Graphical displays generally facilitate the communication of complex information and are ubiquitous in media. Unfortunately, people differ in their ability to extract data and meaning from graphical representations of quantitative information (i.e., graph literacy). This means that for some people, even well-designed, simple graphs will cause confusion and misunderstanding. Research on the psychology of graph comprehension focuses on two instruments that efficiently assess fundamental graph literacy among diverse adults. The Objective Graph literacy scale is a well-established instrument with good psychometric properties that measures skill via cognitive performance testing (e.g., interpreting and evaluating various graphs). The recently developed Subjective Graph Literacy scale is a brief self-report of graph literacy that can outperform the objective test in notable ways, while reducing text anxiety. Emerging applications in clinical research and practice, including computerized decision aids, can personalize content as a function of one’s graph literacy.
Rocio Garcia-Retamero, Dafina Petrova, Adam Feltz, and Edward T. Cokely
Mohan Jyoti Dutta, Satveer Kaur-Gill, and Naomi Tan
Cultivation theory examines the effects of the media, mainly television on viewer perception over an extended period of time. Television is seen by people throughout the globe, with many spending considerable amounts of time watching the medium. The act of watching television has been described as the first leisure activity to cut across social and ethnic divisions in society. This made it a unique mass media tool because mass message dissemination to diverse groups in a population was made possible. Cultivation scholars have studied the effects of the medium, trying to understand how television content can alter one’s social reality. Heavy viewers are considered to be most susceptible to the effects of cultivation. The reality of these effects poses important questions for health communication scholars considering the role television plays in disseminating health messages. Health communication scholars became interested in studying cultivation to understand the health-related effects the medium could have on viewers. Understanding the health effects of television is pivotal, considering that television and the structures that constitute television content set the agendas for many health topics, often disseminating negative and positive messages that can impact society, especially the young and impressionable. With television content addressing health issues such as nutrition, diet, body image, tobacco, cancer, drugs, obesity, and women’s health, cultivation theory can offer health communication scholars a framework to understand how health behaviors are shaped by the mass media and the roles these media play in reinforcing unhealthy behaviors. By establishing a basis for studying how such portrayals have direct health-related effects on viewers, cultivation theory creates openings for questioning the structures of the media that put out unhealthy content and for interrogating the roles and responsibilities of media agenda in inculcating positive health messages. Directions for future research include looking at contextually contrasting populations that share different cultural and community values, and different ways of consuming television. Research questions exploring the roles of community structures with different sets of subjective norms, or with different roles of community norms, in the realm of cultivation effects offer new areas for exploration.
Christopher B. Mayhorn and Michael S. Wogalter
Warnings are risk communication messages that can appear in a variety of situations within the healthcare context. Potential target audiences for warnings can be very diverse and may include health professionals such as physicians or nurses as well as members of the public. In general, warnings serve three distinct purposes. First, warnings are used to improve health and safety by reducing the likelihood of events that might result in personal injury, disease, death, or property damage. Second, they are used to communicate important safety-related information. In general, warnings likely to be effective should include a description of the hazard, instructions on how to avoid the hazard, and an indication of the severity of consequences that might occur as a result of not complying with the warning. Third, warnings are used to promote safe behavior and reduce unsafe behavior. Various regulatory agencies within the United States and around the globe may take an active role in determining the content and formatting of warnings. The Communication-Human Information Processing (C-HIP) model was developed to describe the processes involved in how people interact with warnings and other information. This framework employs the basic stages of a simple communication model such that a warning message is sent from one entity (source) through some channel(s) to another (receiver). Once warning information is delivered to the receiver, processing may be initiated, and if not impeded, will continue through several stages including attention switch, attention maintenance, comprehension and memory, beliefs and attitudes, and motivation, possibly ending in compliance behavior. Examples of health-related warnings are presented to illustrate concepts. Methods for developing and evaluating warnings such as heuristic evaluation, iterative design and testing, comprehension, and response times are described.