1. Introduction
   
   
2. Faulty Research Designs
   1. One-Group After-Only Design
   2. One-Group Before-After (Pretest-Posttest) Design
   3. Nonequivalent Posttest-Only Design
   
   
3. Requirements of True Research Designs
   
   
4. Pretesting Participants
   
   
5. True Research Designs
   1. After-Only Design
      1. Between-Participants After-Only Design
         1. Simple randomized participants design
         2. Factorial design
      2. Within-Participants After-Only Design
   2. Before-After Design
   
   
6. Choice of a Research Design
   1. Research Question
   2. Control
   3. Between-versus Within-Participants Design
   
   
7. Summary

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