期刊
RESEARCH IN DEVELOPMENTAL DISABILITIES
卷 34, 期 1, 页码 65-71出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ridd.2012.07.017
关键词
Down syndrome; Cognitive inhibition; Working memory
The cognitive profile of individuals with Down syndrome (DS) is known to be characterized by an impaired executive functioning, but inhibition-related processes have not been extensively examined in this setting. The aim of the present study was to investigate whether individuals with DS have any specific or general deficit in inhibitory processes. Tasks measuring prepotent response inhibition (the animal Stroop test), proactive interference (proactive interference task and intrusion errors), and response to distracters (directed forgetting task) were administered together with a working memory test to 19 individuals with DS and 19 typically developing (TD) children matched for mental age. Confirming previous findings, our results showed that the DS group performed less well in a verbal working memory task than the TD children. Analyzing our findings for the three inhibitory tasks yielded a picture of the DS children having a generalized difficulty in suppressing information that is irrelevant, or no longer relevant, to the goals of the task. These results suggest that DS is related not to specific, but rather to generalized inhibitory difficulties. (C) 2012 Elsevier Ltd. All rights reserved.
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