Biographical Research — Life History and Biographical Method

Biographical research is a full methodology that encompasses sampling, data collection, and interpretation across the whole life or a substantial life episode; it typically uses life-history interviews and may incorporate documentary sources. Narrative analysis is primarily an analytic technique that can be applied to any text — a single interview extract, a media account, or a policy document. Biographical research almost always involves narrative analysis as its analytic component, but narrative analysis does not require biographical data.

Sample sizes in biographical research are typically very small — often one to five participants in intensive life-history studies, and rarely exceeding twenty in comparative biographical work. The criterion for adequacy is not statistical power but informational richness and analytic depth. A single well-constructed life history can sustain a substantial study if the participant's trajectory is sufficiently informationally dense for the research question.

This tension is intrinsic to biographical research and should be managed rather than eliminated. Practices that help include: presenting substantial narrative excerpts so readers can assess the data independently; documenting the researcher's own biographical position and how it shapes interpretation; using member checking selectively (returning interpretations to participants is valuable but can also constrain legitimate analytic moves); and engaging peer debriefers who can challenge the interpretive logic.

They overlap substantially but have different disciplinary homes and emphases. Oral history, rooted in history and archival practice, focuses primarily on recording and preserving first-person accounts of historical events and periods. Biographical research, rooted in sociology and social science, focuses on the individual life as an analytic unit for understanding social processes. Both use in-depth interviewing; biographical research places greater emphasis on narrative structure, identity construction, and social-theoretical interpretation.

Ethical rigour requires: obtaining fully informed consent that specifies how data will be stored, used, and reported; designing anonymisation before data collection (composite identifiers, altered locations, changed names); discussing with participants whether and how they wish to be identified in publications; and planning long-term data storage in line with institutional requirements. Because biographical details are inherently identifying, standard pseudonymisation is often insufficient and must be combined with contextual changes.