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Message Design

Some of the most widely used theories used to create messages to motivate health-related behavior change include N. K. Janz and M. H. Becker's health belief model (HBM), M. Fishbein and I. Ajzen's theory of reasoned action (TRA), A. Bandura's social cognitive theory (SCT, also known as the social learning theory), Ajzen's theory of planned behavior (TPB), and K. Witte's extended parallel process model (EPPM). These five frameworks help guide health message design because the variables can be used collectively rather than individually. While each framework may have challenges related to application with specific topics and audiences, they all incorporate four sets of variable relationships.

How Messages Are Sent and Received

It is helpful to understand the process of sending and receiving messages. The process is based ...

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