Authenticity criteria are criteria for determining the goodness, reliability, validity, and rigor of qualitative research. They may be contrasted with trustworthiness criteria on foundational grounds. Trustworthiness criteria were developed in response to conventional quantitative and statistical concerns for rigor, including internal validity, external validity (or generalizability), reliability (or replicability), and objectivity. Each of the four dimensions of trustworthiness parallels one of the four rigor dimensions of quantitative methods. Trustworthiness criteria, therefore, may be said to be foundational because they respond to the foundations of conventional scientific research.