288.2018.1561959

Spangenberg, L., Teismann, T., Forkmann, T., Rath, D., Schönfelder, A., Paashaus, L., Juckel, G., Stengler, K., & Glaesmer, H. (2020). Psychometrische Eigenschaften und Faktorstruktur der deutschen Version der Beck-Suizidgedanken-Skala (BSS): Validierung an einer Stichprobe psychiatrischer Patienten. Psychotherapie · Psychosomatik · Medizinische Psychologie, 70(9/10), 405–411. https://doi.org/10.1055/a-1119-6884

Stenzel, J.-S., Höller, I., Rath, D., Hallensleben, N., Spangenberg, L., Glaesmer, H., & Forkmann, T. (2020). Do Feelings of Defeat and Entrapment Change over Time? An Investigation of the Integrated Motivational – Volitional Model of Suicidal Behaviour Using Ecological Momentary Assessments. International Journal of Environmental Research and Public Health, 17(13), 4685. https://doi.org/10.3390/ijerph17134685

Upegui-Arango, L. D., Forkmann, T., Nielsen, T., Hallensleben, N., Glaesmer, H., Spangenberg, L., Teismann, T., Juckel, G., & Böcker, M. (2020). Psychometric evaluation of the Interpersonal Needs Questionnaire (INQ) using item analysis according to the Rasch model. PLOS ONE, 15(8), e0232030. https://doi.org/10.1371/journal.pone.0232030

Wannemüller, A., Forkmann, T., Glaesmer, H., Juckel, G., Paashaus, L., Rath, D., Schönfelder, A., Moser, D., Kumsta, R., & Teismann, T. (2020). The role of the 5‐HTTLPR polymorphism in acquired capability for suicide. Suicide and Life-Threatening Behavior, 50(6), 1121–1126. https://doi.org/10.1111/sltb.12660

Brailovskaia, J., Forkmann, T., Glaesmer, H., Paashaus, L., Rath, D., Schönfelder, A., Juckel, G., & Teismann, T. (2019). Positive mental health moderates the association between suicide ideation and suicide attempts. Journal of Affective Disorders, 245, 246–249. https://doi.org/10.1016/j.jad.2018.11.005

Forkmann, T., Volz-Sidiropoulou, E., Helbing, T., Drüke, B., Mainz, V., Rath, D., Gauggel, S., & Teismann, T. (2019). Sense it and use it: Interoceptive accuracy and sensibility in suicide ideators. BMC Psychiatry, 19(1), 334. https://doi.org/10.1186/s12888-019-2322-1

Hallensleben, N., Glaesmer, H., Forkmann, T., Rath, D., Strauss, M., Kersting, A., & Spangenberg, L. (2019). Predicting suicidal ideation by interpersonal variables, hopelessness and depression in real-time. An ecological momentary assessment study in psychiatric inpatients with depression. European Psychiatry, 56(1), 43–50. https://doi.org/10.1016/j.eurpsy.2018.11.003

Kallinger, S. M., Scharm, H., Böcker, M., Forkmann, T., & Baumeister, H. (2019). Calibration of an item bank in 474 orthopedic patients using Rasch analysis for computer-adaptive assessment of anxiety. Clinical Rehabilitation, 33(9), 1468–1478. https://doi.org/10.1177/0269215519846225

Paashaus, L., Forkmann, T., Glaesmer, H., Juckel, G., Rath, D., Schönfelder, A., Engel, P., & Teismann, T. (2019). Do suicide attempters and suicide ideators differ in capability for suicide? Psychiatry Research, 275, 304–309. https://doi.org/10.1016/j.psychres.2019.03.038

Rath, D., De Beurs, D., Hallensleben, N., Spangenberg, L., Glaesmer, H., & Forkmann, T. (2019). Modelling suicide ideation from beep to beep: Application of network analysis to ecological momentary assessment data. Internet Interventions, 18, 100292. https://doi.org/10.1016/j.invent.2019.100292

Schönfelder, A., Hallensleben, N., Spangenberg, L., Forkmann, T., Rath, D., & Glaesmer, H. (2019). The role of childhood abuse for suicidality in the context of the interpersonal theory of suicide: An investigation in German psychiatric inpatients with depression. Journal of Affective Disorders, 245, 788–797. https://doi.org/10.1016/j.jad.2018.11.063

