In the U.S., the most widely used illegal substance is:
A) cocaine. B) heroin. C) marijuana. D) methamphetamine.
Answer: C
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What is Spearman known for?
a. Working out the basics of reliability theory b. Developing the notion of sampling error c. Creating methods for measuring error d. Developing multivariate analysis
Limitations of case studies include
a. generalizability to other settings. b. uncertainties in interpreting archival records. c. lack of a longitudinal perspective. d. both "a" and "b"
Dyslexia has been found to be associated with ______.
A. poor instruction in the early years of schooling with respect to reading B. children who were not exposed to books or read to as infants C. abnormalities in the brain D. an increase in mathematical ability
Cohort effects are examples of
A) sociocultural-graded influences. B) age-graded influences. C) history-graded influences. D) nonnormative life events.