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COM546 : Frameworks and Theories: Diffusion and Adoption. Kathy E. Gill 27 January 2009. Theories (recap) (1/2). Theories (recap) (2/2). Two Theories of Mediated Communication. Shannon-Weaver “Transmission model” or “ hypodermic model Osgood & Schramm
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COM546 : Frameworks and Theories: Diffusion and Adoption Kathy E. Gill 27 January 2009
Two Theories of Mediated Communication • Shannon-Weaver • “Transmission model” or “hypodermic model • Osgood & Schramm • “Circular model” that stresses the social natureof communication
Linear innovation-diffusion theory The process by which aninnovationiscommunicatedthrough certainchannelsover timeamong the members of asocial system. Rogers, 1995, page 5
Elements • Innovation • Social system • Time • Communications channels
Innovation • An idea, practice, or object that is perceived as new by an individual or other unit of adoption
Communication • A process in which participants create and share information with one another in order to reach mutual understanding
Time • Source
Social System • A set of interrelated units that are engaged in joint problem-solving to accomplish a common goal. • Members or units of a social system may be individuals, informal groups, organizations, and/or subsystems.
Innovation-Decision Process • The mental process through which an individual passes : from knowledge to forming an attitude toward the innovation (adopt, reject)
Rogers: Five steps of adoption • Knowledge • Persuasion • Decision (adopt or reject) • Implementation • Confirmation
Critical Mass • Rogers (1995) : "the critical mass occurs at the point at which enough individuals have adopted an innovation so that the innovation's further rate of adoption becomes self-sustaining.”
Adopter categories • Innovators • Early adopters • Early majority • Late majority • Laggards
Forecast: US Household Technology Adoption, 2005-2010 Forrester Reports. July 2005, Data Overview “The State Of Consumers And Technology: Benchmark 2005”
The Five-Year Forecast: Household Devices, Access July 2008 “Benchmark 2008: Forecast Growth Of Devices And Access In The US”
The Five-Year Forecast: Personal Devices July 2008 “Benchmark 2008: Forecast Growth Of Devices And Access In The US”
More than 55% of households will have a DVR by 2011? Source: Forrester’s North American Consumer Technology Adoption Study 2006 Benchmark Survey
Technological Innovations • Hardware - the tool that embodies the technology as a material or physical object. • Software - the knowledge base for the tool
For additional thought … • Increasing capacity w/out adding wires (telegraph). Parallels today? • Grey v Bell …. Jobs v Gates? …. ? v Google? • What is today’s “railroad” sector? • Price models: Bell’s renting the phone, IBM’s renting the mainframe, cellphone contracts … what do they have in common?
Thinking About Rogers and Christensen … we’ll talk about disruptive technologies
Credits • Presentation by Kathy E. Gill, kegill@u.washington.edu, @kegill CC share-and-share alike, non-commercial use • “S-curve” from http://www.ofcom.org.uk/research/cm/cm05/overview05/keycomms/