His major theoretical contributions came in his 1932 book, Purposive Behavior in Animals and Men, and in a series of papers in the Psychological Review, "The determinants of behavior at a choice point" (1938), "Cognitive maps in rats and men" (1948), and "Principles of performance" (1955).
Tema peamine teoreetiline panus avaldus tema 1932. aastal ilmunud raamatus "Purposive Behavior in Animals and Men" ning ajakirjas Psychological Review ilmunud artiklites: "The determinants of behavior at a choice point" (1938), "Cognitive maps in rats and men" (1948) ja "Principles of performance" (1955).