The importance of environmental influences on intelligence is provided by evidence that A mental similarities between adopted children and their adoptive families increase with age. B identical twins reared together have more similar intelligence scores than fraternal twins reared together. C the average IQ scores of children are generally within one standard deviation of their parents' IQ scores. D general intelligence scores predict performance on a variety of complex tasks. E the intellectual development of neglected children in impoverished environments is often depressed. 24 of 45 2