Spangenberg, L., Glaesmer, H., Hallensleben, N., Rath, D., & Forkmann, T. (2019). (In)stability of Capability for Suicide in Psychiatric Inpatients: Longitudinal Assessment Using Ecological Momentary Assessments. Suicide and Life-Threatening Behavior, 49(6), 1560–1572. https://doi.org/10.1111/sltb.12547

Spangenberg, L., Glaesmer, H., Hallensleben, N., Schönfelder, A., Rath, D., Forkmann, T., & Teismann, T. (2019). Psychometric properties of the German version of the suicide cognitions scale in two clinical samples. Psychiatry Research, 274, 254–262. https://doi.org/10.1016/j.psychres.2019.02.047

Teismann, T., Forkmann, T., & Glaesmer, H. (2019). Risikoabschätzung bei suizidalen Patienten: Geht das überhaupt? Verhaltenstherapie, 29(2), 80–84. https://doi.org/10.1159/000493887

Adolph, D., Teismann, T., Forkmann, T., Wannemüller, A., & Margraf, J. (2018). High frequency heart rate variability: Evidence for a transdiagnostic association with suicide ideation. Biological Psychology, 138, 165–171. https://doi.org/10.1016/j.biopsycho.2018.09.006

Forkmann, T., Spangenberg, L., Rath, D., Hallensleben, N., Hegerl, U., Kersting, A., & Glaesmer, H. (2018). Assessing Suicidality in Real Time: A Psychometric Evaluation of Self-Report Items for the Assessment of Suicidal Ideation and Its Proximal Risk Factors Using Ecological Momentary Assessments. Journal of Abnormal Psychology, 127, 758–769. https://doi.org/10.1037/abn0000381

Forkmann, T., Stenzel, J.-S., Rath, D., Glaesmer, H., & Teismann, T. (2018). „Vom Leben geschlagen“ – Validierung der deutschen Version der Defeat Scale (DS-d). Psychotherapie · Psychosomatik · Medizinische Psychologie, 68(7), 300–308. https://doi.org/10.1055/s-0043-107027

Forkmann, T., Teismann, T., Stenzel, J.-S., Glaesmer, H., & de Beurs, D. (2018). Defeat and entrapment: More than meets the eye? Applying network analysis to estimate dimensions of highly correlated constructs. BMC Medical Research Methodology, 18(1), 16. https://doi.org/10.1186/s12874-018-0470-5

Glaesmer, H., Kapusta, N., Teismann, T., Wagner, B., Hallensleben, N., Spangenberg, L., & Forkmann, T. (2018). Psychometrische Eigenschaften der deutschen Version des Suicide Behaviors Questionnaire Revised (SBQ-R). Psychotherapie · Psychosomatik · Medizinische Psychologie, 68(8), 346–352. https://doi.org/10.1055/s-0043-118335

Hallensleben, N., Spangenberg, L., Forkmann, T., Rath, D., Hegerl, U., Kersting, A., Kallert, T. W., & Glaesmer, H. (2018). Investigating the Dynamics of Suicidal Ideation: Preliminary Findings From a Study Using Ecological Momentary Assessments in Psychiatric Inpatients. Crisis, 39(1), 65–69. https://doi.org/10.1027/0227-5910/a000464

Meessen, J., Sütterlin, S., Gauggel, S., & Forkmann, T. (2018). Learning by heart—The relationship between resting vagal tone and metacognitive judgments: A pilot study. Cognitive Processing, 19(4), 557–561. https://doi.org/10.1007/s10339-018-0865-6

Rath, D., Hallensleben, N., Glaesmer, H., Spangenberg, L., Strauss, M., Kersting, A., & Forkmann, T. (2018). Implizite Assoziationen mit dem Tod: Erste Validierung einer deutschen Version des Impliziten Assoziationstests für Suizidalität (Suizid-IAT). Psychotherapie · Psychosomatik · Medizinische Psychologie, 68(3–4), 109–117. https://doi.org/10.1055/s-0043-105070

Siegmann, P., Teismann, T., Fritsch, N., Forkmann, T., Glaesmer, H., Zhang, X. C., Brailovskaia, J., & Margraf, J. (2018). Resilience to suicide ideation: A cross‐cultural test of the buffering hypothesis. Clinical Psychology & Psychotherapy, 25(1), e1–e9. https://doi.org/10.1002/cpp.2118

Teismann, T., Forkmann, T., Brailovskaia, J., Siegmann, P., Glaesmer, H., & Margraf, J. (2018). Positive mental health moderates the association between depression and suicide ideation: A longitudinal study. International Journal of Clinical and Health Psychology, 18(1), 1–7. https://doi.org/10.1016/j.ijchp.2017.08.001

Teismann, T., Glaesmer, H., Gysin-Maillart, A., & Forkmann, T. (2018). Nach einem Suizidversuch: Behandlungsnachfrage und psychotherapeutische Behandlungsoptionen. Psychotherapeutenjournal, (1), 4–10.

