6.1.13

Longitudinal Studies

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Longitudinal Studies

Longitudinal Studies

Longitudinal Studies

  • A study of people over a long period of time.
  • The aim is to record the changes over time.
Diagram
  • Longitudinal studies are useful when the researcher wants to:
    • Track changes in the individual.
    • AND track changes in the group that the individual is part of.
Advantages

Advantages

  • Researchers use longitudinal studies to monitor changes in many aspects of people's social lives such as educational achievement, employment and poverty.
  • Longitudinal studies are valid since qualitative data is collected through observations and interviews.
  • Longitudinal studies can track changes and establish trends.
Disadvantages

Disadvantages

  • They are time consuming.
  • They are costly since it is hard to keep track of the participants over time as they might move somewhere else.
  • The participants might decide at some point they don’t want any longer to be part of the study because of illness, death, personal reasons, i.e. the attrition rate.
Disadvantages cont.

Disadvantages cont.

  • If many participants decide to withdraw, the chances are that the sample will no longer be representative.
  • A non-representative sample means that the data collected cannot be used to make generalisations.
  • Participants might change their behaviour because they know they are being monitored, producing invalid data (observer effect).
Jump to other topics
1

The Sociological Approach

2

Families

3

Education

4

Crime & Deviance

5

Social Stratification

6

Sociological Research Methods

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