Retest reliability of the Wechsler Preschool and Primary Scale of Intelligence test scores was performed in Iran using 30 subjects in a time interval of 5 to 6 wk. The results of this analysis suggest that this restandardization of the WPPSI provides a consistent measure of intelligence for application in Iran. Reliability coefficients of .83, .90, and .88 were found for Verbal IQ, Performance IQ, and Full Scale IQ, respectively.
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