Bob is learning how to treat his headaches by paying attention to an EMG while he is relaxing and tightening his muscles. Which relaxation technique is he using?

As an infant, Stephanie received many penicillin injections from the doctor. When she later saw a photographer in a white coat that was similar to the doctor's coat, she started to cry. This is an example of_____

a) instrumental learning. b) observational learning. c) classical conditioning. d) habituation.

In a study on alcohol and aggressive behavior, subjects are randomly assigned to one of

two groups. One group receives real alcohol while the other group receives tonic water which tastes identical to real alcohol. Neither the subjects nor the researchers know which group got the real alcohol until after the study is completed. This study is designed as a ______ placebo-control study. a. single-blind c. longitudinal b. double-blind d. correlational