Alex, a freshman in college, wants to know how many of her
dormmates have tried marijuana, so she decides to survey everyone on her floor. Despite rumors to the contrary, the results suggest that fewer than ten percent of her classmates have tried the drug. What is the most likely explanation for her findings?
A) People often distort their answers or fail to tell the complete truth when surveyed.
B) Her dormmates did not understand the question.
C) Alex did not calculate the findings correctly.
D) Surveys are not an acceptable means to gather new information.
Answer: A
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The gate-control theory suggests that incoming pain sensations may be blocked at the
a. location of the injury. b. spinal cord. c. thalamus. d. cortex.
In a comprehensive review of studies comparing clinical and statistical prediction, Grove et al. (2000) reported that
a. statistical prediction was superior in about 50% of the studies. b. statistical prediction was superior in none of the studies. c. statistical and clinical prediction were roughly equal in almost all of the studies. d. clinical prediction was superior in about 25% of the studies.
Melatonin is ______.
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Men are more likely to help strangers, but women are more likely to help friends
Indicate whether this statement is true or false.