Abberger, B., Haschke, A., Tully, P. J., Forkmann, T., Berger, J., Wirtz, M. A., Bengel, J., & Baumeister, H. (2017). Development and validation of parallel short forms PaSA-cardio for the assessment of general anxiety in cardiovascular rehabilitation patients using Rasch analysis. Clinical Rehabilitation, 31(1), 104–114. https://doi.org/10.1177/0269215515627288

Cwik, J. C., Siegmann, P., Willutzki, U., Nyhuis, P., Wolter, M., Forkmann, T., Glaesmer, H., & Teismann, T. (2017). Brief reasons for living inventory: A psychometric investigation. BMC Psychiatry, 17(1), 358. https://doi.org/10.1186/s12888-017-1521-x

Forkmann, T., & Teismann, T. (2017). Entrapment, perceived burdensomeness and thwarted belongingness as predictors of suicide ideation. Psychiatry Research, 257, 84–86. https://doi.org/10.1016/j.psychres.2017.07.031

Glaesmer, H., Hallensleben, N., Forkmann, T., Spangenberg, L., Kapusta, N., & Teismann, T. (2017). Testing the main prediction of the Interpersonal Theory of Suicide in a representative sample of the German general population. Journal of Affective Disorders, 211, 150–152. https://doi.org/10.1016/j.jad.2017.01.010

Scherer, A., Böcker, M., Pawelzik, M., Gauggel, S., & Forkmann, T. (2017). Emotion suppression, not reappraisal, predicts psychotherapy outcome. Psychotherapy Research, 27(2), 143–153. https://doi.org/10.1080/10503307.2015.1080875

Teismann, T., & Forkmann, T. (2017). Rumination, entrapment and suicide ideation: A mediational model. Clinical Psychology & Psychotherapy, 24(1), 226–234. https://doi.org/10.1002/cpp.1999

Teismann, T., Glaesmer, H., von Brachel, R., Siegmann, P., & Forkmann, T. (2017). A Prospective Examination of Perceived Burdensomeness and Thwarted Belongingness As Risk Factors for Suicide Ideation In Adult Outpatients Receiving Cognitive-Behavioral Therapy. Journal of Clinical Psychology, 73(10), 1393–1402. https://doi.org/10.1002/jclp.22441

Teismann, T., Willutzki, U., Michalak, J., Siegmann, P., Nyhuis, P., Wolter, M., & Forkmann, T. (2017). Religious beliefs buffer the impact of depression on suicide ideation. Psychiatry Research, 257, 276–278. https://doi.org/10.1016/j.psychres.2017.07.060

Forkmann, T., Brakemeier, E.-L., Teismann, T., Schramm, E., & Michalak, J. (2016). The effects of Mindfulness-based Cognitive Therapy and Cognitive Behavioral Analysis System of Psychotherapy added to treatment as usual on suicidal ideation in chronic depression: Results of a randomized-clinical trial. Journal of Affective Disorders, 200, 51–57. https://doi.org/10.1016/j.jad.2016.01.047

Forkmann, T., Meessen, J., Teismann, T., Sütterlin, S., Gauggel, S., & Mainz, V. (2016). Resting vagal tone is negatively associated with suicide ideation. Journal of Affective Disorders, 194, 30–32. https://doi.org/10.1016/j.jad.2016.01.032

Forkmann, T., Scherer, A., Meessen, J., Michal, M., Schächinger, H., Vögele, C., & Schulz, A. (2016). Making sense of what you sense: Disentangling interoceptive awareness, sensibility and accuracy. International Journal of Psychophysiology, 109, 71–80. https://doi.org/10.1016/j.ijpsycho.2016.09.019

