PPT Slide

Complex Factorial Experiments

1. Introduction

2. Design of factorial experiments

3. Classification of factorial experiments

4. Main effects and interaction effects

5. Issues in the interpretation of interaction effects:

(a) Testing theories

(b) Resolving contradictions in prior research

(c) External validity of main effects

(d) Identifying “relevant” independent variables

(e) Ceiling and floor effects

6. Treatments x Subjects designs

(a) Aptitude-treatment interaction

(b) Resolving causal status of subject variables

7. Statistical analysis of factorial experiments

(a) Main effects

(b) Interaction effects

(c) Follow-up comparisons

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