When one attempts to recreate a retrieval environment that is as similar to the initial encoding, or learning, environment as possible, he or she is making use of the principle of:

The category of mental disorder with the highest prevalence is _____ disorders

a) mood b) psychotic c) attention deficit d) anxiety

Mary arrives home to find her son washing the dirty dishes left from his party the night before. When she discovers his first-semester grade report on the table and sees that he got straight A's,

Mary rewards him by relieving him of the unpleasant task of finishing the dishes. Which operant process does the example illustrate? a. positive reinforcement b. negative reinforcement c. extinction d. punishment