Psychological Reports · 1967 · 23 citations · 2 references
EducationEducational AssessmentEducational MeasurementIndividual DifferencesPsychometricsTest DevelopmentCognitive FunctioningIntelligence AssessmentPsychological TestingReliabilityTest ReliabilityTest ValidityIntellectual AbilityIntelligence QuotientPerformance-based Intelligence TestsPractice Test EffectReliability EvidenceTest Score ReliabilityTest-retest ReliabilityVerbal Intelligence Tests
Upon re-testing with Shipley S-ILS (3 mo., 56 Ss), reliability coefficients are: Verbal, .77; Abstract, .63; Conceptual Quotient, .57; and Intelligence Quotient, .74 (all ps < .01). These coefficients and the pattern of mean-score increases suggest that the S-ILS is a “weak” measure of intellectual deterioration but a “better” measure of intellectual functioning.
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