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 nonalcoholic 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 had alcohol in it.
C)how long each participant was allowed to look at each face.
D)the rating of perceived friendliness.

Question

Quizplus · Accepted Answer

The dependent variable in this experiment is the rating of perceived friendliness as it is being measured and influenced by the independent variable of the amount of alcohol consumed. The other factors mentioned (number of groups, presence of alcohol in the beer, and duration of face presentation) are independent variables or experimental manipulations.

A Researcher Wants to Assess the Effects of Varying Amounts