In assessing your patients for risk of heart disease, you would be most concerned about discovering which of these Type A behavior characteristics?

Which of the following is NOT an example of preparedness in conditioning?

a. A child learns that brushing his teeth always results in praise from his parents. b. Birds quickly learn to avoid drinking water that is the same color as water that previously made them ill. c. Baby ducklings learn to recognize their mother's sight and call as they follow her around, and soon will follow nobody but their mother. d. Rats learn to avoid drinking water with a salty taste that previously made them ill.

The systematic elimination of extraneous variables other than those you are interested in can be eliminated in what research design?

a. qualitative research. b. correlational research. c. experimental research d. longitudinal research.