Internal vs. External Validity in UX-Study Design

Summary: Internal validity ensures that your study design does not favor any particular condition or response, while external validity is about a naturalistic study setup and choice of participants.

by

Topics:

Internal vs. External Validity in UX-Study Design

 to watch NN/g videos

Related Article

Internal vs. External Validity of UX Studies

Poorly designed qualitative or quantitative research may produce invalid results. Avoid encouraging certain responses or behaviors and make sure that your study conditions and participants are representative.

Video Author

Raluca Budiu is Senior Director, Data Strategy, at Nielsen Norman Group, where she uses her data-analysis expertise to drive strategic decisions. She also serves as editor for the articles published on NNgroup.com. Raluca has coauthored many NN/g reports, as well as the book Mobile Usability. She holds a Ph.D. from Carnegie Mellon University.

Learn More

Subscribe to the weekly newsletter to get notified about future articles.

Videos