The academic consequences of marijuana use during college.
The academic consequences of marijuana use during college.
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DOI：
10.1037/adb0000108
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发表时间：
2015-09
期刊：
影响因子：
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通讯作者：
O'Grady KE
中科院分区：
文献类型：
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作者：
Arria AM;Caldeira KM;Bugbee BA;Vincent KB;O'Grady KE
虽然一些研究表明，大麻的使用会对青少年的学业成绩产生不利影响，但很少有研究关注其对中学后教育成果的影响。这项研究利用了一项对大学生进行的大型纵向队列研究的数据，以测试大麻使用对大学GPA和毕业时间的直接和间接影响，并将逃课作为这些结果的中介。考虑到各种基线风险和保护因素（即，人口统计学，大学参与，心理功能，酒精和其他药物使用）被认为有助于大学学术成果。结果显示，从基线大麻使用频率到基线时跳过更多课程，到第一学期GPA较低，再到毕业时间较长，这是一条重要的路径。其他药物使用和酒精量的基线措施表现出类似的间接影响GPA和毕业时间。随着时间的推移，大麻使用的变化率与GPA的变化率呈负相关，但没有考虑到毕业时间的任何额外变化。逃课的百分比与GPA在基线和随着时间的推移呈负相关。因此，即使考虑到人口统计学和其他因素，大麻的使用也会直接或间接地通过较差的课堂出勤率对大学的学术成果产生不利影响。结果扩展了先前的研究，表明大学期间使用大麻可能是学业成就的障碍。预防和早期干预可能是促进中学后学业成就的综合战略的重要组成部分。
Although several studies have shown that marijuana use can adversely affect academic achievement among adolescents, less research has focused on its impact on post-secondary educational outcomes. This study utilized data from a large longitudinal cohort study of college students to test the direct and indirect effects of marijuana use on college GPA and time to graduation, with skipping class as a mediator of these outcomes. A structural equation model was evaluated taking into account a variety of baseline risk and protective factors (i.e., demographics, college engagement, psychological functioning, alcohol and other drug use) thought to contribute to college academic outcomes. The results showed a significant path from baseline marijuana use frequency to skipping more classes at baseline to lower first-semester GPA to longer time to graduation. Baseline measures of other drug use and alcohol quantity exhibited similar indirect effects on GPA and graduation time. Over time, the rate of change in marijuana use was negatively associated with rate of change in GPA, but did not account for any additional variance in graduation time. Percentage of classes skipped was negatively associated with GPA at baseline and over time. Thus, even accounting for demographics and other factors, marijuana use adversely affected college academic outcomes, both directly and indirectly through poorer class attendance. Results extend prior research by showing that marijuana use during college can be a barrier to academic achievement. Prevention and early intervention might be important components of a comprehensive strategy for promoting post-secondary academic achievement.