IGCSE Sociology: Research Methods, Identity and Inequality (Cambridge 0495)

This guide covers Paper 1 Research Methods, Identity and Inequality, for Cambridge IGCSE Sociology 0495, Version 3, 2025–2027 series. Paper 1 is compulsory and candidates study all three of its named topics; the paper has three questions and candidates answer two, with Question 1 compulsory.

Where this fits in 0495

Research Methods is the foundational topic of the whole syllabus — the sociological methods introduced here (surveys, interviews, observation, and how sociologists evaluate evidence) are assumed knowledge for every other topic across both papers, since Sociology exam questions routinely ask candidates to suggest or evaluate a research method for studying whatever substantive topic — identity, inequality, family, education, crime — the question is actually about.

Syllabus coverage

CAMBRIDGE IGCSE SOCIOLOGY 0495 — PAPER 1 RESEARCH METHODS, IDENTITY AND INEQUALITY

• 1.1 Research Methods — the main methods sociologists use to collect data (including surveys, interviews, observation and secondary sources), and their strengths and limitations
• 1.2 Identity: Self and Society — how identity is shaped by social factors including socialisation, culture, and agents such as family, education, media and religion
• 1.3 Social Stratification and Inequality — how societies are divided into unequal groups by factors such as class, gender and ethnicity, and the causes and consequences of that inequality

How to approach it

Research Methods (1.1) rewards being able to evaluate, not just list, a method — for any given research question, practise stating one strength and one limitation of using a questionnaire versus an interview versus observation for that specific topic, since “identify a method and justify your choice” is a recurring question type. For 1.2 and 1.3, the strongest answers use named sociological concepts precisely (e.g. primary versus secondary socialisation, ascribed versus achieved status) rather than everyday language that only loosely gestures at the same idea — examiners are trained to look for correct terminology alongside accurate explanation. Because Paper 1 has a compulsory Question 1 plus a choice of one more from the remaining two, candidates should not skip revising any of the three topics entirely, even if one feels weaker than the others — being forced into an unprepared topic by the compulsory question is a common and avoidable source of lost marks. Wherever possible, link 1.2 and 1.3 together in revision too — identity and inequality are closely connected in the syllabus (for instance, how social class or gender shapes the identity someone develops), and questions sometimes reward candidates who can draw that connection rather than treating the two topics as entirely separate.

Research methods in more depth

1.1 turns on a small set of evaluative concepts that recur across almost every methods question: reliability, meaning that repeating the study would produce the same result; validity, meaning the method gives a true and accurate picture of what is actually being studied; and representativeness, meaning a sample genuinely reflects the wider population it is drawn from. As a general pattern, quantitative methods such as questionnaires and structured interviews tend to be strong on reliability but weaker on validity, since fixed-choice answers are easy to repeat and compare but may not capture what a respondent genuinely means, while qualitative methods such as unstructured interviews and participant observation tend to be strong on validity but weaker on reliability, since rich, detailed data is harder to reproduce consistently. This single trade-off explains a large share of “evaluate this method” questions, and candidates should apply it to the specific research topic given rather than reciting it in the abstract. Sampling and ethics also need precise vocabulary: a sampling frame is the list a sample is drawn from, and its absence often forces a non-random sampling method; a larger sample reduces sampling error but does not remove bias, since a biased method remains biased regardless of scale; and research ethics require informed consent, confidentiality, protection from harm and a right to withdraw, which is why covert observation – which breaches consent through deception – is defended only in cases where overt research would be impossible to carry out at all.

Identity and socialisation in more depth

1.2 builds on the idea that identity is learned rather than fixed: primary socialisation, occurring within the family during early childhood, and secondary socialisation, occurring through school, peers, media, religion and the workplace, together transmit the norms and values that shape how a person comes to understand themselves and their place in society. The distinction between ascribed status – fixed at birth, such as sex or the family a person is born into – and achieved status – earned through action, such as an occupation or qualification – is a frequently tested piece of precise terminology, as is the sociological case for nurture over nature, which rests on cross-cultural variation in behaviour and on evidence from feral children, both of which suggest that behaviour often assumed to be natural is in fact learned through socialisation.

Inequality in more depth

1.3 examines how societies divide people into unequal groups along lines including social class, gender and ethnicity, and rewards candidates who can explain both the causes and the consequences of that inequality rather than simply describing that it exists. Social class inequality is often explained through the cycle of deprivation: poor housing and diet contribute to poor health and educational underachievement, which in turn lead to low-paid or insecure work, reproducing poverty into the next generation. Gender inequality is often explained through concepts including the glass ceiling, which blocks women’s promotion into senior roles, and horizontal and vertical segregation, which concentrate women in particular occupations and at lower levels within them respectively, with causes including gender socialisation, the unequal domestic and caring burden, and workplace discrimination. Ethnic inequality is often explained through discrimination in employment and housing and institutional racism, though strong answers also note the analytical difficulty of separating ethnic disadvantage from social class disadvantage, since much of the apparent effect of ethnicity narrows once class is properly controlled for – a qualification that distinguishes a sophisticated answer from a purely descriptive one.

Official syllabus

Cambridge IGCSE Sociology 0495 syllabus for 2025, 2026 and 2027 (Version 3) — cambridgeinternational.org.