Although psychology had a brief—and rather dramatic—foray into the legal system early in this century, it was only after World War II that psychology started to systematically permeate the legal system. Building on the interest psychologists and other social scientists had on the law, education and training in the areas of psychology and law/criminal justice has undergone considerable growth and development over the past two decades. The authors discuss the early developments and current models of this education and training. Implications of the increased interest and training in psychology and law/ criminal justice, and directions for future developments in these areas, also are explored.