________ refers to an excess of body fat in relation to lean body mass

__________ studies show that infants learn and retain a wide variety of information just by watching objects and events, sometimes for much longer time spans than in operant conditioning studies

A) Deferred imitation B) Accommodation C) Habituation D) Assimilation

In New Guinea, tribes that had been isolated for centuries were found that they

A. had a large number of sophisticated language systems. B. had languages that were more primitive than languages of most non-isolated societies. C. communicated by hand signals but not verbal language as we know it. D. had just a few language systems that were all governed by similar rules.