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2015 ; 29
(3
): 564-75
Nephropedia Template TP
gab.com Text
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The academic consequences of marijuana use during college
#MMPMID26237288
Arria AM
; Caldeira KM
; Bugbee BA
; Vincent KB
; O'Grady KE
Psychol Addict Behav
2015[Sep]; 29
(3
): 564-75
PMID26237288
show ga
Although several studies have shown that marijuana use can adversely affect
academic achievement among adolescents, less research has focused on its impact
on postsecondary 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 grade point average (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 postsecondary academic achievement.