Twenty volunteers are brought into a sleep laboratory in the evening. Ten are allowed eight hours of sleep while the other ten are only allowed two hours of sleep. In the morning, all 20 subjects are tested for their reaction time in a driving simulation program. For this experiment, the reaction time in the simulation program is the
a)
independent variable.
b)
dependent variable.
c)
confounding variable.
d)
random variable.
b)
dependent variable.
The reaction time is the response observed in the subject. It is not manipulated by the experimenter
You might also like to view...
How are the "empty nest" and "refilling" related?
a. They refer to the same concept. b. Empty nest precedes refilling. c. Refilling precedes the empty nest. d. Refilling causes the empty nest.
Our physiological state during REM sleep consists of ____
a. ?slow and relaxed heart rate, blood pressure, and breathing; and twitching of postural muscles b. ?rapid or irregular heart rate, blood pressure, and breathing; and twitching of postural muscles c. ?slow and relaxed heart rate, blood pressure, and breathing; and paralysis of postural muscles d. ?rapid or irregular heart rate, blood pressure, and breathing; and paralysis of postural muscles
The onset of puberty has decreased 3-4 years in the last century, probably due to:
a. improved medical care and living conditions b. changes in the genetic makeup of people c. poor diets that are high in junk foods d. the emphasis on strenuous daily exercise and sports
The trichromatic theory of color vision applies to the retina, where three different types of cone have been found with each cone containing a different type of
a. iodopsin. b. rhodopsin. c. phosphene. d. stereocilia.