Hallensleben, N., Spangenberg, L., Kapusta, N. D., Forkmann, T., & Glaesmer, H. (2016). The German version of the Interpersonal Needs Questionnaire (INQ) – Dimensionality, psychometric properties and population-based norms. Journal of Affective Disorders, 195, 191–198. https://doi.org/10.1016/j.jad.2016.01.045

Hinz, A., Mehnert, A., Kocalevent, R.-D., Brähler, E., Forkmann, T., Singer, S., & Schulte, T. (2016). Assessment of depression severity with the PHQ-9 in cancer patients and in the general population. BMC Psychiatry, 16(1), 22. https://doi.org/10.1186/s12888-016-0728-6

Kessel, R., Gecht, J., Forkmann, T., Drüke, B., Gauggel, S., & Mainz, V. (2016). Exploring the relationship of decentering to health related concepts and cognitive and metacognitive processes in a student sample. BMC Psychology, 4(1), 11. https://doi.org/10.1186/s40359-016-0115-6

Mainz, V., Kessel, R., Gecht, J., & Forkmann, T. (2016). Affective and Cognitive Processes Underlying Decentering. British Journal of Medical and Health Research, 3(9), 101–123.

Meessen, J., Mainz, V., Gauggel, S., Volz-Sidiropoulou, E., Sütterlin, S., & Forkmann, T. (2016). The relationship between interoception and metacognition: A pilot study. Journal of Psychophysiology, 30(2), 76–86. https://doi.org/10.1027/0269-8803/a000157

Teismann, T., Forkmann, T., Glaesmer, H., Egeri, L., & Margraf, J. (2016). Remission of suicidal thoughts: Findings from a longitudinal epidemiological study. Journal of Affective Disorders, 190, 723–725. https://doi.org/10.1016/j.jad.2015.09.066

Teismann, T., Forkmann, T., Rath, D., Glaesmer, H., & Margraf, J. (2016). Perceived burdensomeness and suicide ideation in adult outpatients receiving exposure therapy for anxiety disorders. Behaviour Research and Therapy, 85, 1–5. https://doi.org/10.1016/j.brat.2016.07.011

Drüke, B., Weichert, L., Forkmann, T., Mainz, V., Gauggel, S., & Böcker, M. (2015). Neural correlates of positive and negative performance feedback in younger and older adults. Behavioral and Brain Functions, 11(1), 17. https://doi.org/10.1186/s12993-015-0062-z

Glaesmer, H., Forkmann, T., Dinkel, A., Wahl, I., Sattel, H., Huber, D., Spangenberg, L., Rabung, S., Andreas, S., Tritt, K., Franke, G., Rose, M., & Löwe, B. (2015). Kriterienkatalog zur Beurteilung psychodiagnostischer Selbstbeurteilungsinstrumente – Empfehlung des Deutschen Kollegiums für Psychosomatische Medizin (DKPM). Psychotherapie · Psychosomatik · Medizinische Psychologie, 65(07), 246–254. https://doi.org/10.1055/s-0034-1398685

Spangenberg, L., Forkmann, T., & Glaesmer, H. (2015). Investigating dynamics and predictors of suicidal behaviors using ambulatory assessment. Neuropsychiatrie, 29(3), 139–143. https://doi.org/10.1007/s40211-015-0142-1

Spangenberg, L., Glaesmer, H., Böcker, M., & Forkmann, T. (2015). Differences in Patient Health Questionnaire and Aachen Depression Item Bank scores between tablet versus paper-and-pencil administration. Quality of Life Research, 24(12), 3023–3032. https://doi.org/10.1007/s11136-015-1040-5

Teismann, T., Forkmann, T., Wachtel, S., Edel, M.-A., Nyhuis, P., & Glaesmer, H. (2015). The german version of the painful and provocative events scale: A psychometric investigation. Psychiatry Research, 226(1), 264–272. https://doi.org/10.1016/j.psychres.2014.12.060

Forkmann, T., Scherer, A., Böcker, M., Pawelzik, M., Gauggel, S., & Glaesmer, H. (2014). The relation of cognitive reappraisal and expressive suppression to suicidal ideation and suicidal desire. Suicide and Life-Threatening Behavior, 44(5), 524–536. https://doi.org/10.1111/sltb.12076

Forkmann, T., Scherer, A., Pawelzik, M., Mainz, V., Drueke, B., Böcker, M., & Gauggel, S. (2014). Does cognitive behavior therapy alter emotion regulation in inpatients with a depressive disorder? Psychology Research and Behavior Management, 147–153. https://doi.org/10.2147/PRBM.S59421

