Source A Dr Chen, a sociologist at Beijing Normal University, published the results of a three-year study into the lives of migrant factory workers in south...

Part (a): The research method where a sociologist joins a group and takes part in their everyday life [2 marks]

The method is participant observation [2]. In participant observation, the researcher immerses themselves in the daily life of the group they are studying, joining in their activities and routines to gain a first-hand understanding of their social world.

Part (b): From Source A, two research methods used by Dr Chen [2 marks]

The two methods are participant observation [1] and semi-structured interviews [1]. Dr Chen combined these methods by living in worker dormitories (participant observation) and conducting 120 interviews with a flexible question structure (semi-structured interviews). This is an example of a mixed-methods approach.

Part (c): One advantage of using semi-structured interviews [4 marks]

Semi-structured interviews combine set questions with the flexibility to ask follow-up questions based on the respondent's answers [1]. This allows the sociologist to explore unexpected topics in depth [1] while still ensuring that key areas are covered consistently across all participants [1], producing data that is both detailed and comparable [1].

Semi-structured interviews sit between fully structured interviews (which maximise reliability) and fully unstructured interviews (which maximise validity). They offer a practical compromise, giving the researcher enough structure to make comparisons while retaining the flexibility to pursue interesting responses.

Part (d): The term sociologists use for the degree to which research findings accurately reflect reality [2 marks]

The term is validity [2]. Research has high validity when the data it produces is a true and accurate picture of what the researcher set out to study. Qualitative methods such as participant observation and unstructured interviews are generally considered to have higher validity than quantitative methods, because they allow researchers to capture the complexity and meaning of people's social experiences.

Part (e): Using Source A, describe how Dr Chen's methods helped her gather detailed data [6 marks]

Up to six marks for a developed explanation drawing on the source.

• By living in the worker dormitories and sharing daily routines, Dr Chen experienced factory life first-hand [1] and could observe behaviours, relationships, and challenges as they naturally occurred [1].
• The semi-structured interviews allowed workers to describe their experiences of social mobility and identity in their own words [1], providing personal accounts that added depth and meaning to the observational data [1].
• Together, these methods produced rich qualitative evidence [1] about the reality of migrant life that neither method alone could have captured [1].

This illustrates the value of methodological triangulation, where using multiple methods allows the researcher to cross-check findings and build a more complete picture of the social phenomenon under investigation.

Part (f): Two practical difficulties a sociologist might face when conducting participant observation [6 marks]

Three marks for each difficulty (identification + development), up to six marks.

• Gaining access: Getting into the group can be difficult because members may be suspicious of outsiders [1], and the researcher must find a credible reason or role to justify their presence [1] without revealing the true purpose of the study [1].
• Maintaining the research over time: The researcher must sustain the observation over a long period, which is time-consuming and physically demanding [1], and may disrupt their personal life [1] or other professional commitments [1].

Part (g): Two ways in which sociologists ensure their research is carried out ethically [4 marks]

Two marks for each way (identification + description), up to four marks.

• Informed consent: Sociologists clearly inform participants about the nature and purpose of the research [1] and give them the opportunity to refuse or withdraw at any stage [1].
• Protection from harm: They ensure that the research does not expose participants to physical, psychological, or social risks [1], and they safeguard their anonymity in published findings [1].

Part (h): Two differences between structured and unstructured interviews [6 marks]

Three marks for each difference (identification + development), up to six marks.

• Structured interviews use a fixed set of predetermined questions asked in the same order to every respondent, producing standardised quantitative data [1-2]. Unstructured interviews have no set questions and allow the conversation to flow freely, producing detailed qualitative data [1].
• Structured interviews are quicker to conduct and easier to analyse statistically [1], while unstructured interviews take longer but allow the researcher to explore complex topics [1] and follow up on unexpected responses [1].

Part (i): How a sociologist might use a pilot study [4 marks]

A pilot study is a small-scale trial run of the research conducted before the main study begins [1]. A sociologist might test their questionnaire or interview questions on a small number of people to check whether the questions are clear, unambiguous, and produce the type of data needed [1]. Any problems identified, such as confusing wording or overly sensitive questions, can be corrected before the full study is carried out [1], improving the quality and reliability of the final data [1].

Part (j): Two reasons why sociologists might choose to use a mixed-methods approach [6 marks]

Three marks for each reason (identification + development), up to six marks.

• Triangulation: Combining methods allows the sociologist to cross-check findings [1], checking whether data from one method is consistent with data from another [1], which increases confidence in the validity of the conclusions [1].
• Complementary data: Using both qualitative and quantitative methods provides a more complete picture of the topic [1], with quantitative data revealing patterns and trends [1] while qualitative data captures the meanings and experiences behind those patterns [1].

Dr Chen's research in Source A is a good example: her participant observation revealed the everyday reality of migrant workers' lives, while her semi-structured interviews allowed workers to reflect on and explain their experiences, producing both observational and interview-based evidence.

Part (k): One reason why qualitative research is more valuable than quantitative research [3 marks]

Qualitative research allows sociologists to access the subjective experiences, feelings, and meanings that shape people's behaviour [1]. While quantitative data can show that a pattern exists, qualitative research reveals why people act the way they do [1], providing the depth of understanding needed to grasp the complexity of social life in a way that numbers alone cannot achieve [1].