Research Methods

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In an experiment a researcher changes one thing and sees what it does to something else

The independent variable is the thing that is manipulated 

The dependent variable is what is measured 

Extraneous variables 


  • Temperature 
  • Noise 
  • Time of day 
  • Participant 
  • Age 
  • Gender 
  • Motivation 
  • Intelligence 
  • Hunger 
  • Mood 

Situational variables 

  • Time of day 


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