Forkmann, T., Wichers, M., Geschwind, N., Peeters, F., Van Os, J., Mainz, V., & Collip, D. (2014). Effects of mindfulness-based cognitive therapy on self-reported suicidal ideation: Results from a randomised controlled trial in patients with residual depressive symptoms. Comprehensive Psychiatry, 55(8), 1883–1890. https://doi.org/10.1016/j.comppsych.2014.08.043

Gecht, J., Kessel, R., Forkmann, T., Gauggel, S., Drüke, B., Scherer, A., & Mainz, V. (2014). A mediation model of mindfulness and decentering: Sequential psychological constructs or one and the same? BMC Psychology, 2(1), 18. https://doi.org/10.1186/2050-7283-2-18

Gecht, J., Kessel, R., Mainz, V., Gauggel, S., Drüke, B., Scherer, A., & Forkmann, T. (2014). Measuring decentering in self-reports: Psychometric properties of the Experiences Questionnaire in a German sample. Psychotherapy Research, 24(1), 67–79. https://doi.org/10.1080/10503307.2013.821635

Glaesmer, H., Spangenberg, L., Scherer, A., & Forkmann, T. (2014). Die Erfassung von Suizidwünschen: Erste psychometrische Befunde zur deutschen Version des Interpersonal Needs Questionnaire (INQ). Psychiatrische Praxis, 41(5), 250–256. https://doi.org/10.1055/s-0033-1343321

Kessel, R., Gecht, J., Forkmann, T., Drüke, B., Gauggel, S., & Mainz, V. (2014). Metacognitive monitoring of attention performance and its influencing factors. Psychological Research, 78(4), 597–607. https://doi.org/10.1007/s00426-013-0511-y

Krabbe, J., & Forkmann, T. (2014). Frequency vs. Intensity: Framing effects on patients’ use of verbal rating scale anchors. Comprehensive Psychiatry, 55(8), 1928–1936. https://doi.org/10.1016/j.comppsych.2014.06.010

Scholz, M., Müller, E., Böcker, M., Forkmann, T., & Wirtz, M. A. (2014). Konfirmatorische Prüfung der dimensionalen Struktur des Oswestry Disability Index, des SF-12 und der HADS-D bei Rehabilitanden mit muskuloskelettalen Erkrankungen. Die Rehabilitation, 53(2), 118–123. https://doi.org/10.1055/s-0033-1347229

Scholz, M., Müller, E., Kröhne, U., Böcker, M., Forkmann, T., & Wirtz, M. A. (2014). Validierung der computeradaptiven Assessmentprozedur RehaCAT hinsichtlich funktionaler und psychischer Belastungen bei Rehabilitanden mit muskuloskelettalen Erkrankungen. Die Rehabilitation, 53(5), 290–296. https://doi.org/10.1055/s-0034-1384595

Spangenberg, L., Forkmann, T., & Glaesmer, H. (2014). “Mit Computern kenne ich mich eigentlich nicht aus …”: Benutzerfreundlichkeit und Akzeptanz tabletbasierter Depressionsdiagnostik im Vergleich mit Papier-Bleistift-Erhebungen in einer Stichprobe ab 60-jähriger Hausarzt-Patienten. Nervenheilkunde, 33(9), 631–637. https://doi.org/10.1055/s-0038-1627718

Spangenberg, L., Glaesmer, H., Scherer, A., Gecht, J., Barke, A., Mainz, V., & Forkmann, T. (2014). Furchtlosigkeit vor dem Tod und Suizidalität: Psychometrische Eigenschaften der deutschen Version der revidierten Acquired Capability for Suicide Scale (ACSS-FAD). Psychiatrische Praxis, 43(2), 95–100. https://doi.org/10.1055/s-0034-1387375

Boos, M., Forkmann, T., & Belz, M. (2013). Was bewirkt kombinierte Gewaltprävention an Schulen? Polizei & Wissenschaft, 1, 2–11.

