A short form of the Wechsler Preschool and Primary Scale of Intelligence for use in Iran.

Data from the standardization of the Wechsler Preschool and Primary Scale of Intelligence in Shiraz, Iran (193 girls, 203 boys 4 to 6.5 yr. old) were used to develop a short form. Four subtests (Vocabulary, Arithmetic, Picture Completion, and Block Design) were selected on the basis of their high correlations with Full Scale IQs. The validity coefficients were high and significant. The standard errors for the short form were 4.0 to 6.0 points. The short form classified correctly about 73% of the subjects by category of intelligence but tended to underestimate the IQs of subjects of high intelligence and to overestimate the IQs of subjects with low intelligence. Further work is required.