Knowledge and comprehension are essential components of an individual’s understanding of a health text. Whether reading a health pamphlet or watching a health campaign in the form of a public service announcement (PSA), or watching edutainment programming, individuals gain knowledge about the health topic being discussed. Knowledge, however, can only be retained if the individual can also comprehend the text or video. Often comprehension in a health context focuses on health literacy or the degree to which individuals can process and understand health information in order to make informed health decisions. Health literacy is commonly viewed in terms of the readability (e.g., reading level, complexity) of the health text or script. However, in order for individuals to gain knowledge and use that knowledge appropriately and effectively in making health decisions, individuals need to comprehend or understand what the text is conveying. Because comprehension is such an important component of gaining and using health knowledge, we must understand how we store health knowledge in memory. A schema is a mental representation that stores knowledge as interrelated pieces of information. Schemas tend to be a fairly static representation of knowledge. A mental model is a more dynamic mental representation in that we use mental models to process, organize, and comprehend incoming information. In a mental model, there is a correspondence between an external entity and the constructed mental model of that entity that allows people to counterfactually manipulate information and engage in problem solving. A situation model is the most contextualized mental representation because it encompasses a specific event or set of interrelated events. There are several ways in which to examine comprehension processes. One way is to examine the most basic level of comprehension by investigating the importance of language and semantic representation of a text. A more complex way to examine comprehension is to view the activation levels of various words or concepts important in creating a representation of the story structure in memory. One model that specifically examines concept activation is the landscape model. The model posits that greater frequency of activation and the strength of activation of a concept determine the concept’s overall activation level. The higher the activation level of a concept in a text or video, the more likely the concept will be included in the mental representation for the text or video and stored in memory. A third way to study comprehension is to examine how concepts change throughout a text and how the concepts relate to one another. The event-indexing model describes how individuals create situation models based on five dimensions of information: time, space, protagonist, causality, and intentionality. Throughout the process of gaining information, the individual updates the situation models for a text on each of the five dimensions. When events have similar dimensions in common, the events are connected in memory; thus, describing health information with similar dimensions in common (e.g., a protagonist the entire way through the text, events happening in the same amount of time) will be better recalled later. Empirical work on comprehension of both text and video messages has demonstrated the landscape model and event-indexing model’s ability to examine comprehension processes based on the format, language, and organization of the information. Health message design can benefit from utilizing these comprehension models to ensure that knowledge is received by the intended audience and comprehended, and thus able to be used in future experiences.
Knowledge and Comprehension
Ashley R. Kennard, Courtney Anderegg, and David Ewoldsen
Structuration Theory and Health and Risk Messaging
Joel Iverson, Tomeka Robinson, and Steven J. Venette
Risk can be defined using a mathematical formula—probability multiplied by consequences. An essential element of risk communication is a focus on messages within organizations. However, many health-related risks such as Ebola extend beyond an individual organization and risk is better understood as a social construction cogenerated within and between systems. Therefore, the process is influenced by systemic and supra-systemic values and predilections. Risk from a structurational perspective allows an understanding of the public as well as organizational responses to risk. Structuration theory provides a useful lens to move beyond seeing organizations as something that flows within an organization to understanding how organizations are enacted through communication. Structuration theory articulates the connections between systems and structures through the action of agents, whose practices produce and reproduce the rules and resources of social life. Within the structuration tradition, organizational communication scholars have shifted to an understanding of the communicative constitution of organizations (CCO). Specifically, one of the theories of CCO is the Four Flows Model. The four flows highlight the ways people enact organizations and provide a means to analyze the various ways communication constitutes organizations. The four flows are membership negotiation, activity coordination, reflexive self-structuring, and institutional positioning. Membership negotiation enacts the inner members and outsiders at a basic level including socialization, identity, and assimilation. Activity coordination produces collective action around a specific goal. Reflexive self-structuring is the decentralized enactment of structures for the organization through the communication of policies. Institutional positioning covers the macro-level actions where people in the organization act as an entity within the environment. When considering the public reaction to Ebola, a simple way to evaluate risk perception is the intersection of dread and control. The U.S. public considered Ebola a serious risk. From a structuration perspective, the viral nature of twitter, media coverage, and public discussion generated resources for fear to be exacerbated. Structuration theory allows us to position the risk beliefs as rules and resources that are reproduced through discourse. The organizational implications fall primarily into the two flows of institutional positioning and reflexive self-structuring. For institutional positioning, U.S. healthcare organizations faced general public dread and perceived lack of control. Within the United States multiple policies and procedures were changed, thus fulfilling the second flow of organizational self-structuring. The Ebola risk had a significant impact on the communicative constitution of health-care organizations in the United States and beyond. Overall, risk is communicatively constituted, as are organizations. The interplay between risk and health-care organizations is evident through the analysis of American cases of Ebola. Structuration theory provides a means for exploring and understanding the communicative nature of risk and situates that risk within the larger systems of organizations.