According to ____, human motivational forces, such as sex and aggression, are based on instincts

According to the information in the article Yoking Smokingabout operant conditioning, you say, "Sit" and

your dog sits. You give him a biscuit because you want him to sit the next time you say, "Sit." He has experienced (a) positive reinforcement (b) negative reinforcement (c) positive punishment (d) negative punishment

During middle childhood, Shannon became increasingly flexible and was able to perform cartwheels and handstands. This is probably because

A) her ligaments were not yet firmly attached to bones. B) the bones of her body had shortened and narrowed. C) she was losing "baby fat" at an increasing rate. D) her bones were strengthening while her muscles were weakening.