The degree to which human intelligence can be improved by psychological and educational means will depend largely upon the level of analysis accepted as representing intelligence. Training and structured learning can enhance achievement in the form of knowledge and skills. Traditional Intelligence Tests (IQ) are fairly broad samples of…

Birth order effects on intellectual performance show both positive and negative results. Considers the intellectual aspects of siblings' changing environments, explaining that birth order and family size effects depend crucially on the age at which children are tested. Within-family data conceal patterns of aggregate effects that are revealed by…

The growth model of intelligence; i.e. intelligence is the product of genetics plus environment (I.Q.=G+E), is discussed and questioned. If the growth model is discarded, formulating the problem of the development of intelligence in different ways and thinking of different possible technologies for changing intelligence can begin. The child…

Reviews the current theories concerning individual differences in cognitive functioning. While some argue that heredity places a genetic cap on intellectual development, others emphasize the dynamic interrelationship between cultural and environmental factors. Concludes that intelligence is more complex than the heredity advocates allow. (MJP)

Project Head Start was created during the heady, idealistic days of the mid-1960s. The idea for Head Start, a preschool program for disadvantaged children, emerged from the observation that, on average, poor and minority children arrive at school already behind their peers in the intellectual skills and abilities required for academic achievement.…