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Factor structure of the restricted academic situation scale: implications for ADHD
Sherif Karama1, Leila Ben Amor, Natalie Grizenko
1Department of Psychiatry, McGill University, Douglas Hospital Research Centre, Montreal, Canada.
Journal of Attention Disorders
|July 31, 2008
Summary
The Restricted Academic Situation Scale (RASS) identifies two key factors in children with ADHD: task disengagement (TD) and motor activation (MA). These factors appear to develop differently, with TD influenced by age.
Area of Science:
- Child Psychology
- Neurodevelopmental Disorders
- Psychometrics
Background:
- Attention-Deficit/Hyperactivity Disorder (ADHD) is a common neurodevelopmental disorder.
- The Restricted Academic Situation Scale (RASS) is a tool used to assess ADHD-related behaviors.
- Previous research has not fully elucidated the factor structure of the RASS.
Purpose of the Study:
- To investigate the underlying factor structure of the Restricted Academic Situation Scale (RASS).
- To determine if the factors identified by the RASS are differentially affected by methylphenidate and age in children with ADHD.
Main Methods:
- Recruited 117 boys and 21 girls (6-12 years) diagnosed with ADHD.
- Administered RASS before and after placebo or methylphenidate (0.25 mg/kg) in a double-blind, placebo-controlled crossover design.
- Utilized principal component analysis and confirmatory maximum likelihood factor analysis.
Main Results:
- The RASS yielded two primary factors: task disengagement (TD) and motor activation (MA).
- Task disengagement (TD) showed a significant inverse correlation with age.
- Motor activation (MA) was not significantly correlated with age, suggesting differential developmental modulation.
Conclusions:
- Task disengagement (TD) and motor activation (MA) represent distinct dimensions of ADHD symptomatology.
- Recognizing TD and MA as separate traits is crucial for future ADHD research and potentially for tailored interventions.
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