Psychology - Sampling Techniques (methods)

This is a mind map of the 5 research methods that AQA require you to study at AS level. Each technique comes with its advantages and disadvantages as well as a short definition.

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  • Sample Techniques
    • Systematic Sampling
      • Every nth person from the target population
      • Reduces Researcher Bias
      • Generalisation
    • Opportunity Sampling
      • Taking participants which are available
      • More convenient
      • Costs less
      • Easy
      • Unfair proportion
      • Dishonest
    • Volunteer Sampling
      • Participants who see an advert and decide that they want to take part
      • Minimal Input from researcher
      • Quick and Easy
      • Bias
      • Participants will have keen/helpful characteristics (may affect results)
    • Random Sampling
      • Participants are randomly chosen from a register (EG) using an electronic genarator
      • No researcher bias
      • Time consuming (giving every member of the target audience a number)
      • Unrepresentative
    • Stratified Sampling

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