The United States government defines poverty as which of the following income levels for a family with at least one child?
A) $10,448
B) $15,825
C) $18,440
D) $41,840
B
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An important thing about r2 is that it represents a measure of
a. causal relationships. b. accountable variability. c. the correlation. d. statistical significance.
When a researcher rules out plausible alternative explanations, the researcher is establishing internal validity
a. True b. False Indicate whether the statement is true or false
The areas of the cerebral cortex that combine and process information are called __________ areas
a. primary b. association c. perceptual d. semantic
All of the following are sources of evidence for a sensitive period for language acquisition except that a. children who experience social isolation in childhood rarely acquire more than a tentative mastery of language. b. the later someone is exposed to a new language, the more difficult it is for him or her toacquire it
c. the later someone is exposed to his or her first language, the more difficult it is for him or her toacquire it. d. young children with significant left-hemisphere damage usually never learn to speak normally.