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  • Title: Serotonin transporter genetic variation and biased attention for emotional word stimuli among psychiatric inpatients.
    Author: Beevers CG, Gibb BE, McGeary JE, Miller IW.
    Journal: J Abnorm Psychol; 2007 Feb; 116(1):208-12. PubMed ID: 17324031.
    Abstract:
    The short allele in a variable repeat sequence of the promoter region of the serotonin transporter gene (5-HTTLPR) has been associated with stronger activation in brain regions critical for processing emotional stimuli. The authors examined whether variants of the 5-HTTLPR promoter polymorphism were also associated with individual differences in attentional biases for emotional stimuli. Words related to anxious and dysphoric emotional states were presented to psychiatric inpatients in a standard dot-probe reaction time task. Compared with participants with two long alleles, carriers of the short 5-HTTLPR allele exhibited a stronger attentional bias for anxious word stimuli. No genetic group difference was observed for dysphoric word stimuli. Findings from this preliminary study highlight the potential for integrating genetic and cognitive models of psychopathology.
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