vaildity and reliability

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  • Validity and reliability
    • Validity
      • Internal= whether the study has tested what it set out to test
      • External= the degree to which research findings can be generalised
        • to other settings- ecological
        • to other groups of people- population
        • over time- historical
    • Reliability
      • Internal= used to judge consistency across items in same test
      • External= how much a measure varies from one use to another
      • Inter observer= consistent results between different researchers


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