_______________ famously observed volunteers masturbating or having sex while specialized equipment monitored their physiological responses

A) Masters and Johnson
B) Meston and Buss
C) Alfred Kinsey
D) Sigmund Freud

Answer: A
Rationale: Starting in the 1950s, researchers William Masters and Virginia Johnson described the human sexual response cycle based on their observations of people having sex. Participants were monitored with heart rate and blood pressure equipment, as well as to more peculiar devices such as the penile plethysmograph or vaginal photoplethysmograph, which are designed to measure blood flow to the genitalia in men and women, respectively.

Psychology

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