During the teen years, the quality and quantity of sleep time tends to
a. increase.
b. decrease.
c. become more stable.
d. show no change from childhood.
B
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Matteo is studying for the SAT. Based on the research conducted by Karen Allen, you might expect that Matteo will experience the least stress-related arousal if he studies:
a. with his best friend b. alone c. with his dog in the room d. with a group of friends who have already taken the test
The stimulus for a sound is a wave of pressure created when an object vibrates or when compressed air is released
Indicate whether this statement is true or false.
Buss argued that gender differences exist because
a. the human brain was evolving into its present form, while males and females assumed different work roles within their cultures; thus, these differences were encoded into the evolving brain. b. men and women faced different adaptive problems related to reproduction, over the course of evolution, and this produced inherited strategies. c. male and female hormones affect the brain differently. d. Western culture socializes males and females to adopt different attitudes and behavior patterns. e. of consistently different levels of testosterone and estrogen.
The conditions that a researcher wishes to prevent from affecting the outcome of the experiment are the
__________variables. a. independent b. dependent c. extraneous d. control