Experimental Design

  • Created by: mayono1
  • Created on: 02-05-18 19:12
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  • Experimental Design
    • Independent Groups
      • When 2 separate groups experience 2 different conditions and then compared at the end.
    • Repeated Measures
      • Every participant takes part in both conditions and then both sets of results are compared. It guarantees that were comparing 'like with like'. Whereas an independent assesses two different groups of people.
      • A problem with this is that participants may become aware of the aims of the research, to combat this matched pairs is used.
    • Matched Pairs
      • Participants are paired based on variables relevant to the experiment. For example, on a memory test they'd be paired based on IQ score.
      • One participant is allocated to each group. This is an attempt to control of participant variables (a confounding variable).
    • Evaluation
      • Strengths
        • Independent groups
          • Order effects aren't a problem and participants are less likely to find out the aims of the exp.
        • Repeated measures
          • Participant variables are controlled and fewer participants are needed.
        • Matched pairs
          • Only has one condition so order effects and demand characteristics aren't a problem.
      • Limitations
        • Repeated measures
          • Untitled
        • Independent groups
        • Matched pairs

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