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.
  • Participants may leave the study at some point due to illness, death, personal reasons, contributing to the study’s 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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