Cannabis legalization: Youth substance use, conduct problems, & HIV risk behavior

描述(由申请人提供)：这项为期5年的R01，竞争性继续研究将审查华盛顿州最近成人(21岁以上)大麻合法化与大麻使用模式和相关危险行为之间的联系，包括其他物质使用、行为问题和年轻人中的HIV性危险行为(SRB)。它还将审查成人大麻合法化与青少年大麻使用先例的变化之间的联系，包括青少年规范；父母大麻和其他物质的使用和规范；育儿做法；感知的同伴、兄弟姐妹和伴侣的使用和规范；以及可获得性。分析将测试 青少年大麻使用和相关危险行为的任何变化是否由青少年使用大麻的前因的变化来解释(中介)。拟议的项目特别适合于实现这些目标。它建立在代际项目(TIP)的基础上，这是一项采用加速纵向设计的研究，旨在了解父母物质使用对儿童发育的影响(n=383个家庭，80%生活在华盛顿州)。TIP包括从先前的纵向小组研究(西雅图社会发展项目(SSDP))中抽取的父母，他们最年长的亲生孩子，以及第二个照顾者(如果有)。TIP收集了最近(2010年)合法化前的数据，为评估这一重要的政策转变奠定了基础。可获得的合法化前青年数据跨度为1-22岁，父母数据跨度为27-35岁(2002-2010年，7次评估)。这项拟议的研究将在2015年、2016年和2017年在合法化后增加3个额外的年度数据收集，对象是父母、青少年和第二个照顾者。建议的项目是由社会发展模型和问题行为理论驱动的。合法使用成人大麻对青少年的影响尚不清楚。这项研究将首次测试成人大麻合法化和青少年大麻使用、相关危险行为及其前因之间的联系。加速的纵向设计将使我们能够使用重叠的队列来绘制大麻合法化前后青年成果的轨迹，将发展和历史(政策变化)分开，并以其他研究无法做到的方式促进对大麻合法化和发展的交集的理解。据我们所知，在华盛顿或科罗拉多州，没有其他正在进行的关于青年的加速纵向研究，这使得TIP以一种了解发展的方式独特地准备审查大麻合法化对青年的影响。这些成果将为国家和国家大麻政策以及在合法化背景下预防青少年使用大麻提供重要信息。

DESCRIPTION (provided by applicant): This 5-year R01, competing continuation study will examine links between the recent legalization of cannabis for adults (age 21+) in Washington State and patterns of cannabis use and related risk behaviors, including other substance use, conduct problems, and HIV sexual risk behavior (SRB) among youth. It also will examine links between cannabis legalization for adults and changes in antecedents of youth cannabis use, including youth norms; parent cannabis and other substance use and norms; parenting practices; perceived peer, sibling, and partner use and norms; and availability. Analyses will test whether any changes in youth cannabis use and associated risk behavior are explained (mediated) by changes in antecedents of youth cannabis use. The proposed project is uniquely suited to address these goals. It builds on The Intergenerational Project (TIP), a study that uses an accelerated longitudinal design, and aims to understand the effects of parent substance use on child development (n = 383 families, 80% living in Washington State). TIP includes parents drawn from a prior longitudinal panel study (the Seattle Social Development Project (SSDP)), their oldest biological child, and a second caregiver when available. TIP collected recent (2010) pre-legalization data, setting the stage for an evaluation of this important policy shift. Availabl pre-legalization youth data span ages 1-22 and parent data span ages 27-35 (2002-2010, 7 assessments). The proposed study would add 3 additional annual data collections post-legalization in 2015, 2016, and 2017 with parents, youth, and second caregivers. The proposed project is driven by the Social Development Model and Problem Behavior Theory. The effects on youth of legalized adult cannabis use are unknown. This study will be the first to test links between cannabis legalization for adults and youth cannabis use, associated risk behavior, and their antecedents. The accelerated longitudinal design will enable us to use overlapping cohorts to map trajectories of youth outcomes pre- and post-legalization, disentangling development and history (policy change) and facilitating understanding about the intersection of cannabis legalization and development in ways that other studies cannot. We are aware of no other ongoing accelerated longitudinal study of youth in either Washington or Colorado, making TIP uniquely poised to examine the impact of cannabis legalization on youth in a developmentally informed way. Results will provide information critical to inform state and national cannabis policy and prevention of youth cannabis use in the context of legalization.