Abstract
Correlations among the PPVT, CMMS, and RCPM were based on the performance of 38 cerebral palsied children whose mean age was 149.4 mo. The coefficients were all positive and significant (p < .05). Considerable scatter in IQs was found among sets of data. The mean IQ on the PPVT was approximately 20 points higher than the mean IQs obtained from the CMMS and the RCPM, which were approximately equal. Comparison of scores for non-cerebral palsied children on these tests showed all three gave similar mean IQs. However, correlations among tests for non-cerebral palsied children differed from those for cerebral palsied children.