In recent years, the study of the self has been concentrated in the areas of self-esteem, individual differences in self-relevant cognition, and the processes of self-relevant cognition. To validate understanding of the individual difference dimensions of public and private self-consciousness and self-esteem, college students (N=101) completed the Self-Consciousness Scale and two self-esteem measures, the Rosenberg Self-Esteem Scale (S-E) and the Texas Social Behavior Inventory (TSBI). In addition, they generated lists of self-relevant knowledge in nine categories. Analysis of the results indicated the the correlation between private self-consciousness and the grouped-category measure of private self-knowledge production was near zero, as was the correlation between public self-consciousness and the measure of production of public self-knowledge. The measure of social anxiety correlated negatively with all but one measure of knowledge productivity and positively with all the measures of overlap for the self-knowledge measures. The data pattern for social anxiety was approximately a mirror image of the patterns for the two self-esteem measures, indicating that the social anxiety measure has some properties of a self-esteem scale with reversed direction of measurement. Self-relevant knowledge production was better predicted by measures of self-esteem and social anxiety than by measures of public and private self-consciousness. (NRB)