WJEC A-Level Sociology 601-5237-0
Culture and the Social Construction of Culture
Socialisation and Its Agencies
Socialisation and Identity
Families and HouseholdsAcquiring Culture
Youth CulturesAcquiring Culture
Research Methods: Primary and Secondary
Sampling, Ethics and Practical Issues
Key Concepts and Theories of Research
EducationUnderstanding Society
MediaUnderstanding Society
ReligionUnderstanding Society
Crime and DeviancePower and Control
Health and DisabilityPower and Control
World SociologyPower and Control
Applied Methods: Designing Sociological Research
Social Inequality: Evidence and Patterns
Theories and Explanations of Inequality and Stratification
Research Methods: Primary and Secondary
Longitudinal studies
- 3 things to know
- AS Unit 2 and A2 Unit 4
Overview
Longitudinal study, cohort study and sample attrition.
What you need to know
Answer each one before you reveal it.
What is a cohort study?
Explain how a longitudinal study can distinguish an age effect from a generational effect.
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is a longitudinal study?
Model answer
A study that follows the same group of people over an extended period, collecting data from them repeatedly.
- 2
What is a cohort study?
Model answer
A longitudinal study of a group who share a defining characteristic, most often being born in the same period.
- 3
Give one advantage of longitudinal research over a cross-sectional survey.
Model answer
It shows how the same people change over time, so cause and effect can be traced in sequence rather than inferred from one snapshot.
- 4
Explain how a longitudinal study can distinguish an age effect from a generational effect.
Model answer
Because the same people are followed as they age, changes in them can be separated from differences between one generation and another.
- 5
What is sample attrition?
Model answer
The loss of participants from a study over time through death, relocation or refusal to continue.
- 6
Explain why attrition threatens the representativeness of a longitudinal study.
Model answer
Those who drop out often differ systematically from those who stay, so the surviving sample no longer matches the original population.
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