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Daniel Klein, Ph.D.

State University of New York at Buffalo (1983)
Distinguished Professor, Clinical Psychology


Office: Psychology A-338
Phone: (631) 632-7859

Visit Lab Website

Visit Temperament Study Website

Dr. Klein plans to admit a new graduate student pending approval of funding

Research Interests:

Dr. Klein is interested in developmental psychopathology and adult psychopathology, particularly mood disorders in children, adolescents, and adults. His research explores the intergenerational transmission of depression; the roles of temperament and emotional reactivity, and early adversity in the development and course of mood disorders; the long-term course and continuity of mood disorders; the classification of mood disorders; comorbidity between depression and other disorders; and the psychotherapeutic and psychopharmacological treatment of depressive disorders.

Current Research:  

Dr. Klein is currently directing a longitudinal study of the role of early temperament and emotional style in the development of later mood and anxiety disorders in a large community sample of children (the Stony Brook Temperament Study). The children were assessed at ages 3, 6, 9, 12, and 15; the age 18 assessment is currently underway. The study uses multiple measurement strategies to assess potential risk, protective, mediating, and moderating factors in multiple domains, including child emotional reactivity and regulation, psychopathology, psychophysiological and behavioral measures of processing of emotional information, polygenic risk scores, stress and pubertal hormones, parenting, environmental and family stress, stressful life events, and parental personality and psychopathology. In addition, resting state and task-related functional magnetic resonance imaging (fMRI) measures were collected on a subset of the larger sample. Together with Dr. Roman Kotov (Psychiatry), Dr. Klein is also directing a longitudinal study of a large sample of early adolescent girls who have been followed on six occasions to age 20 (the Adolescent Development of Emotions and Personality Traits study). This project also seeks to identify antecedents of, and pathways to, depressive disorders, and uses many of the same measures as the Stony Brook Temperament Study.

Publications in Edited Journals:  Fall 2018-Fall 2021

O’Leary, K. D. & Solano, I. (2018).  Relationship discord, intimate partner physical aggression, and externalizing problems of children (pp 291-306).   In Lochman, J. E. & Matthys, W. (Eds.),   The Wiley Handbook of Disruptive & Impulse Disorders.  New York: Wiley. 

Bannon, S., Barle, N., Menella, M., & O’Leary, K. D. (2018). Parental conflict, and college student functioning: Impact of child involvement in conflict.  Journal of Divorce and Remarriage, 59, 157-174.

O’Leary, K. D. & Salis, K. D. (2018). Violence in couples and families. In Lebow, J., Chambers, A., & Breunlin, D. (Eds.),  Encyclopedia of Couple and Family Therapy. Springer: New York.

Cascardi, M., Kraus, A., O’Leary, K. D., Loatman, K. L., Sargent, K., Grych, J. & Jouriles, E. N. (2018). The Bystander Behavior ( For Friends) Scale: Factor Structure and correlation with prior victimization.  Journal of Interpersonal Violence, 1-24.

Jose, A., Grana. J. L., & O’Leary, K. D.  (2018). Psychopathological factors and perpetration of intimate  partner aggression: A multivariate model.  Journal of Interpersonal Violence, 1-21.

Cucci, G., O’Leary, K. D., Olivari, M. G., Bonanomi, A. & Confaloneri, E.  (2019). Adolescent dating violence perpetration, emotion dysregulation, and parenting styles.  Journal of Family Psychology, 33, (1), 12-22.

Cantos, A, Kosson, D. Goldstein, D & O’Leary, K.D. (2019). Treatment impact on recidivism of family only vs. generally violent partner violence perpetrators.  International Journal of Clinical and Health Psychology, 19, 171-180.

Weber, E., Taylor, A.R., Cantos, A. L., Amado, B., & O’Leary, K.D. (2019) Exploring typology categorizations of male perpetrators: A methodology study.  The European Journal of Psychology Applied to Legal Context, 11, #2, 93-97.

Redondo, N.R. Cantos, A. L. Grana, J.L, Munoz-Rivas, M., & O’Leary K.D. (2019). Treatment-induced changes in under-controlled and overcontrolled anger subtypes of perpetrators of intimate partner violence and five-year recidivism.  Criminal Justice and Behavior, 46, #12,1700-1718.

