This study reports the contribution of maternal general ability, some developmental milestones, early motor development, language development, and experiences, to intelligence as measured at age 5. Results confirm that there is a relatively low level of prediction of intelligence. (Author/KC)

The present investigation examined the ability of the Inventory of Home Stimulation (STIM) to predict changes in relative mental test performance of children between 6 months old and 36 months of age. The six STIM subscales were used in discriminant analysis to classify infants into three groups (gainers, stable, losers) in terms of their change…

A total of 23 children were observed from age 1 to 3 in order to assess day-to-day learning environments and their effect on intellectual development. Observers used a time-sampling technique to code behaviors for one hour on three to five separate occasions during each of four periods: age 12-15 months, 18-21 months, 24-27 months and 30-33…

This paper examines evidence supporting the hypothesis that environment differentially affects intelligence in a sex-specific manner. The current position that environment and heredity contribute interactively to intelligence obscures the greater vulnerability and exposure of males to environmental influences and the reciprocal lack of equivalent…