The idea that conversations with older companions foster language development is most like the theory of

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

If children emerge from the first few years without __________, the seeds are sown for adjustment problems

A) independent toileting habits B) sufficient trust in caregivers C) sufficient oral stimulation D) a sense of shame