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Research Methods

Research Methods. Independent & Dependent Variables. Independent Variables. The independent variable is the thing the psychologist changes or manipulates when conducting an experiment. This is to try and discover a cause-effect relationship between the IV and the dependent variable.

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Research Methods

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  1. Research Methods Independent & Dependent Variables

  2. IndependentVariables • The independent variable is the thing the psychologist changes or manipulates when conducting an experiment. • This is to try and discover a cause-effect relationship between the IV and the dependent variable.

  3. An example of an independent variable: whether participants in a memory experiment were asked to make a story out of a list of words (to help them memorise the words) or given no instructions on how to memorise the words Example…

  4. Dependent Variables • The name given to the variable in experimental research that measures/ observes any change in animal or human behaviours as a result of their exposure to the independent variable.

  5. As a consequence we can discover if the change or manipulation of an independent variable has caused, or had an effect on how we think, feel, or behave; this change being measured as the dependent variable

  6. Example… The dependent variable for a memory experiment could be: • The number of words recalled

  7. Test… • You must decide which of the following are IVs or DVs… • Giving ppts either alcohol or juice • Ppts ability to drive safely • Whether ppts memorised words at the bottom of the ocean or on the beach • The number of anagrams solved in 2 minutes • The attention span of a gold fish • The time of day

  8. Now you need to have a go… • See IV – DV activities in the Science Pack 

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