This study was undertaken to determine reliability and validity estimates for a newly developed preschool inventory of cognitive functioning which provides many advantages over traditionally utilized measures. A predominantly pictorial stimulus-psychomotor response set was the format for the test. The test consisted of a series of 61 items divided into six sections: passive vocabulary, complementary relationships, noncomplementary relationships, number concepts, verbal analogies, and awareness of self. A KR-20 reliability coefficient of .93 was obtained on a sample of 85 nursery school children. In terms of validity, significant correlations with the Stanford-Binet, the Slosson Intelligence Test and the Peabody Picture Vocabulary Test were obtained on a sample of 20 children and later on a sample of 68 children. For the latter sample, these correlations were .90, .86 and .91, respectively. The advantages of the test are that the administrative time is brief and that it can be used by the average preschool teacher. (Author/CS)