Case's cognitive developmental theory was used in an investigation of unconstrained drawings by children 4, 6, 8, and 10 years of age. The objectives were: (1) to look for qualitative changes in drawing at these ages, (2) to relate whatever changes were found to qualitative changes in other tasks during the same period, and (3) to test whether a positive relationship exists between these qualitative changes and changes in working memory. Seventy-five children drew pictures of a boy or girl their age and were administered the Peabody Picture Vocabulary Test, the Mister Cucumber Test and the Opposite Test. Two raters scored the drawing by the four substages of Case's dimensional or "categorical" stage. The results confirmed all three hypotheses. Attached are drawings illustrating the four substages and a graph of mean performance scores. (Author/BS)