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10/12 notes.

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+Factorial Studies
+* Interaction Effect: Occurs when two or more independent variables combine to produce an effect over and above their main effects
+PxE Designs
+* P = Person; Subject Variable
+ * This is essentially a correlational analysis, and thus we cannot determine causation with correlation
+* E = Environment; Manipulated Variable
+* When you get a main effect of "E", researchers like this because it suggests the power of the environment is strong enough to produce the same behavior in different groups of people.
+* Interactions in PxE are more interesting

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