Infants, aged one to four months, were tested for developmental shifts in their ability to discriminate internal pattern elements in compound geometric figures. Significant recovery was seen at all ages when any pattern element was altered. No developmental differences in responsiveness to changes in internal versus external figures were observed.…

Investigated developmental change and patterns of individual differences in dimensions of infant temperament. Rothbart Infant Behavior Questionnaire (IBQ) was completed for subjects 5 times between 6 weeks and 30 months of age. Interpretable age changes were found for emotional reactivity, but not for the index of regulation (IBQ soothability).…

Compares differences between adolescent and older mothers on tests of infant motor, cognitive, social and language development; and first- and second-year abilities. Older mothers were better at predicting emergence of infant behaviors and first-year behaviors. There was no difference between groups in predicting second-year behaviors. (Author/BB)