Factorial design

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Author:
efrain12
ID:
186194
Filename:
Factorial design
Updated:
2012-11-29 22:49:05
Tags:
research
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Description:
psych
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  1. what are FActorial designs?
    experimental designs involving more thanĀ one IV
  2. WHy do we want to manipulate more than one variable?
    -to study multiple variables at once

    -we may have reason to belive that the effects of one variable on anohter areĀ conditional upon a third variable

    example: it may be the case that people behave aggressively after viewing a violent tv show depends on whether they have been provoked or threatened
  3. Types of effects in factorial research designs
    main effect and interaction
  4. Main effect
    effect of one independent variable
  5. interaction
    effect of one independent variable depends on level of other independent variables
  6. If all axis have same mean then...
    • no for both categories.
    • *if not then yes
  7. Interaction ocurs when the lines ...
    intersect
  8. Factorial designs summary
    • -enable us to test multiple IVs in the same study
    • *efficient
    • *can rule out alternative explanations
    • *can test the interactive effect of mulitple variables

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