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  • Reliability
    • Refers to the consistency of the results i.e expecting any measurement to produce the same data if taken on successive occassions.
    • Observational Techniques
      • Types: natural,controlled, participant
      • Ways of Assessing
        • Inter-observer reliability-having 2 or more observers
        • observer repeat observation twice
      • Improving reliability
        • operationalised behavioural categories
        • pilot study
    • Self Report Techniques
      • e.g questionnaires, interviews
      • Ways of Assessing
        • test retest reliability=test given to people and again the second time, under a short interval
      • Improving reliability
        • ensure test items and instructions are unambiguous
    • Experiments
      • consists of an IV and DV
      • Ways of Assessing
        • Dv measured using rating scale or behavioural category or test retest reliability
      • Improving reliability
        • Standardisation of procedures
    • Types of Reliability
      • Internal Reliability
        • consistency within measures of measurement
        • Ways of Assessing
          • split half method=test randomly divided into 2 halves, then established by pps scores being similar on both halves
      • External Reliability
        • consistency between use of a method
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