Solano, I., Eaton, N. R. & O’Leary, K. D. (2020).  Pornography consumption, modality, and function in a large internet sample.  Journal of Sex Research, 57,#1, 92-103.

Jouriles, E. N., Krauss, A., Sargent, K. S., Grych, J. H., Cascardi, M., O'Leary, K. D., Murphy, C., Nguyen, J., McDonald, R., & Rosenfield, D. (2020). College students’ feelings of campus connectedness, party safety behavior and intervening to prevent sexual assault and intimate partner violence.   Psychology of Violence, 10(5), 542–551

Ontiveros, G., Cantos, A., Chen, P., Charak, R., & O’Leary, K.D. (2020). Is all dating violence equal? Gender and severity differences in predictors of perpetration.   Behav. Sci.10, 118

Bannon, S., Kehoe, C., Taggart, T, & O’Leary, K. D. (2020). Collaborative communication efficiency is linked to relationship satisfaction in dating couples.  Personal Relationships, 27, #2, 385-400.  

Cucci, G., O’Leary, K. D., Olivari, M. G., & Confalonieri, E.  (2020).  Prevalence, gender, and age differences of dating aggression among Italian adolescents.  Europe’s Journal of Psychology, 16 (4), 659-675. 

Bannon, S. M., Greenberg, J., Goldson, J., O’Leary, K. D., & Vranceanu (2020). A social blow: The role of interpersonal relationships in mild traumatic brain injury (mTBI). Psychosomatics, 61, #5, 518-526.

O’Leary, K. D. & Jouriles, E. N. (2021). Partner physical aggression and risk for physical child abuse. Family Court Review, 59, #2, 324-335.

Perry, N. S.,   Sullivan, T. J., Leo, K. O., Huebner, D. M., O’Leary, K. D., & Baucom, B. R. W. (2021). Using web-based technologies to increase reach, inclusion, and generalizability in behavioral observation research.  Journal of Family Psychology, no pagination as yet.

Taylor, A. R., Cantos, A., O’Leary, K. D. & Kessler, K. (2021). Stability of the severity of intimate partner violence, Journal of Interpersonal Violence, 36, #1, 942-959.

O’Leary, K. D. & Durkin, J. M. (2021, April). Coping with Corona as a COVID-19 Heath Care Provider and Parent: An  Ethical Issue with Legal Ramifications, Family News and Views, Spring Edition, Association of Family and Conciliation Courts, NY.

Current Research Support:

National Institute of Mental Health (RO1 MH 069942), "Temperamental emotionality in preschoolers and depression risk."
2004 - 2024. $7,289,330 (direct costs)
Principal Investigator (Co-Is: Gabrielle Carlson, Greg Hajcak, Joanne Davila, Thomas Olino)  

National Institute of Mental Health (R56 MH117116), “Gene expression and vulnerability to depression." 
2018-2020.  $940,865 (direct costs)
Multiple Principal Investigator with Roman Kotov

National Institute of Mental Health (RO1 MH118245 2019-2023), “Biopsychosocial mechanisms underlying internalizing psychopathology in a prospective population-based cohort of sexual minority young adults”.
2019-2023.  $113,180 (subcontract direct costs)
PI, subcontract, (PIs: Richard Branstrom, Mark Hatenbuehler, John Pachankis)

National Institute of Mental Health (RO1 MH 097767), “Trajectories of reward sensitivity and depression across adolescence”.
2018-2022. $2,588,487 (direct costs)
Co-Investigator (PI: Brady Nelson) 

National Institute of Occupational Safety and Health (U02 OH011321), “Personality-informed care model for 9/11-related comorbid conditions.”
2016-2021. $2,283,267 (direct costs)
Co-Investigator (PI: Roman Kotov) 

National Institute of Child Health and Development (R21 HD093912), “Using adolescent nonverbal behavior to predict aggression against bullies and bystanders”.
2018-2020. $275,000 (direct costs)
Co-Investigator, (PI: Johanna Jarcho)

Primary Mentor on Graduate Fellowship Awards:

National Science Foundation Graduate Research Fellowships to  Jamilah Silver