A single auditory neuron can usually respond to a range of sound intensity of about _______ dB.

In a national survey, what percent of men reported that they had masturbated at some time in their lives?

a. 70 percent b. 85 percent c. 90 percent d. 95 percent

In Powers and colleagues (2006) research, boyfriends and girlfriends who were insecurely attached had ____ physiological stress responses when engaged in a ____ task

a. more? conflict b. less? conflict c. more? cooperative d. less? cooperative