When a research team selected participants for a study of mother-infant play, they chose a socioeconomically and racially/ethnically diverse sample. By doing this, the researchers will increase their study's

a. viability
b. reliability
c. internal validity
d. external validity

D

Psychology

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For adolescents, working has been linked to

A) higher self esteem. B) delinquency. C) higher school grades. D) less substance use.

Psychology

145. Musicians, who practice special motor skills throughout their lives, have larger than average cerebellums

Indicate whether this statement is true or false

Psychology