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  • Created by: Taylor
  • Created on: 15-03-14 16:51
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  • Experimental Design
    • Independent Measures Design
      • Using different participants for each condition of the experiment. If two groups in an experiment consist of different individuals then this is an IMD.
      • ADVANTAGE: Resulting from the different participants used in each condition - there is no problem with order effects.
      • DISADVANTAGE: Potential for error resulting from individual differences between the groups of participants taking part in the different conditions.
    • Repeated Measures Design
      • Testing the same individuals on two or more conditions
      • ADVANTAGE: Individual differences between participants are removed as a potential confounding variable. Also the RMD requires fewer participants since data for all conditions derive from the same group of participants.
      • DISADVANTAGE: Order Effects, these occur when people behave differently because of the order effect in which the conditions are performed.
    • Matched Pairs Design
      • Using different participants for each condition of the experiment but participant variables are controlled by matching pairs of variables on a key variable.
      • ADVANTAGE: Matched on variables, which are considered to be relevant to the experiment in question.
      • DISADVANTAGE: Difficult and time consuming which may be too costly to undertake.


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