Forkmann, T., & Gauggel, S. (2013). Freier Zugang zu psychodiagnostischen Instrumenten! Psychiatrische Praxis, 40(2), 102–103. https://doi.org/10.1055/s-0032-1321470

Forkmann, T., Gauggel, S., Spangenberg, L., Brähler, E., & Glaesmer, H. (2013). Dimensional assessment of depressive severity in the elderly general population: Psychometric evaluation of the PHQ-9 using Rasch Analysis. Journal of Affective Disorders, 148(2), 323–330. https://doi.org/10.1016/j.jad.2012.12.019

Forkmann, T., Kröhne, U., Wirtz, M., Norra, C., Baumeister, H., Gauggel, S., Elhan, A. H., Tennant, A., & Böcker, M. (2013). Adaptive screening for depression – Recalibration of an item bank for the assessment of depression in persons with mental and somatic diseases and evaluation in a simulated computer-adaptive test environment. Journal of Psychosomatic Research, 75(5), 437–443. https://doi.org/10.1016/j.jpsychores.2013.08.022

Scherer, A., Eberle, N., Böcker, M., Vögele, C., Gauggel, S., & Forkmann, T. (2013). The negative affect repair questionnaire: Factor analysis and psychometric evaluation in three samples. BMC Psychiatry, 13(1), Article 16. https://doi.org/10.1186/1471-244X-13-16

Vehren, T., Böcker, M., Norra, C., Wirtz, M., Gauggel, S., & Forkmann, T. (2013). Cross-sectional validation of the Rasch-based Depression Screening (DESC) in a mixed sample of patients with mental and somatic diseases. Comprehensive Psychiatry, 54(7), 1082–1089. https://doi.org/10.1016/j.comppsych.2013.05.001

Forkmann, T., Böcker, M., Wirtz, M. A., Norra, C., & Gauggel, S. (2012). Entwicklung, Validierung und Normierung des Rasch-basierten Depressionsscreenings: Eine Übersicht. Zeitschrift für Klinische Psychologie und Psychotherapie, 41(1), 19–29. https://doi.org/10.1026/1616-3443/a000116

Forkmann, T., Brähler, E., Gauggel, S., & Glaesmer, H. (2012). Prevalence of suicidal ideation and related risk factors in the German general population. The Journal of Nervous and Mental Disease, 200(5), 401–405. https://doi.org/10.1097/NMD.0b013e31825322cf

Krabbe, J., & Forkmann, T. (2012). Frequency vs. intensity: Which should be used as anchors for self-report instruments? Health and Quality of Life Outcomes, 10(1), Article 107. https://doi.org/10.1186/1477-7525-10-107

Mainz, V., Drüke, B., Böcker, M., Kessel, R., Gauggel, S., & Forkmann, T. (2012). Influence of cue exposure on inhibitory control and brain activation in patients with alcohol dependence. Frontiers in Human Neuroscience, 6, Article 92. https://doi.org/10.3389/fnhum.2012.00092

Norra, C., Kummer, J., Böcker, M., Skobel, E., Schauerte, P., Wirtz, M. A., Gauggel, S., & Forkmann, T. (2012). Poor sleep quality is associated with depressive symptoms in patients with heart disease. International Journal of Behavioral Medicine, 19(4), 526–534. https://doi.org/10.1007/s12529-011-9205-2

Scherer, A., Forkmann, T., Sudmann, S., & Gauggel, S. (2012). Student Evaluations of the Courses in Medical Psychology at the Medical Department of the RWTH Aachen: A Three-Year Report. Open Journal of Medical Psychology, 1(4), 63–67. https://doi.org/10.4236/ojmp.2012.14010

Forkmann, T. (2011). Was ist Adaptives Testen? Psychotherapie - Psychosomatik - Medizinische Psychologie, 61(3/04), 182–183. https://doi.org/10.1055/s-0030-1265954

Forkmann, T., Eberle, N., Böcker, M., Wirtz, M. A., Norra, C., & Gauggel, S. (2011). Does clinical experience or professional training have an impact on what symptoms are thought to be important features of depression? International Journal of Social Psychiatry, 57(3), 312–321. https://doi.org/10.1177/0020764009358259

Forkmann, T., Norra, C., Wirtz, M. A., Vehren, T., Volz-Sidiropoulou, E., Westhofen, M., Gauggel, S., & Böcker, M. (2011). Prevalence and psychopathological characteristics of depression in consecutive otorhinolaryngologic inpatients. BMC Ear, Nose and Throat Disorders, 11(1), Article 7. https://doi.org/10.1186/1472-6815-11-7

Forkmann, T., Scherer, A., Boecker, M., Pawelzik, M., Jostes, R., & Gauggel, S. (2011). The clinical global impression scale and the influence of patient or staff perspective on outcome. BMC Psychiatry, 11(1), 83. https://doi.org/10.1186/1471-244X-11-83

