Theories in development represent explanations for developmental outcomes.

One of the standards for scientific belief is that that you should not accept as

scientific any claim that has no (a) research to prove it (b) famous theorist supporting it (c) testable consequences (d) all of the above

Suppose a bird fancier breeds robins to have especially large red markings on their

breasts. The gradual increase in red markings that would result is said to be due to (a) artificial selection (b) natural selection (c) sociobiology (d) short-term adaptation