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Sluggish Cognitive Tempo (SCT) is an unformalized descriptive term which is used to better identify what appears to be a homogeneous sub-subgroup within the formal subgroup ADHD predominantly inattentive (ADHD-I or ADHD-PI) classification in the Diagnostic and Statistical Manual of Mental Disorders, fourth edition. It has been roughly estimated that the SCT population may make up 30-50% of the ADHD-PI population.

In many ways, those who have an SCT profile have the opposite symptoms of those with classic ADHD: Instead of being hyperactive, extroverted, obtrusive, and risk takers, those with SCT are passive, daydreamy, shy, and "HYPO"-active in both a mental and physical way. They also don't have the same risk factors and outcomes. Their demeanor is sluggish, as if "in a fog" and logically they also process information more slowly. A key behavioural characteristic of those with SCT symptoms is that they are more likely to appear to be lacking motivation. They lack energy to deal with mundane tasks and will consequently seek things that are mentally stimulating because of their underaroused state. Those with SCT symptoms show a qualitatively different kind of attention deficit that is more typical of a true information input-output problem, such as memory retrieval and active working memory. Conversely, those with the other two subtypes of ADHD are characteristically excessively energetic and have no difficulty processing information.

Sluggish cognitive tempo

Sluggish Cognitive Tempo (SCT) is a descriptive term which is used to better identify what appears to be a homogeneous group within the ADHD predominantly inattentive (ADHD-I or ...

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Sluggish cognitive tempo - Wikipedia, the free encyclopedia

Sluggish cognitive tempo (SCT) is a subtype of the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders' attention-deficit/hyperactivity disorder ...

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