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- W4239631761 abstract "Here we explore what is known about diffusion networks and how they function to convey innovation-evaluation information to decrease uncertainty about a new idea. We begin with a discussion of opinion leadership, the degree to which an individual is able informally to influence other individuals’ attitudes or overt behavior in a desired way with relative frequency. Opinion leaders are individuals who lead in influencing others’ opinions about innovations. The behavior of opinion leaders is important in determining the rate of adoption of an innovation in a system. In fact, the S-shape of the diffusion curve occurs because once opinion leaders adopt and tell others about the innovation, the number of adopters per unit of time takes off. We explore in this chapter the role of social modeling in diffusion networks, and how interpersonal communication drives the diffusion process through creating a “critical mass” of adopters. In order to understand better the nature of opinion leadership and diffusion networks, we now examine several models of mass communication flows, roughly in the temporal sequence of their entrance on the stage of communication study. The hypodermic needle model postulated that the mass media had direct, immediate, and powerful effects on a mass audience. The mass media in the 1940s and 1950s were perceived as a powerful influence on behavior change. The omnipotent media were pictured as conveying messages to atomized masses of individuals (Katz and Lazarsfeld, 1955). Evidence of the power of the mass media was drawn from such historical events as (1) the role of the Hearst newspapers in arousing public support for the Spanish-American War, (2) the power of Nazi leader Joseph Goebbels’s propaganda apparatus during World War II in Europe, and (3) the influence of Madison Avenue advertising on consumer and voting behavior in the United States. Eventually, when more sophisticated methods were used in communication research, considerable doubt was cast on the hypodermic needle model. This survey research was directed by Paul F. Lazarsfeld of Columbia University, a pioneering mass communication scholar (Rogers, 1994)." @default.
- W4239631761 created "2022-05-12" @default.
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- W4239631761 date "2003-08-14" @default.
- W4239631761 modified "2023-10-03" @default.
- W4239631761 title "Diffusion Networks" @default.
- W4239631761 doi "https://doi.org/10.1093/oso/9780195159509.003.0011" @default.
- W4239631761 hasPublicationYear "2003" @default.
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