Doris works a stressful job, has difficulty falling asleep, and she often wakes up early. After several weeks, she agrees to participate in a sleep study to determine whether she has insomnia
It is likely that the results of her sleep study show Doris:
a. spends less time sleeping as people who do not complain of insomnia.
b. is lacking in the substances that promote and maintain sleep.
c. spends as much time sleeping as people who do not complain of insomnia.
d. has an excess of arousal-producing neurochemicals.
Answer: C
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If an independent-groups t test is equal to zero, then:
a. the two sample means differ significantly. b. the two sample means do not differ significantly. c. there is something wrong with the calculation. d. the two population means differ significantly.
Pavlov's research on digestion demonstrated
a. the utility of electric shock as a stimulus. b. that animals can learn to respond to a previously neutral stimulus. c. that hunger is a more powerful drive than thirst. d. that digestion begins in the mouth when the food is mixed with saliva. e. the power of experimental ablation in research.
When Reggie takes his baby son, Tyson, to his workplace for the first time, Reggie’s assistant abruptly picks Tyson up and walks around the office. Tyson cries and reaches out for Reggie. Tyson is expressing __________
A) sadness B) stranger anxiety C) separation anxiety D) disgust
When people speaking to infants use repetition, short words and sentences, high and varied pitch, and long pauses, they are using what kind of speech?
What will be an ideal response?