A review of the information provided by rural sociologists and agricultural extensionists regarding the adoption of new and/or improved farm practices in Nigeria in order to determine their contribution to the transfer of technology to farmers indicates that a great deal of attention had been paid to communication variables and to personal and social characteristics of the farmer; however, psychological factors, the farm organization, community norms, and institutional factors have almost been ignored. Although the research results of the studies reviewed are inconsistent, the following observations emerge: (1) in general, farm size, formal education, participation in formal organizations, leadership status, and level of living (measured in terms of the number of selected household items possessed) are positively associated with adoption of new and/or improved farm practices; (2) the most often used sources of farm information are radio and extension agents, with radio far exceeding extension agents; and (3) exposure to radio farm programs and extension contact are positively related to adoption. Agricultural economists and rural sociologists should be involved in choosing innovations to be recommended to farmers, and, most importantly, farmers should be involved in the selection of innovations to be researched or introduced to farmers. (Author/CM)