Applied research in psychology not only has contributed directly to societal advances but often has fostered basic research as well. Prominent examples are the programs directed by Yerkes in World War I to develop the Army Alpha test and several programs in World War II, including "The American Soldier" that assessed soldiers' attitudes during the…

Fuzzy trace theory posits that during development the use of verbatim information for solving transitive relationships shifts to the use of gist information. In cognitive developmental research that uses a cross-sectional design, the binomial mixture model is often used to identify such shifts. Because the binomial mixture model assumes equal task…