Interpretivism uses smaller data samples

The argument

Using fewer sources is a methodological choice that has merit in academic research, this argument holds, rather than a compromise forced on a researcher — though it notes that it can also be the only choice available, since some research topics do not have enough evidence to support a large sample. The first merit claimed is focus. A smaller body of material allows for a more targeted approach: the researcher can select sources for their relevance to the question rather than for their availability, and can pursue a specific problem rather than whatever a large dataset happens to cover. The second is the reallocation of effort, and it is the argument's central point. Research time is finite, and it divides between collecting evidence and interpreting it. Working with fewer sources allows the researcher to spend more time interpreting the evidence — time that could otherwise have been spent collecting sources. For an interpretivist philosophy, where the object is to understand meaning rather than to measure frequency, that is the trade most worth making: depth of reading is what produces the findings, so hours moved from collection to interpretation are hours moved to where the value is generated. A third advantage is disciplinary. Keeping the evidence base narrow makes it possible to avoid entering the realm of other academic disciplines, which would necessitate expert knowledge in a different academic field. Historians, for example, could incorporate archaeological evidence in their research, but may be ill-equipped to interpret it — so a wider sample can lower the quality of interpretation even as it raises the quantity of material. Because a smaller sample buys focus, interpretive depth, and competence over one's own evidence, the argument presents interpretivism as a strong research philosophy.

Premises

Counter-arguments

The argument defends a practical convenience and treats it as a philosophical merit. Sample size is a methodological choice available within any research philosophy — positivist work uses small samples in case-control and single-case designs, and interpretivist work sometimes analyses very large bodies of text — so it does not characterise interpretivism, which is defined by its claims about meaning, subjectivity and the interpretive nature of social knowledge rather than by how many sources it consults. Several of the reasons given are not merits at all. That fewer sources may be "the only choice if the research topic doesn't have enough evidence" describes a constraint, not an advantage. That time saved in collection can be spent on interpretation is a trade-off whose value depends on the interpretation being well founded, which a thin evidence base makes harder rather than easier. And avoiding other disciplines' evidence in order to sidestep the need for expertise inverts a weakness into a virtue: the risk of misreading archaeological material is an argument for collaboration or training, not for declining to consult relevant evidence, and deliberately leaving available material unexamined is difficult to defend as good practice. The standard interpretivist case for small-n work is quite different and much stronger — depth, thick description, and understanding rather than generalisation, with credibility established through reflexivity, saturation and triangulation. Resting instead on economy of effort concedes the ground on which the positivist sibling position attacks it.

Rejecting the premises

[Rejecting P1] Sample size is a methodological choice available within any research philosophy — positivist work uses small samples in case-control and single-case designs — so it does not characterise interpretivism, which is defined by its claims about meaning and interpretation. [Rejecting P2] Insufficient available evidence is a constraint rather than a merit, and avoiding other disciplines' evidence to sidestep the need for expertise argues for collaboration or training rather than for leaving relevant material unexamined. [Rejecting P3] The stronger interpretivist case rests on depth, thick description and understanding over generalisation, with credibility secured through reflexivity, saturation and triangulation — grounds this argument replaces with economy of effort.