Abstract
Sluggish cognitive tempo (SCT) has been associated with attention deficit and hyperactivity disorder inattention subtype (ADHD-I). SCT symptoms have been found in clinical groups without ADHD, also correlations between SCT and measures of anxiety, and in other psychiatric disorders. The results regarding neuropsychological differences between subtypes of ADHD and SCT are controversial. Some authors suggest that high levels of both SCT and ADHD could be indicative of a new attentional disorder. The aim of this paper is a theoretical review of this construct. We conclude that there is a clear statistical validity of SCT; that it can be distinguished from ADHD and presents its own characteristics. Although SCT shows a strong association with ADHD, it probably is a separate entity that may act as a modulating factor of other attentional features that affect not only executive functions but also certain psychopathological manifestations mostly present in anxiety or depression.
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