Sonja Siennick studies criminal offending and mental health problems in the contexts of the life course and kinship and friendship relations. Her current projects, funded by the National Institute on Drug Abuse and the National Institute of Justice, examine substance use and peer problems among adolescents with depression, and the impacts of school-based probation, mental health, and substance abuse services for justice system–involved adolescents.

Research Interests

Crime and Deviance | Mental Health | Kinship and Friendship Relations | Life Course | Quantitative Methods

Education

PhD. 2009, The Pennsylvania State University; Sociology

M.A. 2005, The Pennsylvania State University; Crime, Law, and Justice

B.A. 2001, Purchase College, State University of New York; Psychology

Grants

“The Impacts of Restrictive Housing on Inmate Behavior, Mental Health, and Recidivism, and Prison Systems and Personnel.” Research Advisor and Lead Analyst. National Institute of Justice, 2017-2019.

“The Palm Beach County School Safety and Student Performance Partnership Research Project.” Co-Principal Investigator of subcontract to Florida State University. National Institute of Justice, 2014-2018.

“Adolescent Friendship Networks and the Emergence of Substance Use.” Co-Investigator. National Institute on Drug Abuse, 2013-2018.

Recent Publications

Cochran, Joshua C., Sonja E. Siennick, and Daniel P. Mears. 2018. “Social exclusion and parental incarceration impacts on adolescents’ networks and school engagement” Journal of Marriage and Family.

Ryon, Stephanie B., Ted Chiricos, Sonja E. Siennick, William Bales, and Kelle Barrick. 2017. “Sentencing in light of collateral consequences: Does age matter?” Journal of Criminal Justice 53:1-11.

Siennick, Sonja E., and Alex O. Widdowson. 2017. “Incarceration and financial dependency during and after “youth.”” Journal of Developmental and Life-Course Criminology 3(4): 397-418.

Siennick, Sonja E., Alex O. Widdowson, and Daniel T. Ragan. 2017. “New students’ peer integration and exposure to deviant peers: Spurious effects of school moves?” Journal of Early Adolescence 37(9): 1254-1279.

Siennick, Sonja E., Alex O. Widdowson, Mathew Woessner, Mark E. Feinberg, and Richard L. Spoth. 2017. “Risk factors for substance misuse and adolescents’ symptoms of depression” Journal of Adolescent Health 60(1): 50-56.

Selected Publications

Siennick, Sonja E., and Alex O. Widdowson. 2017. Incarceration and financial dependency during and after “youth.” Journal of Developmental and Life-Course Criminology 3(4): 397-418.

Siennick, Sonja E., Alex O. Widdowson, Mathew Woessner, Mark E. Feinberg, and Richard L. Spoth. 2017. Risk factors for substance misuse and adolescents’ symptoms of depression. Journal of Adolescent Health 60(1): 50-56.

Siennick, Sonja E. 2016. Parental incarceration and intergenerational transfers to young adults. Journal of Family Issues 37(10): 1433-1457.

Siennick, Sonja E., Alex O. Widdowson, Mathew Woessner, and Mark E. Feinberg. 2016. Internalizing symptoms, peer substance use, and substance use initiation. Journal of Research on Adolescence 26(4): 645-657.

Siennick, Sonja E., Jeremy Staff, D. Wayne Osgood, John E. Schulenberg, Jerald G. Bachman, and Matthew VanEseltine. 2014. Partnership transitions and antisocial behavior in young adulthood: A within-person, multi-cohort analysis. Journal of Research in Crime and Delinquency 51(6): 735-758.

Siennick, Sonja E., Eric A. Stewart, and Jeremy Staff. 2014. Explaining the association between incarceration and divorce. Criminology 52(3): 371-398.