The Intellectual Screening Scale of the Personality Inventory for Children: Dangers in the Application of Constricted Constructs,
LETTERMAN ARMY MEDICAL CENTER SAN FRANCISCO CALIF
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The Intellectual Screening Scale ISS of the Personality Inventory for Children PIC is clinically useful in screening for intellectual deficit. However, when administered to a group of children referred for evaluation because of concerns about speech delay, the ISS was found to underestimate scores on psychometric tests of intelligence. The findings are consistent with conceptualizations of intelligence as multifactorial construct including, at least, verbal and nonverbal components. While these results may disqualify the ISS for use with nonverbal individuals, it likely remains a valid instrument for measuring a personality trait that could be called observed intelligent behavior of a vocally mediated nature. The findings seem to call for greater sophistication and caution in the scientific use and clinical application of labels and constructs about cognitive functions.