Ontogenetic personality changes during adulthood were evaluated using the Inventory of Psychosocial Development (IPD) to yield scores corresponding to the first six stages of Erikson's developmental theory. Of the 166 males and 161 females whose undergraduate data from 1966 were available, 76 males and 71 females returned usable data. Analyses of variance corresponding to longitudinal, cross-sectional, and time-lag comparisons were conducted on composite scores by sex and the IPD scale. Results indicated that ontogenetic change occurred for the male alumni, while results for females were due to socio-cultural changes. (Author/HLM)