In operant conditioning, extinction occurs because:

Brad was almost hit by a speeding truck as he crossed the street. his heart began to race, and he felt extremely afraid as he jumped out of the way in just enough time to avoid the truck. a psychologist who supports the theory of emotion would claim that based on the arousal brad experienced, he appraised the situation and then labeled his racing heart as fear. a. james-lange b. cannon-bard c. schachter two-factor d. evolutionary

Which a hammer strikes a compound formed by covalent bounds

The acts as the internal clock that controls sleep and waking cycles. a. hypothalamus b. pineal gland c. ovaries d. thyroid