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Complex Experimental Designs_10.24.11

# Complex Experimental Designs_10.24.11 - Complex...

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Complex Experimental Designs November 10, 2010

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Factorial Designs Factorial designs are designs with ____________________________ The term “factor” refers to an independent variable One factor > one-way design Two factors > two-way designs Three factors > three-way designs
Notation Lowest number you will see is 2 Each number refers to an independent variable ______________________________ Number of numbers tells you how many independent variables there are To calculate the number of experimental groups, _________ the numbers across

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Notation 2 x 2 is the simplest factorial design 2 independent variables Each IV has two levels 4 experimental groups What about a 3 x 2? What about a 3 x 2 x 2?
2 x 2 Example Does frustration affect how children respond to violent vs. nonviolent cartoons? IV1 = cartoon type (violent or nonviolent) IV2 = prior state (frustration or non- frustration) DV = _______________

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2 x 2 Example Frustrated, Violent cartoon Not frustrated, Violent cartoon Frustrated, Non-violent cartoon Not frustrated, Non-violent cartoon
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Complex Experimental Designs_10.24.11 - Complex...

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