Question

In: Statistics and Probability

Part A: Program Type, Viewing Time & Aggressive Behavior A social psychologist was interested in the...

Part A: Program Type, Viewing Time & Aggressive Behavior

A social psychologist was interested in the effect of TV violence on aggressive acts committed by 1st graders. Three first graders are randomly assigned to various combinations of the two independent variables. The first independent variable is type of TV program (cartoon vs. real). The second independent variable is amount of viewing time (15 minutes, 30 minutes, 45 minutes, or 60 minutes). After viewing the TV programming for the assigned time, the children are observed in a controlled social situation for 30 minutes. The number of aggressive behaviors exhibited by each child during the 30 minutes following viewing was the dependent variable. The number of aggressive behaviors for each 1st grader appears below.

                                                Viewing Time

Program Type          15                    30                    45                    60       

Cartoon                      0                      0                      3                      6

                                    1                      1                      5                      9

                                    2                      4                      8                   10

Real                            0                      1                      6                   10

                                    0                      1                      2                      9

                                    0                      5                      4                      8

Why did we run post hoc tests on the variable of Time but not Program?

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orchestra answered 2 years ago
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