A single cycle of non-REM/REM sleep lasts about
A) 10 minutes.
B) 30–40 minutes.
C) 90 minutes.
D) 360 minutes.
E) 8 hours.
Answer: C
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Mom tells Billy that she will pay him to pull weeds from her flower garden. Because Mom is busy, she sometimes gives Billy a dime when he pulls five weeds, sometimes when he pulls 10 weeds, and other times when he pulls 20 or more weeds. The reinforcement schedule Mom is using is:
A. continuous B. fixed interval C. variable ratio D. fixed ratio
The term ____________________ refers to the repetition of vowel sounds like "oooh" and "aaah" made by young infants
Fill in the blank(s) with correct word
Which of these is a key feature of the scientific method
A. Once a hypothesis has been proved, it can never be changed. B. Experiments need not be repeatable. C. Science is moral. D. Scientific hypotheses must be testable.
Which of the following statements is true regarding social attitudes toward individuals of a homosexual orientation?
a) Women are more likely than men to express negative views toward homosexuality. b) Many Americans support the rights of homosexuals to speak out and try to influence public policy. c) Although homosexuality is not yet completely accepted in the United States, it is accepted across all other cultures. d) About three-fourths of American men and women approve of same-sex relationships.