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Test Two Notes

Test Two Notes - Chapter 8 Between Subject Designs Two main...

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Chapter 8: Between Subject Designs Two main categories of experimental designs o Between subjects : Different participants receive each level of the IV Does watching tv violence increase aggression? (2 groups) experimental group: 2 hours of Saw Control Group: 2 hours of mister Rogers Measure aggression and compare groups to see if they are different Completely Randomized Design (CRD): 1 IV with 2 levels Two groups of P’s Random assignment to groups Ex: caffeine on memory- randomly divide Ps into two groups (A-3cups of coffee; B-0cups of coffee)- measure memory for each group and then compare them Multilevel completely randomized design: 1 IV with 2+ levels More than 2 groups of P’s Random assignment to groups Ex: caffeine on memory- randomly dive Ps into 3 groups (A-3 cups, B-1 cup, C-0 cups) Between Subjects factorial Design: 2+ IV’s Examine the effect of more than one IV on the DV 2+ groups of Ps Random assignment to groups Ex: interested in the effect of violent TV and heat on levels of aggression
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Two CRD’s can be converted to one Factorial design Can combine two IV o Makes things faster o Can examine interaction between IVs FACTORIAL DESIGN Effect of TV violence Violent Non-violent Effect of Heat Cool Room Group 1 Group 3 Hot Room Group 2
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