Which of the following does not represent a common example of an extraneous variable?

a. Placebo control group
b. Nonequivalent groups
c. Differential attrition
d. Regression to the mean


a

Psychology

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Research suggests that some people are more forgiving than others. In particular, ____ tend to be especially forgiving

a. religious people b. young children c. highly educated people d. people with high self-esteem

Psychology

Rudolph is highly prejudiced against homeless people, and frequently blames them for societal problems—even when he has no evidence to support his claims. According to Rudolph, the homeless are responsible for high crime rates, high property values, high taxes, and even high movie theater ticket prices. Given this information, social psychologists would say that Rudolph treats the homeless as

________________. Fill in the blank(s) with correct word

Psychology

The effect of context on morphine tolerance would most likely be seen by differences in

a. the averages of paw-lick latencies in the same and different contexts. b. the variability of paw-lick latencies within the same and different contexts. c. number of mice tested under each context. d. both a and b

Psychology

Sonia first trains her new dog by saying “good dog!” before giving him a food treat. She then trains her dog to sit and stay, saying “good dog!” when he provides the correct behavior; while continuing to periodically provide a food treat. Sonia is using which method(s)?

a. ?operant conditioning only b. ?operant conditioning and observational learning c. ?classical conditioning and operant conditioning d. ?classical conditioning only

Psychology