Examined validity of use of human figure drawing to evaluate cognitive development status using Piagetian tasks with 7- to 11-year-olds. Found that scores for children's drawings of a man and a woman correlated significantly with mental imaging, conservation of mass, and conservation of length, suggesting the possibility of finding patterns to…

The predictive validity of an original Piagetian instrument (the Piagetian Task Instrument) was compared with that of two frequently used published screening tests for children entering kindergarten: (1) the Brigance K-1 Screen, and (2) the Merrill Language Screening Test. The relative contribution of each test was determined when they were…