In general, the word "valid" means _____

a. reliable c. not confined to bed
b. legitimate d. false

B
Valid ideas are true, warranted, or legitimate.

Psychology

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Evidence suggests that we consolidate our memories of recent life events during ________ sleep.

a. Stage 1 b. Stage 2 c. Stage 3 d. Stage 4 e. REM

Psychology

Correlational studies are useful in determining

a. cause-and-effect relation. b. whether two variables are related. c. if the double-blind procedure is effective. d. the reliability and validity of research results. e. if confounded variables are present.

Psychology