In an experiment, different groups are exposed to different levels of the ______.
A. dependent variable
B. independent variable
C. treatment variable
D. confound variable
Answer: B
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Memory is:
a. a capacity for learning. b. a system that allows people to retain information over time. c. an ability of humans only. d. unchangeable.
Suppose that Jim wants to become a professional golfer. He should plan to achieve his best game at about what age?
a. age 16 b. age 18 c. age 24 d. age 30
In the coming years, QTL mapping techniques should allow us to
a) begin to map the genes of the mouse. b) no longer rely on DNA testing to identify behavior-related genes. c) trace most behaviors to single genes. d) use genetic markers as direct indicators of genotypes.
With respect to visual acuity, newborns perceive objects at a distance of 20 feet about as clearly as adults do at __________ feet.
A. 50 B. 200 C. 600 D. 900