Psychology Research Methods

  • Created by: Rita
  • Created on: 18-10-20 20:05
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  • Psychology Research Methods
    • Experiments
      • Laboratory
        • Highly controlled conditions
        • Participants are Randomly allocated to Independent variable groups
        • Cause and Effect - Able to establish if a variable cased change int he other variables
        • Ethics - Deception makes consent difficult (Because participants are aware they are being watched they may change behaviour if not deceived)
      • Field
        • Outside Laboratory
        • Behaviour is measured in natural environment
        • Ethics - Deception making it harder to get consent may cause them distress
        • Ecological Validity - Can generalise to real life behaviour
      • Natural
        • How independent variable that's not manipulated by the researcher effects the dependent variable
        • e.g. No tv in St Helen then its introduced observing the change in behaviour of the local children
        • Ethics - The researcher is not manipulating the situation
        • Cause and Effect - Hard to establish which variable effected the others (or other factors)
      • Quasi
        • Can't Randomly allocate participants
        • Independent variable is a participants feature
        • e.g. gender (naturally occurring)
        • Ecological Validity - Less artificial so more likely to generalise to real life
        • Cause and effect - Hard to establish which variable effected the others
    • Experiment Design
      • Independent Group Design
        • Each group dose a different task
        • To avoid improvement from everyone doing all the tasks (Confounding variable)
        • No Order Effect - No one gets better or worse from practice or bordem
        • Participant Variable - The difference between the participants  in each group affecting the results (e.g. higher IQ)
      • Repeated Measure Design
        • All participants do all the tasks
        • Participant Variable - Everyone doing the same tasks so there individual differences should not effect results
        • Order effect -If all participants do the tasks in the same order  they could all improve on the second task
      • Matched Pair design
        • Participants are matched on important variables (e.g. gender / age / IQ)
        • The pairs are then Randomly allocated to a task
        • No order effect - Different people in each condition
        • Number of participants - twice as many people as repeated measures


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