The difference threshold is defined as the degree of change in a stimulus level that is required in order for a person to detect a change __________ of the time

A company that manufactures drugs to treat heart disease wants to determine if a new drug and exercise can affect cholesterol levels. What are the independent and dependent variables in this proposed study?

a) The dependent variable is exercise; the independent variables are the drug and cholesterol level. b) The dependent variable is cholesterol level; the independent variables are the drug and exercise. c) The independent variables are the drug and cholesterol level; the dependent variable is amount of exercise. d) The dependent variable is the number of heart attacks; the independent variables are the drug, exercise, and cholesterol level.

Henry is treated for hypertension by using a procedure in which he receives information about small decreases in his blood pressure presented visually on a screen. What treatment is Henry receiving?

a. cognitive coping training b. biofeedback training c. autonomic response generalization d. progressive relaxation training