Before revision: Refining the hypothesis Although by the mid-1970s extensive data supported the existence of a knowledge gap among low and high socioeconomic status individuals, Donohue, Tichenor, and Olien (1975) sought to refine the hypothesis to determine under what conditions the knowledge gap might be attenuated or even eliminated.To this end, they examined survey data on national and local issues from probability samples of 16 Minnesota communities gathered between 1969 and 1975.
After revision: Although by the mid-1970s extensive data supported the existence of a knowledge gap among low and high socioeconomic status individuals, Donohue, Tichenor, and Olien (1975) sought to refine the hypothesis to determine under what conditions the knowledge gap might be attenuated or even eliminated.To this end, they examined survey data on national and local issues from probability samples of 16 Minnesota communities gathered between 1969 and 1975.