The Pittsburgh Youth Study (PYS) started data collection in 1987, with three age cohorts of inner-city boys from the Pittsburgh Public School system. The youngest cohort (N = 503), the middle cohort (N = 508), and the oldest cohort (N = 506) were assessed first every 6 months, and later annually. Information was collected from participants, their parents, and their teachers. The PYS is one of the longest running longitudinal studies on delinquency and mental health in the USA. Data collection was last conducted in 2019, in the form of official criminal records. The PYS has generated numerous books, chapters, and peer-reviewed papers spanning a large number of different outcomes including delinquency, serious violence, mental health problems, and other health behaviors. Data is publicly available.

匹兹堡青年研究（PYS）于1987年开始收集数据，当时有来自匹兹堡公立学校系统的三个年龄段的内城区男孩。最年轻的队列（N  = 503），中的队列（N  = 508）和最老的队列（N = 506），每6个月进行一次评估，然后每年进行一次评估。信息是从参与者，他们的父母和他们的老师那里收集的。PYS是美国进行时间最长的关于犯罪和心理健康的纵向研究之一。数据收集最后一次于2019年以官方犯罪记录的形式进行。PYS生成了许多书籍，章节和经过同行评审的论文，涵盖了许多不同的结果，包括犯罪，严重暴力，精神健康问题和其他健康行为。数据是公开可用的。