Introduction: Impulsivity is a symptom of attention-deficit/hyperactivity disorder (ADHD) and variants in the ) gene (OMIM 616417) have been linked to ADHD. This project utilized a delay-discounting (DD) task to examine the impact of deletion in rats on impulsive choice. "Positive control" measures were also collected in spontaneously hypertensive rats (SHRs), another animal model of ADHD.
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