Longitudinal studies
- 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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