When you go to the cosmetologist for a facial wax, she will press her finger against the part of your face she has just pulled hair out of. The resulting decrease in your discomfort is best accounted for by the _________ theory.

Which of the following physical changes is likely to be initiated by the sympathetic division of the autonomic nervous system?

a. Increased pupil dilation b. Decreased heart rate c. Increased salivation d. Increased digestion

Dr. Hyper treated 20 patients using a new therapeutic procedure

An outside observer rated the children's activity level on a laboratory task before and after the treatment; 80% of the children decreased their activity level following treatment, and Dr. Hyper concluded that the procedure was highly effective. In Dr. Hyper's experiment, what is the independent variable? a) The children's diagnosis as hyperactive or not b) The presence of the observer c) The new therapeutic procedure d) The children's activity level