A researcher wants to assess the effects of varying amounts of alcohol on ratings of perception of friendliness. Three groups of people are given either one, two, or three beers to drink. Three more groups of people are given either one, two, or three non-alcoholic beers to drink. Then, all participants are shown a series of pictures of people's faces and are asked to rank the perceived
friendliness of each face on a scale from 1 to 10. Each face was presented for 5 seconds. In this experiment, the dependent variable is:
A) the number of groups.
B) whether or not the beer contained alcohol.
C) how long each participant was allowed to look at each face.
D) the rating of perceived friendliness.
D) the rating of perceived friendliness.
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The mean of the ______ is equal to the population mean.
A. distribution of samples B. deviation of samples C. distribution of population D. standard deviation
All of the following are true of 2-year-old children except that they a. imitate the behavior of adults without true understanding of the intentions of the adults. b. use a more effective way to attain a goal than a less effective way that they saw an adult do.c, they mimic the actions of others to maintain social interaction
c. copy adult behavior that is often arbitrary.
By age 8 children are better able to play video games. This is most likely due to increases in
lateralization of which one of the following? a. Visual acuity b. Association areas c. Spatial perception d. Stamina
Raymond has designed a study to examine sexual arousal among male and female college students to erotic or nonerotic movies. A simple main effect of the type of movie would analyze whether arousal level is different for
A. male and female viewers. B. movies when the viewer is a male and when the viewer is a female. C. viewers of erotic and nonerotic movies. D. males and females when the movie is erotic or nonerotic.