Diffusion of innovations is a theory that seeks to explain how, why, and at what rate new ideas and technology spread. Everett Rogers, a professor of communication studies, popularized the theory in his book Diffusion of Innovations; the book was first published in 1962, and is now in its fifth edition (2003).Rogers argues that diffusion is the process by which an innovation is communicated over time among the participants in a social system. The origins of the diffusion of innovations theory are varied and span multiple disciplines.
Rogers proposes that five main elements influence the spread of a new idea: the innovation itself, adopters, communication channels, time, and a social system. This process relies heavily on social capital. The innovation must be widely adopted in order to self-sustain. Within the rate of adoption, there is a point at which an innovation reaches critical mass. In the 1991 book "crossing the chasm", Geoffrey Moore theorizes that this point lies at the boundary between the early adopters and the early majority. This tipping point between niche appeal and mass (self-sustained) adoption is simply known as "the chasm".
The categories of adopters are innovators, early adopters, early majority, late majority, and laggards.Diffusion manifests itself in different ways and is highly subject to the type of adopters and innovation-decision process. The criterion for the adopter categorization is innovativeness, defined as the degree to which an individual adopts a new idea.
The diffusion of innovations according to Rogers. With successive groups of consumers adopting the new technology (shown in blue), its marke
