The major purpose of this study was to investigate expressive content language differences in preschool black children that might relate to Piaget's theory of egocentric speech. Correlating first order Harvard III Psycho-sociological Dictionary categories with Piaget's egocentric speech and the second order categories with socialized speech it was hypothesized that few or no second order content categories would differ within contrasted groups of 3-, 4-, and 5-year-old black children. A measure of structural syntactical change was also made for comparison purposes. Statistical test results confirmed this hypothesis. Computerized verbal content analysis appears to be a fruitful method for testing and studying theoretical issues and empirical research in child development. (Author/DP)