Moderators and Mediators

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ExamAnxiety: Block Diagram Study Time β = .397, p < .001 β = .169, p = .184 Exam Perform. β = -.709, p < .001 β = -.321, p = .012 Exam Anxiety Study time influences exam performance indirectly, via the mediator of exam anxiety Report p-values and effect sizes (β, R 2 ) CPSY501: moderators and mediators 14 Oct 2011 32
MedGraph: mediation tool Paul Jose's MedGraph: ● Tool to visualize the mediation relationship ● http://www.victoria.ac.nz/psyc/paul-josefiles/medgraph/medgraph.php Sobel test: one way to check partial mediation ● Kristopher Preacher and Andrew Hayes ● http://people.ku.edu/~preacher/sobel/sobel.htm ● May have problems with power CPSY501: moderators and mediators 14 Oct 2011 33
Page 1 and 2: Moderators and Mediators 14 Oct 201
Page 3 and 4: Moderators in Regression Definitio
Page 5 and 6: Asking good RQs RQ1: Does working
Page 7 and 8: Testing for Moderation Centre the
Page 9 and 10: Example: Peattie, 2004 Birgitte Pe
Page 11 and 12: Testing Moderation in Regr. Analyz
Page 13 and 14: Peattie: Coefficients Table Coeffic
Page 15 and 16: Peattie: Using ModGraph Select “
Page 17 and 18: ModGraph: Results CPSY501: moderato
Page 19 and 20: Outline for today Moderators ● A
Page 21 and 22: Mediators: Block diagram Predictor
Page 23 and 24: Testing for Mediators Are all thre
Page 25 and 26: ExamAnxiety: Correlations Correlati
Page 27 and 28: Main effect: Results Model Summary
Page 29 and 30: Predictor to Mediator: Results Mode
Page 31: Full Model: Output Model Summary Ch
Page 35 and 36: Moderation or Mediation? Does the
Page 37 and 38: MacArthur vs. Baron+Kenny Both rel
Page 39 and 40: Outline for today Moderators ● A
Page 41 and 42: Methodology Participants: 32 of 50
Page 43 and 44: DVs: Therapeutic Outcomes Depressi
Page 45 and 46: Correlation: Check Assumptions NO
Page 47 and 48: Results: Late-Therapy LCPP adds onl

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