Longitudinal studies

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  • Created by: greggs25
  • Created on: 19-03-15 21:11
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  • Longitudinal studies
    • Collin Lacey spent four years studying pupils at high town grammar school.
    • Longitudinal studies have a high attrition rate, which means that people can drop out at anytime, thus reducing the validity of the study.
    • Demographic changes in the research population may mean that the original sample is no longer representative. for example migration may cause the proportion of both ethnic groups to change.

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