PSYC 200 Lecture 19: Chapter 8 and Terrizi et al Study 2

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Convey strength and direction of relation btn outcome and a particular predictor. Can directly compare s in mr to see which predictor is most influential. Inclusion of more than 1 predictor in reg equation: typically improves accuracy of prediction (not always, can accommodate categorical and continuous predictors. College success predicted by high school gpa, financial aid, and familial support: more complete" understanding of college success. Standard: all predictors entered at once. Stepwise: predictors entered one at a time, beginning with the one most strongly correlated with outcome. Hierarchical: researcher decides order of predictor entry - guided by theory/specific hypothesis, versatile/flexible approach. In mr, we can look at effect of separate variables and their interaction on a particular outcome. Specific analysis used to examine a sig. Purpose: replicate and extend findings of study 1, specific interest- effect of disgust on prejudicial attitudes. Less conservative: disgust less prejudice: explore specificity of disgust manipulation (general attitudes v. contact subscale)

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