State University and which was originally published only for its application to agriculture and home economics, building on earlier research conducted there by Neal C. Gross and Bryce Ryan. Their original purpose was to track the purchase patterns of hybrid seed corn by farmers. Bohlen, Beal and Rogers together developed a model called the diffusion process and later, Rogers generalized the use of it in his widely acclaimed 1962 book Diffusion of Innovations (now in its fifth edition), describing how new ideas and technologies spread in different cultures. Others have since used the model to describe how innovations spread between states in the U.S. See also Bass diffusion model Diffusion (business) Hype cycle Lazy user model Matching person and technology model Neo-Luddism Technology acceptance model Technology lifecycle Varian Rule Notes Demographics Diffusion Innovation economics Product development Product lifecycle management Product management Science and technology studies Stage theories Sociology of culture Technological change Technology in society