Critical thinkers should be willing to take the word of an expert without asking questions
Indicate whether the statement is true or false
F
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You are watching a rat pressing a lever in a Skinner box to obtain food pellets. The rat is pressing the lever at a very high rate and does not stop, even when a food pellet is delivered. In this example, the reinforcement schedule that is in place is MOST likely
a. a fixed-interval schedule. b. a variable-ratio schedule. c. a fixed-ratio schedule. d. a variable-interval schedule.
In signal-detection theory, the position of the criterion is determined by
a. the decision process. b. the sensory process. c. the stimulus intensity. d. the mean of the signal distribution.
Alpha motor neurons receive input from
A. neurons in muscle spindles only. B. neurons in muscle spindles and Golgi tendon organs. C. spinal interneurons and neurons of the brainstem and motor cortex. D. neurons in muscle spindles and Golgi tendon organs, neurons of the brainstem and motor cortex, and spinal interneurons.
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.