Research to support a genetic component to ADHD indicates that the regulation of ____ may be involved

a. dopamine c. testosterone
b. serotonin d. benzoate

A

Psychology

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The manipulated variable in an experiment is the ____ variable

a. independent b. dependent c. extraneous d. confounding

Psychology

The mnemonist Mr. S. had a such an exceptional memory that he had to devise ways to

a. forget. b. remember accurately with his eyes open if prohibited from closing his eyes. c. learn more mnemonics. d. study meaningless words and random digits.

Psychology