The goal of the proposed research is to investigate marijuana legalization in Washington State and its association with changes in marijuana norms, patterns of marijuana use, and use of other substances. The study will examine the moderating role of social and built environmental factors as well as functioning in adult roles and active/sedentary lifestyles. We will also assess marijuana-specific parenting behaviors and explore parents? concerns and ideas related to the new law in order to inform prevention efforts. The administrative supplement will augment a study recently funded by NIDA entitled Environmental Mechanisms for Health, Drug Abuse, and HIV Risk Behavior in the 30s. This study will collect a new wave of data at age 39 from a Seattle based longitudinal cohort that was previously interviewed 14 times from age 10 to age 35. All 14 interviews asked about marijuana use, with increasing detail as participants aged through adolescence, and included diagnostic assessments of marijuana abuse and dependence in adulthood. With the additional marijuana focused data collected through the supplement, the study will be uniquely positioned to address important questions about the effects of marijuana legalization.

Public Health Relevance

The goal of this study is to investigate marijuana legalization in Washington State and its association with changes in marijuana norms, patterns of marijuana use, and use of other substances. The study examines the moderating role of environmental factors and adult functioning, and assesses marijuana-specific parenting behaviors in order to inform prevention efforts. The study augments data from a Seattle-based longitudinal cohort that was previously interviewed 14 times from age 10 to age 35 with new marijuana-focused measures at age 39.

Agency
National Institute of Health (NIH)
Institute
National Institute on Drug Abuse (NIDA)
Type
Research Project (R01)
Project #
3R01DA033956-01A1S1
Application #
8667911
Study Section
Program Officer
Etz, Kathleen
Project Start
2013-07-01
Project End
2014-06-30
Budget Start
2013-08-15
Budget End
2014-06-30
Support Year
1
Fiscal Year
2013
Total Cost
$243,279
Indirect Cost
$45,322
Name
University of Washington
Department
None
Type
Schools of Social Work
DUNS #
605799469
City
Seattle
State
WA
Country
United States
Zip Code
98195
Kosterman, Rick; Hill, Karl G; Lee, Jungeun Olivia et al. (2014) Young adult social development as a mediator of alcohol use disorder symptoms from age 21 to 30. Psychol Addict Behav 28:348-58