Longitudinal Inequality Tracker: understanding how inequality develops over time
For Cambridge OCR A Level Sociology, students need to understand both research methods and social inequalities. Component 02 asks students to think about sociological enquiry in the context of social inequality and difference, including class, gender, ethnicity and age. It also expects students to consider research design, longitudinal studies, interpretation of data, social policy, and the way inequality affects life chances.
The Longitudinal Inequality Tracker is designed to help students see that inequality is rarely a one-off event. It is often a process that builds over time. A student leaving school with few qualifications, a young carer balancing unpaid care with education, or an older worker made redundant may all experience disadvantages that affect income, employment, housing, health, education and social networks later in life.
This activity turns the idea of a longitudinal study into an interactive timeline. Students follow six fictional individuals over twenty years and track how their life chances change. At each stage, they consider what has happened, which form of inequality is most visible, and what a sociologist could learn from studying the same person over time.
Why longitudinal research matters
A longitudinal study follows the same people, households or groups over time. This is useful in sociology because it allows researchers to look at change, continuity and turning points. Instead of taking one snapshot of inequality, longitudinal research can show how early disadvantages can accumulate, how opportunities can open up, or how major life events such as redundancy, caring responsibilities, migration, disability, education or family support can shape later outcomes.
The Centre for Longitudinal Studies’ 1970 British Cohort Study follows around 17,000 people born in England, Scotland and Wales in a single week of 1970, making it a useful example of how sociologists can study lives across decades. Understanding Society is another major example: it describes itself as the largest longitudinal household panel study of its kind and follows households to examine life changes and stability.
Key research links
British cohort studies are useful for studying how childhood circumstances, education, family background and early life experiences shape adult outcomes. This links closely to debates about social mobility and whether disadvantage is reproduced across generations.
Goldthorpe’s work on social mobility is useful because it shows how class structures shape people’s chances of moving between social positions. Goldthorpe argues that class structure is an important context for understanding mobility patterns.
Marmot’s work on health inequalities is useful because it connects health to the conditions in which people are born, grow, live, work and age. The Marmot Review argued that reducing health inequalities requires action across wider social conditions, not just healthcare.
Bourdieu’s ideas about capital help students understand why inequality is not only about money. Economic capital, cultural capital and social capital can all shape a person’s life chances. A student with family support, confident educational language and useful social networks may be better placed to navigate education and work than someone without those resources.
How to use the activity
Students begin by selecting one fictional profile. They then move through the timeline from Year 0 to Year 20. Each stage reveals changes in six life-chance indicators: income, employment, housing, health, education and social networks. Students then answer questions about what the timeline shows, which theory explains the pattern best, and how longitudinal research could be evaluated.
The activity works particularly well after students have learned the basics of research methods because it brings together AO1 knowledge, AO2 application and AO3 evaluation. Students are not just defining longitudinal research; they are applying it to class, gender, ethnicity, age, disability, migration and work.
Longitudinal Inequality Tracker
Follow six fictional individuals over twenty years. Track changes in income, employment, housing, health, education and social networks, then evaluate what longitudinal research can reveal about inequality and life chances.
Tyler: Year 0
Life-chance indicators at this stage
Scores run from 1 = very limited to 5 = strong advantage.
| Current position | Main inequality shown | Possible turning point |
|---|---|---|
Quick check: evaluating longitudinal research
Select the strongest evaluation point.
Write your own analysis
Write 4–5 sentences explaining how this person’s life chances changed over time. Include one theory and one evaluation of longitudinal research.
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