Jay Earley is an American computer scientist and psychologist with a diverse career spanning both fields. Early in his computer science career, he invented the Earley parser, a significant contribution to computational linguistics and parsing theory. Later in his career, Earley transitioned to clinical psychology, where he specialized in group therapy and Internal Family Systems Therapy (IFS). His work in this area has focused particularly on addressing the inner critic and other internal psychological dynamics. Beyond his clinical practice, Earley has developed the Pattern System, a personality framework, and created Self-Therapy Journey, a web application designed to support psychological healing and behavior change.