Researchers have concluded that the continued debate over the heredity-environment issue concerning the nature of intelligence is nonproductive. Recent evidence demonstrates that intellectual abilities can be improved with practice. Heredity may determine upper limits of abilities within individuals, but there is considerable room left for…

Provides evidence to support the conclusion that relationships exist among Piagetian levels of intellectual development, intelligence quotient, content achievement, and inquiry skills in ninth and tenth grade biology students (N=92). (DS)