Abstract
Nine measures of Vigotsky Block Test performance were obtained from 50 sixth-grade girls with mental ages ranging from 8 to 14. Of 45 intercorrelations obtained between the measures and mental ages, and among the measures themselves, 20 were significant (p = .01 or .05) In general, it was demonstrated that an increase in mental age results in greater ability to verbalize the major concept involved in the Vigotsky test. Mental age was not related to the use of more “mature” types of approaches to the task or to the amount of time or the number of clues needed to complete it successfully. A formula was derived for obtaining the four Vigotsky measures which contributed significantly to predicting the mental ages of Ss from their test performance. Some children's norms for the Vigotsky were also presented.