Which of the following ensures that an extraneous variable is just as likely to affect one experimental group as it is to affect the other group?
A. construct validity
B. randomization
C. correlation coefficient
D. operationalization
Answer: B
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Children with ADHD ____
a. often experience sleep disturbances b. may display slight growth deficits, which are likely due to medication use c. display higher rates of tic disorders than other children d. are more accident-prone than other children
True language is distinguished from the communication systems of lower animals by all of the following EXCEPT
a. infinite creativity. c. prerequisity. b. displacement. d. semanticity.
Social psychologists refer to subliminal messages as ________.
Fill in the blank(s) with the appropriate word(s).
Britney is a young infant who takes part in a conditioning study. Dr. Gibbs plays music by the Beatles and then provides Britney with brief access to sugar water (from a nipple). Eventually we could expect that