Sonja E. Siennick

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OBJECTIVE To develop treatment recommendations for the use of antipsychotic medications for children and adolescents with serious psychiatric disorders and externalizing behavior problems. METHOD Using a combination of evidence- and consensus-based methodologies, recommendations were developed in six phases as informed by three primary sources of(More)
Companions are central to explanations of the risky nature of unstructured and unsupervised socializing, yet we know little about whom adolescents are with when hanging out. We examine predictors of how often friendship dyads hang out via multilevel analyses of longitudinal friendship-level data on over 5,000 middle schoolers. Adolescents hang out most with(More)
A previously published effectiveness study of Project ALERT delivered in schools by outside providers from Cooperative Extension found no positive effects for the adult or teen-assisted delivery of the curriculum despite high-quality implementation. Those findings and the likelihood that more outside providers will deliver evidence-based drug prevention(More)
In adolescents, antipsychotics are most often used to treat complex, comorbid conditions with core disruptive features. However, the literature guiding such practices is limited. Best practice guidelines bridging the gap between the evidence and clinical practice have been developed to promote the appropriate and safe use of antipsychotics in aggressive(More)
Recent studies have suggested that incarceration dramatically increases the odds of divorce, but we know little about the mechanisms that explain the association. This study uses prospective longitudinal data from a subset of married young adults in the National Longitudinal Study of Adolescent Health (N = 1,919) to examine whether incarceration is(More)
Objectives. The transition to adulthood can be challenging, especially for children of incarcerated parents. Drawing on reentry and life-course scholarship, we argue that parental incarceration may adversely affect multiple life outcomes for children as they progress from adolescence into adulthood and that such effects may persist from early young(More)
Early age-of-onset delinquency and substance use confer a major risk for continued criminality, alcohol and drug abuse, and other serious difficulties throughout the life course. Our objective is to examine the developmental roots of preteen delinquency and substance use. Using nationally representative longitudinal data from the UK Millennium Cohort Study(More)
This study examined within-family stability in parents' differential treatment of siblings from adolescence to young adulthood and the effect of differential treatment in young adulthood on grown siblings' relationship quality. The author used longitudinal data on parent - child and sibling relations from the sibling sample of the National Longitudinal(More)
OBJECTIVES This study examines the effects of young adult transitions into marriage and cohabitation on criminal offending and substance use, and whether those effects changed since the 1970s as marriage rates declined and cohabitation rates rose dramatically. It also examines whether any beneficial effects of cohabitation depend on marriage intentions. (More)