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Many models of communication include the idea that a sender encodes a message and uses a channel to transmit it to a receiver. Noise may distort the message along the way. The receiver then decodes the message and gives some form of feedback. [1] Models of communication simplify or represent the process of communication.
In mass communication, the Hierarchy of Influences, formally known as the Hierarchical Influences Model, is an organized theoretical framework introduced by Pamela Shoemaker & Stephen D. Reese. It comprises five levels of influence on media content from the macro to micro levels: social systems, social institutions, media organizations, routine ...
In Schramm's model, communication is only possible if the fields of experience of sender and receiver overlap. [24] [25] Schramm's model of communication is another significant influence on Berlo's model. It was first published by Wilbur Schramm in 1954. For Schramm, communication starts with an idea in the mind of the source.
Communication theories vary substantially in their epistemology, and articulating this philosophical commitment is part of the theorizing process. [1] Although the various epistemic positions used in communication theories can vary, one categorization scheme distinguishes among interpretive empirical, metric empirical or post-positivist, rhetorical, and critical epistemologies. [13]
These leaders tend to influence others to change their attitudes and behaviors. The two-step theory refined the ability to predict how media messages influence audience behavior and explains why certain media campaigns do not alter audiences' attitudes. This hypothesis provided a basis for the two-step flow theory of mass communication. [9]
George Gerbner, the founder of the cultivation theory, expanded Lasswell's model in 1956 to focus "attention on perception and reaction by the perceiver and the consequences of the communication". [19] Laswell's 5W model of communication was expanded by Richard Braddock into a 7W model in his 1958 paper "An Extension of Lasswell's Formula".
Schramm's model of communication was published by Wilbur Schramm in 1954. It is one of the earliest interaction models of communication. [1] [2] [3] It was conceived as a response to and an improvement over earlier attempts in the form of linear transmission models, like the Shannon–Weaver model and Lasswell's model.
Theories that base their observations and conclusions on individual media users rather than on groups, institutions, systems, or society at large are referred to as micro-level theories. [7] Representative theories: Elaboration likelihood model; Social cognitive theory of mass communication; Framing theory; Priming theory