Sluggish Cognitive Tempo in Adults Referred for an ADHD Evaluation: A Psychometric Analysis of Self- and Collateral Report.

Published online

Journal Article

OBJECTIVE: Sluggish cognitive tempo (SCT) symptoms uniquely contribute to psychiatric and functional outcomes in child samples; however, the psychometric properties of SCT measures among adult outpatients are unknown. METHOD: Adults ( n = 124) presenting for an ADHD evaluation provided self- and collateral report of SCT symptoms. RESULTS: The SCT scale had good internal consistency and yielded three factors across raters: Slow/Daydreamy, Sleepy/Sluggish, and Low Initiation/Persistence. SCT scores exhibited convergent validity with ADHD symptoms across raters. Individuals with ADHD received higher SCT ratings than those without ADHD via collateral report, a pattern that was similar when comorbidity was considered. SCT was associated with poorer functioning after accounting for ADHD symptoms with some differential effects based on reporting source. CONCLUSION: Findings support the internal consistency and validity of a three-factor SCT scale among adult outpatients. Differential results between self- and collateral report demonstrate the importance of multiple reporters of SCT in clinical settings.

Full Text

Duke Authors

Cited Authors

  • Lunsford-Avery, JR; Kollins, SH; Mitchell, JT

Published Date

  • July 1, 2018

Published In

Start / End Page

  • 1087054718787894 -

PubMed ID

  • 30024295

Pubmed Central ID

  • 30024295

Electronic International Standard Serial Number (EISSN)

  • 1557-1246

Digital Object Identifier (DOI)

  • 10.1177/1087054718787894


  • eng

Conference Location

  • United States