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3.Intro_to_ANOVA.2012 - Introduction to ANOVA Bring...

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Introduction to ANOVA Bring calculator on Thursday Reading in Howell Recap from last lecture Review t-test Hypothesis testing Type I and II errors Introduction to ANOVA “Moral Blame” Study
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Threat: Regression Test-retest reliability is not perfect Error in measurement not experimenter error random variation Example: Student gets a top grade on a test. Next test score isn’t as high. Why?? A very strong threat when you use extreme scores to create different groups.
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Lewandowski & Aron (2004) 4.79 4. Novelty/Challenge High Low High Low Arousal 0 2 4 6 8 10 12 Actual Results Arousal Mean Attractiveness 4.79 4.02 4.64 3.68
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Lewandowski & Aron (2004) 4.79 4. Novelty/Challenge High Low High Low Arousal 0 2 4 6 8 10 12 Actual Results Arousal Mean Attractiveness 4.79 4.02 4.64 3.68 Overall 4.41 4.16 Overall 4.71 3.58 Marginal Means Cell Means Significant main effect for arousal No main effect for novelty/challenge No Arousal x Novelty/Challenge interaction
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Introduction to ANOVA Recap from last lecture
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