Frey, C., Zwingmann, C., Böcker, M., Forkmann, T., Kröhne, U., Müller, E., & Wirtz, M. A. (2011). Adaptives Testen in der Rehabilitation – ein Weg zur ökonomischen Erhebung von Patientenmerkmalen. Rehabilitation, 50(3), 195–203. https://doi.org/10.1055/s-0031-1271816

Löwe, B., Rose, M., Wahl, I., Andreas, S., Dinkel, A., Forkmann, T., Franke, G., Huber, D., Rabung, S., & Sattel, H. (2011). Psychometrie und Psychodiagnostik in Psychosomatik, Psychotherapie und Medizinischer Psychologie: Bericht zum zweiten Arbeitstreffen der DKPM-Arbeitsgruppe „Psychometrie und Psychodiagnostik“. Psychotherapie - Psychosomatik - Medizinische Psychologie, 61(7), 334–336. https://doi.org/10.1055/s-0031-1276853

Spangenberg, L., Forkmann, T., Brähler, E., & Glaesmer, H. (2011). The association of depression and multimorbidity in the elderly: Implications for the assessment of depression. Psychogeriatrics: The Official Journal of the Japanese Psychogeriatric Society, 11(4), 227–234. https://doi.org/10.1111/j.1479-8301.2011.00375.x

Wirtz, M. A., Böcker, M., Forkmann, T., & Neumann, M. (2011). Evaluation of the „Consultation and Relational Empathy“ (CARE) measure by means of Rasch-analysis at the example of cancer patients. Patient Education and Counseling, 82(3), 298–306. https://doi.org/10.1016/j.pec.2010.12.009

Forkmann, T., Böcker, M., Norra, C., Wirtz, M. A., Frey, C., & Gauggel, S. (2010). Adaptives Testen in der Psychotherapie: Das Rasch-basierte Adaptive Depressionsscreening (A-DESC). Zeitschrift für Klinische Diagnostik und Evaluation, 3(1), 59–75.

Forkmann, T., Böcker, M., Wirtz, M. A., Glaesmer, H., Brähler, E., Norra, C., & Gauggel, S. (2010). Validation of the Rasch-based Depression Screening in a large scale German general population sample. Health and Quality of Life Outcomes, 8(1), Article 105. https://doi.org/10.1186/1477-7525-8-105

Forkmann, T., Norra, C., Wirtz, M., Gauggel, S., & Böcker, M. (2010). Psychometric evaluation of the Rasch-based depression screening in patients with neurologic disorders. Archives of Physical Medicine and Rehabilitation, 91(8), 1188–1193. https://doi.org/10.1016/j.apmr.2010.04.021

Gauggel, S., Heusinger, A., Forkmann, T., Böcker, M., Lindenmeyer, J., Cox, W. M., & Städtgen, M. (2010). Effects of alcohol cue exposure on response inhibition in detoxified alcohol-dependent patients. Alcoholism: Clinical and Experimental Research, 34(9), 1584–1589. https://doi.org/10.1111/j.1530-0277.2010.01243.x

Volz-Sidiropoulou, E., Poll, E., Forkmann, T., & Gauggel, S. (2010). Erweiterte Altersnormen zum Verbalen Lern- und Merkfähigkeitstest (VLMT). Klinische Diagnostik und Evaluation, 3(3), 226–243.

Forkmann, T., Böcker, M., Norra, C., Eberle, N., Kircher, T., Schauerte, P., Mischke, K., Westhofen, M., Gauggel, S., & Wirtz, M. A. (2009). Development of an item bank for the assessment of depression in persons with mental illnesses and physical diseases using Rasch analysis. Rehabilitation Psychology, 54(2), 186–197. https://doi.org/10.1037/a0015612

Forkmann, T., Böcker, M., Wirtz, M. A., Eberle, N., Westhofen, M., Schauerte, P., Mischke, K., Kircher, T., Gauggel, S., & Norra, C. (2009). Development and validation of the Rasch-based depression screening (DESC) using Rasch analysis and structural equation modelling. Journal of Behavior Therapy and Experimental Psychiatry, 40(3), 468–478. https://doi.org/10.1016/j.jbtep.2009.06.003

