Attention-Deficit/Hyperactivity Disorder and Behavioral Inhibition: A Meta-Analytic Review of the Stop-signal Paradigm |
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Authors: | R. Matt Alderson Mark D. Rapport Michael J. Kofler |
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Affiliation: | Department of Psychology, University of Central Florida, P. O. Box 161390, Orlando, FL 32816-1390, USA. |
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Abstract: | Deficient behavioral inhibition (BI) processes are considered a core feature of attention deficit/hyperactivity disorder (ADHD). This meta-analytic review is the first to examine the potential influence of a wide range of subject and task variable moderator effects on BI processes--assessed by the stop-signal paradigm--in children with ADHD relative to typically developing children. Results revealed significantly slower mean reaction time (MRT), greater reaction time variability (SDRT), and slower stop-signal reaction time (SSRT) in children with ADHD relative to controls. The non-significant between-group stop-signal delay (SSD) metric, however, suggests that stop-signal reaction time differences reflect a more generalized deficit in attention/cognitive processing rather than behavioral inhibition. Several subject and task variables served as significant moderators for children's mean reaction time. |
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Keywords: | Stop-signal Behavioral inhibition Attention deficit hyperactivity disorder ADHD Meta-analysis |
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