CONCURRENT VALIDITY OF THE COGNITIVE-ABILITIES SCALE AND BINET IV FOR NONVOCAL 2-YEAR-OLDS AND 3-YEAR-OLDS

The concurrent validity of the Nonvocal Cognitive Quotient (NVCQ) of the Cognitive Abilities Scale (CAS) and the Binet IV was examined for 2- and 3-year-olds referred to Project Find. Adequate concurrent validity was found for the CAS NVCQ and the Binet IV Verbal Comprehension at both age levels as well as for the Nonverbal Reasoning/Visualization factor of the Binet IV at age 3. A significant, but moderate correlation was obtained with 2-year-olds for the NVCQ and the Binet IV Nonverbal Reasoning/Visualization factor, the Binet IV scores being significantly higher scores. Differences in the results for the 2-year-olds are discussed. The implications of the results are presented.