Several decades ago, the gap between the IQ scores of African Americans and White Americans was estimated to be about 15 IQ points. Research from 2002 suggests that in 30 years that gap closed by about ________ points

Research on social problem solving shows that

A) without adult intervention, quarrels among preschoolers often result in physical violence. B) social conflicts have a negative impact on children's problem-solving skills. C) children who get along well with agemates tend to hold biased social expectations. D) children with peer difficulties often misinterpret others' behaviors.

Language areas in the cerebral cortex

A) are found exclusively in the left hemisphere. B) are fully lateralized at birth. C) develop as children acquire language. D) are not fully functional until adulthood.