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SCT vs. ADHD Overview

Aug 31, 2025

Overview

This lecture distinguishes Sluggish Cognitive Tempo (SCT) from ADHD, covering symptoms, family characteristics, and effective treatments for SCT.

SCT vs. ADHD: Core Differences

  • SCT affects 30-50% of children diagnosed as inattentive type ADHD but is likely a distinct disorder.
  • SCT symptoms (slow processing, lethargy, social withdrawal) are opposite to ADHD symptoms (impulsivity, hyperactivity).
  • SCT children struggle with focused attention and may have long-term memory issues, unlike ADHD children.
  • SCT children are socially reticent and prone to anxiety, with low rates of oppositional defiant disorder (ODD) and conduct disorder (CD).
  • ADHD is a self-regulation and inhibition disorder; SCT is not.
  • ADHD children often have more family issues (e.g., ADHD, anti-social behavior, substance abuse) than SCT children.

Impact on School and Social Life

  • SCT is mainly a problem of accuracy in schoolwork; children complete assignments but make frequent errors.
  • ADHD is a productivity disorder, with children often failing to complete work.
  • SCT children are generally well-behaved outside school, have a few friends, and do not cause disruptions.
  • Parents of SCT children mainly worry about school performance, not broader behavioral or social issues.

Treatment and Intervention

  • Standard ADHD medications are mostly ineffective for SCT; lowest doses may be tried but rarely continued.
  • SCT responds best to social skills training in natural settings (e.g., school), not clinics.
  • Social skills groups can make 1 in 4 children worse due to deviancy training; clinicians should be cautious.
  • Behavioral interventions may work even better for SCT than ADHD, as anxiety predicts positive response.
  • Cognitive therapy fails for ADHD but may be worth exploring for SCT.
  • Medications like Atomoxetine (Strattera) and Modafinil (Provigil) are speculative options for SCT; evidence is lacking.

Key Terms & Definitions

  • SCT (Sluggish Cognitive Tempo) — A disorder with symptoms of slow processing, lethargy, and social withdrawal, distinct from ADHD.
  • ADHD (Attention Deficit Hyperactivity Disorder) — A disorder characterized by impulsivity, hyperactivity, and self-regulation deficits.
  • ODD (Oppositional Defiant Disorder) — A behavioral disorder with defiant and disruptive behaviors.
  • CD (Conduct Disorder) — A disorder involving repetitive, aggressive, or antisocial behavior.

Action Items / Next Steps

  • If working with SCT children, prioritize school-based interventions and social skills training.
  • Do not apply standard ADHD resources or treatments directly to SCT cases.
  • Monitor new research and interventions specific to SCT as the field develops.