The criterion of 'reliability' in qualitative research is equivalent to which of the following criteria in quantitative research?

In the trustworthiness scheme the quantitative criterion paired on this axis is internal validity, whose qualitative counterpart is credibility.

Internal validity concerns whether the study's inferences about relationships genuinely hold within the data.

External validity is instead the parallel of transferability, dealing with generalization to other settings.

Objectivity is the parallel of confirmability, about findings being free of the researcher's bias.

Reliability is the parallel of dependability, about the consistency and auditability of the process.

Guba and Lincoln proposed credibility, transferability, dependability and confirmability as the four trustworthiness criteria.