Common Short Forms of the Spanish Wechsler Adult Intelligence Scale
Although the Escala de Inteligencia Wechsler (EIWA) has remained the only standard Spanish version of the Wechsler Adult Intelligence Scale (WAIS) and is consequently the most often-used intelligence test with Spanish-speaking clients, little information exists on the psychometric properties of the test beyond the information in the test manual (Wechsler, 1968). There is no information on the validity or reliability of commonly used short forms of the test, the two-test version using Block Design and Vocabulary, and the four-test version using Block Design, Vocabulary, Arithmetic, and Picture Arrangement. Using the statistical data in the test manual, the two-test version yielded reliabilities of .94 to .95 across the three standardization age groups and validity ratings of .92 to .93. Values for the four-test version were slightly higher, and all were comparable to those for the WAIS and WAIS–R. The results suggest that the short forms can be used with the same confidence with the Spanish WAIS as on the WAIS.