Format

Send to

Choose Destination
See comment in PubMed Commons below
Brain Cogn. 2014 Jul;88:26-34. doi: 10.1016/j.bandc.2014.04.010. Epub 2014 May 16.

Association of television violence exposure with executive functioning and white matter volume in young adult males.

Author information

1
Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, United States; Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, United States. Electronic address: thummer@iupui.edu.
2
Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, United States.
3
Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, United States.
4
Department of Psychology, Iowa State University, Ames, IA, United States.

Abstract

Prior research has indicated that self-reported violent media exposure is associated with poorer performance on some neuropsychological tests in adolescents. This study aimed to examine the relationship of executive functioning to violent television viewing in healthy young adult males and examine how brain structure is associated with media exposure measures. Sixty-five healthy adult males (ages 18-29) with minimal video game experience estimated their television viewing habits over the past year and, during the subsequent week, recorded television viewing time and characteristics in a daily media diary. Participants then completed a battery of neuropsychological laboratory tests quantifying executive functions and underwent a magnetic resonance imaging (MRI) scan. Aggregate measures of executive functioning were not associated with measures of overall television viewing (any content type) during the past week or year. However, the amount of television viewing of violent content only, as indicated by both past-year and daily diary measures, was associated with poorer scores on an aggregate score of inhibition, interference control and attention, with no relationship to a composite working memory score. In addition, violent television exposure, as measured with daily media diaries, was associated with reduced frontoparietal white matter volume. Future longitudinal work is necessary to resolve whether individuals with poor executive function and slower white matter growth are more drawn to violent programming, or if extensive media violence exposure modifies cognitive control mechanisms mediated primarily via prefrontal cortex. Impaired inhibitory mechanisms may be related to reported increases in aggression with higher media violence exposure.

KEYWORDS:

Executive function; Inhibition; Media violence; Television; Voxel-based morphometry

PMID:
24836970
DOI:
10.1016/j.bandc.2014.04.010
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center