In a study published in the American Psychological Association's Journal of Personality and Social Psychology, 227 college students were asked to rate their level of aggression and indicate their level of exposure to video game violence. The study found that students who reported playing more violent video games engaged in more aggressive behavior [Source: Journal of Personality and Social Psychology (2000) 78:772-790]. Which of the following conclusions can you make on the basis of this study? Playing violent video games is associated with more aggressive behavior. Violent video games make students more aggressive. Nonviolent video games make students less aggressive. There is no relationship between violent video games and aggression.
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The authors of the paper "Popular Video Games: Quantifying the Presentation of Violence and its Context" (Journal of Broadcasting \& Electronic Media [2003]: $58-76$ ) investigated the relationship between video game rating- suitable for everyone (E), suitable for 13 years of age and older (T), and suitable for 17 years of age and older (M) - and the number of violent interactions per minute of play. The sample of games examined consisted of 60 video games-the 20 most popular (by sales) for each of three game systems. The researchers concluded that video games rated for older children had significantly more violent interactions per minute than did those games rated for more general audiences. a. Do you think that the sample of 60 games was selected in a way that makes it reasonable to think it is representative of the population of all video games? b. Is it reasonable to generalize the researchers' conclusion to all video games? Explain why or why not.
Rashmi S.
Researchers are curious whether violent video games increase acts of violence. They ran a study where they observed 30 children during and after school; those who played First Person Shooters were significantly more likely to act aggressively on the playground, either with physical actions (e.g., shoving; pushing) or through forceful verbiage/communication (yelling; threatening; using harsh language towards others), r= .7, p<.05. Can the researchers conclude that violent video games increase violence in children? Why or not?
Supreeta N.
Many people believe that there is a negative relationship between the amount of time students play video games each week and their GPA. x 10 3 0 2 5 4 7 y 1.5 2.4 3.2 3.5 2.7 3 2.1 Find the correlation coefficient. Round your final answer to four decimal places. r = Write the regression equation below. Round all numbers to four decimal places. Å· = Using the data shown above, predict a student's GPA when the student plays video games for 15 hours each week. Round your final answer to two decimal places. What percentage of variation in GPAs can be explained by the number of hours students play video games each week? Round your final answer to two decimal places.
Madhur L.
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