Animals have developed taste aversions with delays between ingestion and illness as long as: • A. 15 minutes. • B. 8 hours. • C. 24 hours. • D. 72 hours. Question 12 of 20 5.0/ 5.0 Points Experiments on US devaluation and US revaluation suggest that __________ associations are formed in typical classical conditioning with a CS and US. • A. context-US • B. context-CS • C. S-S • D. S-R Question 13 of 20 5.0/ 5.0 Points A problem with stimulus substitution theory is that: • A. the CR sometimes has components that the UR does not. • B. the UR sometimes has components that the CR does not. • C. Both a and b • D. Neither a nor b Question 14 of 20 5.0/ 5.0 Points Studies on classical conditioning of the immune system have shown that: • A. a neutral stimulus can become a CS that weakens immune system activity. • B. a neutral stimulus can become a CS that strengthens immune system activity. • C. presentation of a CS can increase the activity of natural killer cells. • D. All of the above Question 15 of 20
0.0/ 5.0 Points Suppose a child is knocked down by a large dog and develops a fear of the dog. Later the child frequently sees this dog in front of a neighbor’s house, and develops a fear of the neighbor’s house. This example illustrates: • A. second-order conditioning. • B. generalization. • C. discrimination. • D. spontaneous recovery. Question 16 of 20 5.0/ 5.0 Points Research on the effectiveness of different types of stimuli has shown that: • A. taste stimuli are always easier to condition than visual stimuli. • B. taste stimuli are always easier to condition than visual stimuli when the US is illness. • C. taste stimuli are always easier to condition than visual stimuli when the US is shock. • D. None of the above Question 17 of 20 5.0/ 5.0 Points Of the following, which is usually NOT involved when systematic desensitization is used to treat a phobia? • A. An emetic • B. Progressive relaxation • C. Fear hierarchy • D. Imagination Question 18 of 20 5.0/ 5.0 Points Pavlov's theory of spontaneous recovery includes the assumption that newly learned associations: • A. are more durable than older associations. • B. are more fragile than older associations. • C. replace older associations.