Pittsburgh Youth Study Youngest Sample (1987 - 2001) [Pittsburgh, Pennsylvania]

The Pittsburgh Youth Study (PYS) is part of the larger "Program of Research on the Causes and Correlates of Delinquency" initiated by the Office of Juvenile Justice and Delinquency Prevention in 1986. PYS aims to document the development of antisocial and delinquent behavior from childhood to early adulthood, the risk factors that impinge on that development, and help seeking and service provision of boys' behavior problems. The study also focuses on boys' development of alcohol and drug use, and internalizing problems. PYS consists of three samples of boys who were in the first, fourth, and seventh grades in Pittsburgh, Pennsylvania public schools during the 1987-1988 academic year (called the youngest, middle, and oldest sample, respectively). Using a screening risk score that measured each boy's antisocial behavior, boys identified at the top 30 percent within each grade sample on the screening risk measure (n=~250), as well as an equal number of boys randomly selected from the remainder (n=~250), were selected for follow-up. Consequently, the final sample for the study consisted of 1,517 total students selected for follow-up. 506 of these students were in the oldest sample, 508 were in the middle sample, and 503 were in the youngest sample. Assessments were conducted semiannually and then annually using multiple informants (i.e., boys, parents, teachers) between 1987 and 2010. The youngest sample was assessed from ages 6-19 and again at ages 25 and 28. The middle sample was assessed from ages 9-13 and again at age 23. The oldest sample was assessed from ages 13-25, with an additional assessment at age 35. Information has been collected on a broad range of risk and protective factors across multiple domains (e.g., individual, family, peer, school, neighborhood). Measures of conduct problems, substance use/abuse, criminal behavior, mental health problems have been collected. This study collection contains only the youngest sample respondents.

匹兹堡青少年研究（PYS）是1986年由青少年司法与犯罪预防办公室发起的更大规模“青少年犯罪原因与相关因素研究计划”的一部分。PYS旨在记录从儿童期到成年早期反社会和犯罪行为的发展过程，以及影响这一发展过程的风险因素，以及男孩行为问题的寻求帮助与服务提供。研究还着重于男孩酒精和药物使用以及内化问题的形成。PYS包括三个样本，分别是在1987-1988学年匹兹堡宾夕法尼亚公立学校一年级、四年级和七年级的男孩（分别称为最年轻样本、中间样本和最年样本）。通过一项筛选风险评分，该评分衡量了每个男孩的反社会行为，确定了在每个年级样本中筛选风险衡量标准前30%的男孩（n≈250），以及从剩余部分随机选取的同等数量的男孩（n≈250），他们被选为后续研究。因此，最终的研究样本由1,517名被选为后续研究的学生组成。其中，最年样本有506名学生，中间样本有508名学生，最年轻样本有503名学生。评估工作在1987年至2010年期间每半年进行一次，然后每年进行一次，采用多来源信息（即男孩、父母、教师）。最年轻样本从6岁到19岁进行评估，并在25岁和28岁时再次评估。中间样本从9岁到13岁进行评估，并在23岁时再次评估。最年样本从13岁到25岁进行评估，并在35岁时进行了一次额外的评估。在多个领域（例如个人、家庭、同伴、学校、社区）广泛收集了风险和保护性因素的信息。还收集了行为问题、物质使用/滥用、犯罪行为、心理健康问题的衡量指标。本研究集合仅包含最年轻样本的受访者信息。