Recent research concerning the Type A behavior pattern has indicated that one of the behaviors of the pattern may be more critical than the others as a predictor of heart disease. This behavior pattern is marked by

For the author, the major factor causing emotional stress was

a. fear of sexual attack b. taking a shower c. boredom d. brutal and unjust guards

A new parent is transitioning her baby from milk to food. In order to assess possible allergic reactions, she first introduces green beans for one week, then introduces peas for one week

Then introduces sweet potatoes, and so forth with each vegetable. This is an example of a) changing one variable at a time b) repeated measures. c) extraneous variables. d) baseline measurements.