Forkmann, T., Heins, M., Bruns, T., Paulus, W., & Kröner-Herwig, B. (2009). The second exteroceptive suppression is affected by psychophysiological factors. Journal of Psychosomatic Research, 66(6), 521–529. https://doi.org/10.1016/j.jpsychores.2008.12.008

Forkmann, T., Vehren, T., Böcker, M., Norra, C., Wirtz, M. A., & Gauggel, S. (2009). Sensitivity and specificity of the Beck Depression Inventory in cardiologic inpatients: How useful is the conventional cut-off score? Journal of Psychosomatic Research, 67(4), 347–352. https://doi.org/10.1016/j.jpsychores.2009.04.003

Forkmann, T. (2013a). Psychometrikon. In M. A. Wirtz (Hrsg.), Dorsch Psychologisches Wörterbuch (16. Aufl., S. 1250). Hogrefe.

Forkmann, T. (2013b). Rasch-basiertes Depressionsscreening (DESC). In M. A. Wirtz (Hrsg.), Dorsch Psychologisches Wörterbuch (16. Aufl., S. 1285). Hogrefe.

Forkmann, T. (2015a). Psychometrikon. In F. Petermann, G. Gründer, M. A. Wirtz, & J. Strohmer (Hrsg.), Dorsch – Lexikon der Psychotherapie und Psychopharmakotherapie (S. 665). Hogrefe.

Forkmann, T. (2015b). Rasch-basiertes Depressionsscreening (DESC). In F. Petermann, G. Gründer, M. A. Wirtz, & J. Strohmer (Hrsg.), Dorsch – Lexikon der Psychotherapie und Psychopharmakotherapie (S. 696). Hogrefe.

Forkmann, T., Teismann, T., & Glaesmer, H. (2016). Diagnostik von Suizidalität (1. Aufl., Bd. 14). Hogrefe. https://doi.org/10.1026/02639-000

Forkmann, T., Teismann, T., & Michalak, J. (2016). Mindfulness-based cognitive therapy for patients with suicidal ideation and behavior. In S. J. Eisendrath (Hrsg.), Mindfulness-based cognitive therapy: Innovative applications (S. 193–201). Springer. https://doi.org/10.1007/978-3-319-29866-5_16

Teismann, T., Baston, R., & Forkmann, T. (2025). Psychological Perspectives on Suicidal Ambivalence. In R. Baston & M. Weichold (Hrsg.), Exploring Suicidal Ambivalence: Philosophical and Psychological Perspectives (S. 13–26). Routledge. https://doi.org/10.4324/9781003616221-3

Teismann, T., Britton, P. C., & Forkmann, T. (2025). The Ambivalence Model of Suicidality. In R. Baston & M. Weichold (Hrsg.), Exploring Suicidal Ambivalence: Philosophical and Psychological Perspectives (S. 90–103). Routledge. https://doi.org/10.4324/9781003616221-8

Wirtz, M. A., Frey, C., Prinz, E., Forkmann, T., & Böcker, M. (2009). Adaptives Testen. In U. Egner, E. Grosch, H. Klosterhuis, H.-G. Verhorst, & M. Zellner (Hrsg.), Ergebnisqualität in der medizinischen Rehabilitation (S. 137–162). Deutsche Rentenversicherung Bund.

Forkmann, T., Böcker, M., Wirtz, M. A., Gauggel, S., & Norra, C. (2011). Raschbasiertes Depressionsscreening, Form I und II [Testverfahren]. Psychometrikon. https://doi.org/10.6099/1000057

Forkmann, T., & Glaesmer, H. (2013). Die deutsche Version des Interpersonal Needs Questionnaire [Testverfahren]. Psychometrikon. https://doi.org/10.6099/1000087

Scherer, A., Gauggel, S., & Forkmann, T. (2011). Negative Affect Repair Questionnaire [Testverfahren]. Psychometrikon. https://doi.org/10.6099/1000055

Spangenberg, L., Glaesmer, H., Scherer, A., Gecht, J., Barke, A., Mainz, V., & Forkmann, T. (2014). Revidierte Acquired Capability for Suicide Scale – Fearlessness about Death [Testverfahren]. Psychometrikon. https://doi.org/10.6099/1000148

Sudmann, S., Rath, D., Forkmann, T., Scherer, A., & Gauggel, S. (2014). Lern- und Leistungsmotivation im Studium [Testverfahren]. Psychometrikon. https://doi.org/10.6099/1000138