Total number of questions
Parents of children
Scoring and interpretation
Answers are scored on a 3-point Likert scale from 0 for "Never," 1 for "Sometimes," and 2 for "Often." Scores are summed and total scores range from 0 to 34. Higher scores are associated with poorer psychosocial functioning. A total score of 15 or higher suggests clinically significant psychosocial issues. In addition, there are three subscales. The Internalizing subscale is made up of questions 5, 6, 9, 10, 11. A score of 5 or more suggests clinically significant issues. The Externalizing subscale is made up of questions 8, 12, 13, 14, 15, 16, 17. A score of 7 or greater suggests clinically significant issues. And the Attention subscale is made up of questions 1, 2, 3, 4, 7. A score of 7 or more suggests clinically significant issues.
Reliability and validity
Test/retest reliability of the PSC ranges from r = .84 - .91. Over time, case/not case classification ranges from 83%-87% and kappa = .84 (Jellinek et al. 1988; Murphy et al. 1992). Studies (Murphy & Jellinek 1988; Murphy et al. 1996) indicate strong internal consistency of the PSC items (Cronbach alpha = .91) and highly significant (p < 0.001) correlations between individual PSC items and positive PSC screening scores.
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