One thing that's true about correlational studies is that they ____
a. identify third variables that account for associations among variables
b. tell us the direction of causality between two variables
c. can indicate the degree to which two variables are related
d. are not dependent on the validity of research instruments
c
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If one's partner is free of sexually transmitted infections, it is safe to swallow the male ejaculate
a. True b. False Indicate whether the statement is true or false
The nuclei for most of the cranial nerves are located in the ____
a. cerebral cortex b. hypothalamus c. midbrain d. pons and medulla
When stress continues over an extended period of time, the body's resources may reach their limit. This is the stage of
a. resistance. c. exhaustion. b. alarm. d. combat preparation.
In one classic experiment, rats were given meals of chocolate chip cookies, salami, cheese, bananas, marshmallows, milk chocolate, peanut butter, and fat. The rats
a. lost weight because of the nutritional imbalance in the foods provided. b. overate, gaining about three times as much weight as rats fed laboratory rat chow. c. did not gain or lose weight, since sweetness and fat content only encourage humans to overeat. d. chose to eat only the salami, cheese, and bananas.