Boccio Cashen M, Beaver Kevin M
College of Criminology and Criminal Justice, Florida State University, 145 Convocation Way, Eppes Hall, Tallahassee, FL 32306-1127, United States.
College of Criminology and Criminal Justice, Florida State University, 145 Convocation Way, Eppes Hall, Tallahassee, FL 32306-1127, United States; Center for Social and Humanities Research, King Abdulaziz University, Jeddah, Saudi Arabia.
Drug Alcohol Depend. 2017 Aug 1;177:199-206. doi: 10.1016/j.drugalcdep.2017.04.007. Epub 2017 Jun 6.
There is conflicting evidence regarding the association between adolescent marijuana use and adult intelligence, with some studies suggesting adolescent marijuana use can lead to declines in intelligence. The purpose of this study is to shed additional light on the potential link between marijuana use and changes in intelligence.
We employed change scores and ordinary least squares (OLS) analysis to test for associations between marijuana use and changes in intelligence scores from adolescence (ages 12-21) to adulthood (ages 18-26) using data drawn from the National Longitudinal Study of Adolescent to Adult Health.
The findings revealed that while a binary measure of marijuana use (ever/never) maintains a statistically significant association with changes in intelligence scores, the effect sizes are relatively small (β=0.043-0.051). Additionally, our findings did not reveal a significant association between cumulative marijuana use and changes in intelligence scores.
Taken together, the results suggest that while the binary measure of marijuana use (ever/never) has a statistically significant association with changes in intelligence scores, the binary measure accounts for at most a 1-2 point change in intelligence scores.
关于青少年使用大麻与成人智力之间的关联，证据存在冲突，一些研究表明青少年使用大麻会导致智力下降。本研究的目的是进一步阐明大麻使用与智力变化之间的潜在联系。
我们采用变化分数和普通最小二乘法（OLS）分析，利用全国青少年健康纵向研究的数据，检验青少年（12至21岁）到成年期（18至26岁）期间大麻使用与智力分数变化之间的关联。
研究结果显示，虽然大麻使用的二元测量（曾经使用/从未使用）与智力分数变化保持着统计学上的显著关联，但效应大小相对较小（β=0.043 - 0.051）。此外，我们的研究结果并未揭示累积大麻使用与智力分数变化之间存在显著关联。
综合来看，结果表明虽然大麻使用的二元测量（曾经使用/从未使用）与智力分数变化存在统计学上的显著关联，但该二元测量最多只能解释智力分数1至2分的变化。
