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8 Cards in this Set
- Front
- Back
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Advantages of Multivariate/Factorial Designs
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-focus on the exploration of “multicausality”
-Outcomes have multiple causes, we should study multiple IVs and their interactions within a single study -“it depends” permeates both our everyday and our scientific language, discussions, and explanations -the direction and extent of the influence of a particular IV “depends on” the value of the other IV -in a factorial design the interaction is a “third causal variable”, which is evaluated independently of the other two IVs |
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There are always THREE effects (IVs) examined...
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-the interaction of the two IVs...how they jointly relate to DV
-the main effect of the one IV ...how it relates to the DV independently of the interaction and the other main effect -the main effect of the other IV...how it relates to the DV independently of the interaction and the other main effect |
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Main effects involve the comparison of...
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marginal means
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Simple effects involve the comparison of...
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cell means
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Interactions involve the comparison of...
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simple effects
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How to identify Main Effects?
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difference between the marginal means of that IV (ignoring the other IV)
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How to Identify Simple Effects
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cell means differences between
conditions of one IV for a specific level of the other IV |
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Interactions
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Patterns of data that include interactions can be identified and described using the “it depends” approach.
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