Gibson and walker- Methodology 

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  • Gibson and walker- Methodology
    • Ethical issues
      • psychological harm- sight of visual cliff may have caused stress to babies
      • lack of informed consent and right to withdraw was difficult as stress has already been caused.
    • validity
      • experimental v. was high as apparatus tested D.P in a safe and measurable way.
      • Eco-logical v. was low  took place in a lab so behavior was manipulated and  different to real life.
    • reliability
      • study can be repeated and other studies have shown consistency in their findings.
    • sampling bias
      • small sample was used = difficult to generalize.  however conclusions supported in a no. of different samples,


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