In operant conditioning, behavioral change is brought about by the manipulation of

An individual develops intellectual disability due to a disorder called PKU. What do we know about this?

a. The individual has excessive myelination. b. The disorder inhibits the formation of myelin in the brain. c. The myelin travels into the soma and destroys the neuron. d. The myelin covers the dendrites and stops the communication process.

Chandra was getting ready to take a midterm exam, and she took an antihistamine drug that has caused her physiological arousal level to increase to a very high level. Based on what is known about the link between arousal and performance, you should predict that Chandra will:

a. do worse on the exam because of the increase in her level of arousal b. do better on the exam because of the increase in her level of arousal c. not do any differently on the exam, even though her arousal level has increased d. have trouble concentrating on the exam and may become frustrated or angry