The debate over whether intelligence is largely fixed or malleable is not over. What is most exciting, however, is the research from social psychology, developmental psychology, cognitive psychology, and neuroscience that is highlighting just how malleable intelligence is. Differences in achievement among racial, ethnic, or gender groups have…

In this meta-analysis of 75 studies on more than 3,888 children in 19 different countries, the intellectual development of children living in children's homes (orphanages) was compared with that of children living with their (foster) families. Children growing up in children's homes showed lower IQ's than did children growing up in a family…

The law of intelligence is presented in test independent form. Mental abilities, physical brain size, and infant motor capacity follow the same law of growth from birth to adolescence. Mental growth is independent of race, "SES" or the Flynn effect. The vitality of the mental age scale calls for a reexamination of Wechsler's deviation IQ. This…

The question of reliability in the intellectual assessment of young children is cause for concern among developmental psychologists and diagnosticians. The issue of reliability is confounded by normal variability in skills during early childhood, by the problem of consistency across time of age-appropriate assessment measures, and by the selection…