• We always try to build controls that minimize or eliminate confounds/threats to validity into our studies.
  
  
• The most general control in experimental research is adequate preparation of the research setting.
  
  
• Extraneous variables can be controlled by carefully selecting who is in our study through inclusion and exclusion criteria and by randomly assigning participants to experimental groups.
  
  
• Single-blind and double-blind procedures can help to control for experimenter bias.
  
  
• Control groups in between-groups experimental designs should be as similar as possible to experimental groups.
  
  
• Counterbalancing in as effective control in within-subjects designs.

Test your knowledge of this workshop by taking the Workshop Quiz.