Experimental methods

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  • Created by: caitlinca
  • Created on: 11-03-17 13:38
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  • Experimental methods
    • Natural experiments
      • IV is unplanned
        • Occurred because of naturally occurring event
        • Quasi experiments
          • Ps are often matched in some way
          • No control condition
      • No control over variables
        • Makes pinpointing a causal relationship more difficult
    • Laboratory experiments
      • Control
        • Extraneous variables are held constant so the DV can only be due to the manipulation of the IV
        • Also accomplished by the use of a control group and 1< experimental group
      • Randomisation
        • Ps are randomly allocated to conditions
        • Stimuli can be randomly ordered
      • Direct manipulation of an independent variable
        • Effect of IV is measured by DV (dependent variable)
    • Quasi experiments
      • Ps are often matched in some way
      • No control condition
    • Field experiments
      • Direct manipulation of an independent variable
        • Effect of IV is measured by DV (dependent variable)
      • Take place in a natural environment
        • Natural experiments
          • IV is unplanned
            • Occurred because of naturally occurring event
          • No control over variables
            • Makes pinpointing a causal relationship more difficult
        • Ps are often unaware of participation

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