Professor Smith studied the effect of giving either two, four, or eight pellets of reward to rats that ran a maze. He measured how fast they ran, and how many wrong turns they made. How many levels of the independent variable did he have?
a. one
b. two
c. three
d. can't tell
c
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Indicate whether the statement is true or false
Which of the following is NOT one of the four (4) factors that influence the addictive potential of a drug?
a) how much discomfort is experienced when the drug is discontinued b) how many areas of the brain are impacted by the drug c) how fast the effects of the drug are felt d) how long the pleasurable effects last
Stage 4 sleep is marked by ______ waves
a. alpha c. delta b. beta d. theta
Tallulah is a psychologist who plans to study the directionality of the relationship between socioeconomic status and intelligence. She would like to determine whether socioeconomic status predicts intelligence or if intelligence predicts socioeconomic status. Which of the following research designs would allow her to examine this question?
A. Measure IQ in a group of young children whose parents have the same socioeconomic status and then measure the children's IQ again when they are adults. B. Measure IQ in a group of adults with similar socioeconomic status. C. Measure IQ in a group of adults and assess whether their current socioeconomic status is different from their parents when growing up. D. Identify a group of children with the same IQ and socioeconomic status and give them IQ tests each year until they reach adulthood.