Psychology Unit 1

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Self-Report

Psychology: Self-Report Unit 1

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Questionnaires

Questionaires/Interviews  

Strengths

  • Quick and easy 
  • large sample

Weaknesses

  • Low Response rates
  • Social desiribility bias
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Rating Scales

Rating Scales (e.g: Likert Scale)

Strengths

  • Tells how strongly participant feels = detailed
  • Quantitative

Weaknesses

  • People may respond to towards middle to appear less extreme 
  • Not Qualitative
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Fixed Choice Questions

Fixed Choice Questions (yes or no)

Strengths

  • Easy to meassure and quanity 
  • Quantitative

Weaknesses

  • Participants may feels desired option not available
  • not qualitative
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Sampling

Oppurtunity Sampling- People who are available at the time

Strength 

  • Quick and inexpensive
  • if natural experiment = researcher has no control

Weaknesses

  • Biased Sample (researchers social group)
  • Participants may decline leading to only one particular participant = sample bias
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Random Sample

Random Sample - every member of population has an equal chance of being selected

Strength 

  • Representative
  • high population validity 

Weaknesses 

  • Time consuming
  • Adverts may only leed to particular participants 
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Voluntary Sample

Voluntary Sample - Participants had volunteered to be part of the study 

Strength 

  • Quick and relativily easy 
  • Produce wide varity of participants 

Weaknesses

  • May not be representative (e.g: more obedient)
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