With a(n) ________, a researcher can determine which variables are related to each other and how they are associated

a. correlational design
b. case study
c. field study
d. intervention study

Answer: a. correlational design

Psychology

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Ivan Pavlov rang a bell every time he fed meat powder to dogs. After repeated trials, the dogs began to salivate when they heard the bell, even if there was no food in sight. According to Pavlov, the dogs' salivation in the absence of food, following the

a. conditioned stimulus. b. conditioned response. c. unconditioned stimulus. d. unconditioned response.

Psychology

The chemical adenosine is most likely to reduce:

a. alertness. b. Stage 4 sleep. c. narcolepsy. d. REM sleep.

Psychology