______ exists when a test measures consistently what it is trying to measure; ____________ exists when it actually measures what it is supposed to measure

Researchers DeCasper and Spence asked pregnant mothers to read The Cat in the Hat every day for the last six weeks of their pregnancies. After birth, babies showed a preference for ______

hearing their mothers read The Cat in the Hat. seeing their mothers read The Cat in the Hat. hearing their mothers read any book. seeing their mothers read any book.

The best way of understanding the relationship between genetic and environmental influences on the development of intelligence is to conclude that:

a. genes are much more important than environment b. the environment is much more important than genes c. genetic and environmental factors interact and influence each other d. genetic and environmental factors operate independently, but both influence intelligence development