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Low grades in adolescence linked to dopamine genes
Date:9/2/2010

The academic performance of adolescents will suffer in at least one of four key subjects English, math, science, history if their DNA contains one or more of three specific dopamine gene variations, according to a study led by renowned biosocial criminologist Kevin M. Beaver of The Florida State University.

The research sheds new light on the genetic components of academic performance during middle and high school, and on the interplay of specific genes and environmental factors such as peer behavior or school conditions.

"We believe that dopaminergic genes affect GPA because they have previously been linked to factors associated with academic performance, including adolescent delinquency, working memory, intelligence and cognitive abilities, and ADHD, among others," Beaver said. "So, the genetic effect would operate indirectly via these other correlates to GPA and school performance."

Findings from the study are described in a paper for which Beaver served as lead author that was published online Aug. 30 in the journal Intelligence. He and his coauthors performed their groundbreaking analysis using DNA and lifestyle data from a representative group of 2,500 U.S. middle- and high-school students who were tracked from 1994 to 2008 in the National Longitudinal Study of Adolescent Health.

"We found that as the number of certain dopaminergic gene variants increased, grade point averages decreased, and the difference was statistically significant," Beaver said. "For example, the GPA of a student with specific variants of three dopaminergic genes might be around 2.8, versus a GPA of around 3.3 without the variants. That could mean the difference between being accepted into a college versus being rejected.

"Unfortunately, we know that students with lower GPAs are generally more likely to participate in antisocial or criminal activities, and less likely to attend college and earn comparatively higher salaries a
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Contact: Kevin Beaver
kbeaver@fsu.edu
850-644-9180
Florida State University
Source:Eurekalert  

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