______ is a fatal central nervous system disorder whose effects do not appear until middle adulthood

The binge-purge syndrome is:

A) anorexia nervosa. B) bulimia. C) nephritis. D) obesity.

Skinner (1957) argued that children learn language via instrumental conditioning. In contrast, ___ argued that it would be impossible for children to learn language because it is too complex

a. Saffran b. Piaget c. MacWhinney d. Chomsky