1 University of Virginia, School of Law, Charlottesville, VA 22903, USAgreg.mitchell@law.virginia.edu; https://www.law.virginia.edu/faculty/profile/pgm6u/1191856.
2 Psychology Department and Wharton School, University of Pennsylvania, Solomon Labs, Philadelphia, PA 19104, USA. tetlock@wharton.upenn.edu; https://www.sas.upenn.edu/tetlock/bio.
Until social psychology devotes as much attention to construct and external validity as it does to internal validity, the field will continue to produce theories that fail to replicate in the field and cannot be used to meliorate social problems.