Term
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Definition
-overall effect of an IV
-row + column means
eg the "girls get prettier" study Gladue& Delaney
2 main effects, sex + time |
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Term
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Definition
| -effect of one IV depends on the level of another IV |
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Term
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Definition
-at least one IV - between subjects
-at least one IV - within subjects
eg effectiveness of psyc program
IV 1 = treatment
IV 2 = pre/posttest (2x2) |
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Term
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Definition
-one IV - subject variable (P)
-one IV - environmental/manipulated variable (E)
-if E = within subjects --> mixed P x E
eg gender and spatial ability study
IV 1 = gender (P)
IV 2 - instructions (E) (2x3) |
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Term
| causation and P x E factorial designs |
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Definition
-can determine causation only if main effect for E
-no determination if main effect for P
-no determination if interaction |
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Term
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Definition
| -aptitude (P) treatment (E) interaction |
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Term
| analysis of factorial design |
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Definition
-N factor anova (N = # of IVs)
-F for every main effect + every interaction
-simple effects analysis --> each level of one factor with each level of another |
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