Unit 3 Psychology: Sleep - Stages of sleep evaluation

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  • Evaluation of the stages of sleep
    • Individual differences
      • Patterns of sleep vary.
      • Lacks generalisability.
    • Universality
      • Universal characteristics.
      • High in population validity.
    • Artificiality
      • Lacks ecological validity.
      • Unrealistic setting.
      • Reductionist.
      • Lacks mundane realism.
      • Lacks generalisability.
    • Objective evidence
      • EEG, EOG, EMG.
      • Objective.
      • Less subject to bias.
      • Easier to compare.
    • Sample size
      • Small sample size.
      • Only volunteers.
      • Unrepresentative.
    • Self-report
      • Vulnerable to bias.
      • Lacks validity.
      • Unfalsifiable.

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