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Determining the Accuracy of Self-Report Versus Informant-Report Using the Conners' Adult ADHD Rating Scale.
Lisa Alexander1, Laura Liljequist2
1George Washington University, DC, USA.
This study found self-report and informant-report measures of adult ADHD symptoms are similarly valid. Multimodal assessment is recommended for accurate diagnosis of adult ADHD.
Area of Science:
- Neuroscience
- Psychology
- Clinical Research
Background:
- Adult Attention-Deficit/Hyperactivity Disorder (ADHD) diagnosis relies on various assessment methods.
- The validity of self-report versus informant-report measures compared to performance-based indicators requires further examination.
Purpose of the Study:
- To evaluate the predictive validity of self-report (CAARS-S:L) and informant-report (CAARS-O:L) for adult ADHD against performance-based cognitive indicators.
- To compare the accuracy of self-report versus informant-report in assessing ADHD symptomatology.
Main Methods:
- Utilized archival data from 118 adult participants.
- Compared Conners' Adult ADHD Rating Scale-Self-Report (CAARS-S:L) and Observer Report (CAARS-O:L) with discrepancy scores from the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III) cognitive indices.
- Calculated discrepancy scores between WAIS-III Verbal Comprehension Index - Working Memory Index (VCI - WMI) and Perceptual-Organizational Index - Processing Speed Index (POI - PSI).
Main Results:
- Neither self-report nor informant-report CAARS formats were superior predictors of WAIS-III Index score discrepancies.
- Higher correlations were observed between similar scales across different CAARS formats and for externally visible symptoms.
- Both CAARS-S:L and CAARS-O:L clinical scales significantly predicted variance in WAIS-III VCI - WMI discrepancy scores (14.7% and 16.4%).
Conclusions:
- The study did not establish greater accuracy for self-report over informant-report in assessing ADHD symptomatology.
- Findings underscore the necessity of employing multimodal assessment strategies for diagnosing ADHD in adults.
- Integrating multiple data sources enhances the comprehensive evaluation of adult ADHD.
