David J. Johnson is a social-cognitive psychologist who employs computational models to study the psychological processes that underlie decisions. He has used this approach to understand decisions where law enforcement have mistakenly shot unarmed civilians. His work in this area currently focuses on how race and dispatch information influence the accuracy of these decisions, as well as the basic cognitive processes that produce them.
David is currently a postdoctoral researcher in the Department of Psychology at Michigan State University. He is also an advocate for open science. Data and materials from his experiments may be found here.