Chapter 12:
Key Terms and Issues


KEY TERMS

Factorial experiment

Main effect (overall main effect)

Simple main effect

Interaction

Cross-over (disordinal) interaction

Ordinal interaction

Replication factor

Stimulus set

Systematic replication

KEY ISSUES

  1. Why do researchers use factorial designs?

  2. What is an interaction?

  3. How can you make sense of a study reporting an interaction?

  4. What are the possible outcomes of a factorial design?

  5. How can new research problems be tackled by converting a simple experiment into a factorial design?

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