Michelle is gently stroking Trey's arm as they are watching television. This very light, fluttery touch will be most likely to activate the _____ corpuscles on Trey's skin

The Type A behavior pattern is a significant predictor of __________

a) mental illness. b) coronary heart disease. c) cancer. d) respiratory illnesses.

Answer the following statement(s) true (T) or false (F)

The independent variable must remain constant across all the groups of an experiment.