Abstract
30 native Costa Ricans were administered three intellignce tests: Raven's Coloured Progressive Matrices, the IPAT Culture-fair Intelligence Test, and a Spanish version of the WAIS. Results indicated that correlations among the three measures were high, particularly between the culture-fair scale and the WAIS. Comparing these two tests suggested a floor effect and positively skewed distribution of standard scores for the culture-fair scale but a normal distribution and no floor effect for the WAIS. Correlations of the three tests with various independent criteria were quite similar. This finding, in conjunction with the high intertest correlations, suggested that the floor effect with the culture-fair scale can be attributed to the absence of standardization in a Spanish culture.
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