experimental design Flashcards

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1
Q

what are the 3 different versions of experimental design?

A
  • independent measures
  • repeated measures
  • matched pairs
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2
Q

describe independent measures

A
  • 2 separate groups of participants that only take part in 1 condition of the experiment each
  • e.g. 1 group words/ 1 group pictures
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3
Q

describe the strengths of independent measures

A
  • avoids order effects as they only take part in 1 condition (practice/ fatigue)
  • participants will be less likely to guess the aim of the experiment as they only do 1 condition
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4
Q

describe the limitations of independent measures

A
  • more people are needed than repeated measures
  • differences between participants in the groups may affect results - e.g. age, gender, confounding variables
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5
Q

describe repeated measures

A

1 group of participants that take part in both conditions of the experiment
- e.g. 1 group words and pictures

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6
Q

describe the strengths of repeated measures

A
  • fewer people are needed
  • same participants are used in both conditions so participant variables are reduced
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7
Q

describe the limitations of repeated measures

A
  • order effects - e.g. participants might perform better(practice) or worse(fatigue) in 2nd condition
  • participants are more likely to guess the aim of the experiment and show demand charactertistics
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