What is the null hypothesis of the above example?
a. Prisoners are more aggressive than college students.
b. College students are more aggressive than prisoners.
c. There is no relationship between stress levels and groups.
d. Prisoners and college students are not different in aggression levels.
D
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Language comprehension relies on:
a. both bottom-up and top-down processing b. neither bottom-up nor top-down processing c. bottom-up processing alone d. top-down processing alone
Teenagers generally want to stay up later in the evening and sleep longer in the morning than children do. This may be due to____
a. ?increased amounts of norepinephrine in the central nervous system b. ?decreased autonomic nervous system activity c. ?the effects of marijuana d. ?changes in melatonin secretion
Regarding lifestyle diseases and behavioral risk factors, which of the following statements is FALSE?
a. Seventy percent of all medical costs are related to just six of the major behavioral risk factors. b. Smoking is currently the main cause of preventable deaths in the United States. c. A person who is overweight at age 20 can expect to lose five to 20 years of life expectancy. d. All people who exhibit behavioral risk factors have a general disease-prone personality type.
Al-Farabi is credited with systematizing three disparate fields: psychology, education, and ____
a. cosmology c. mathematics b. physics d. astronomy