Tess agrees to sleep in an artificial setting for three nights so that researchers can obtain information about her brain and muscle activity during sleep. She is taking part in a research method called _________

John Watson believed that psychology should only involve the study of _________

a) behavior b) the mind c) the brain d) consciousness

The positive impact of breast feeding probably reflects

a. nutritional factors b. increased physical and social contact between nursing infant and mother c. evolutionary history of the species d. all of the above