In qualitative research, the criterion that parallels internal validity is:

In qualitative research, credibility is the criterion that parallels internal validity.

Transferability parallels external validity, judging how far findings apply to other settings.

Dependability parallels reliability, concerning the stability of findings over time.

Confirmability parallels objectivity, ensuring findings stem from data rather than researcher bias.

Together these four form Lincoln and Guba's framework of trustworthiness.

Credibility is often strengthened through techniques such as member checking and triangulation.