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1.
Risk Anal ; 41(9): 1614-1629, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-33174235

RESUMO

Previous research suggests that when individuals have limited knowledge to make sense of new or emerging technologies, they may rely more on available cues, such as the fairness of those managing the risks, when developing their attitudinal and behavioral responses to the technology. To examine this further, we designed an online experiment (N = 1,042) to test the effects of risk managers' nonoutcome fairness on individuals' selective exposure to additional information and perceived risk. As the study context, we used the development of enhanced geothermal systems (EGS), which uses drilling to tap deep underground sources of heat for district heating and electricity and remains low in familiarity among the U.S. public. The results suggest that participants who read about the fair risk manager were subsequently more likely to have positive attitudes toward EGS development. In turn, those with more positive attitudes were more likely to select and read positively valenced articles about EGS, resulting in an indirect effect of the fairness condition. Although this study also explored whether uncertainty moderated this fairness effect on information seeking, it found no evidence. Additionally, when participants were exposed to information featuring fair risk managers, perceived risk decreased, an effect that was mediated by beliefs that EGS was controllable and not dreadful. These results underscore the importance of using practices that will increase nonoutcome fairness in the introduction of new technologies.


Assuntos
Difusão de Inovações , Risco , Tecnologia , Humanos
2.
Appetite ; 108: 104-116, 2017 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-27677853

RESUMO

Genetic modification (GM) of crops and climate change are arguably two of today's most challenging science communication issues. Increasingly, these two issues are connected in messages proposing GM as a viable option for ensuring global food security threatened by climate change. This study examines the effects of messages promoting the benefits of GM in the context of climate change. Further, it examines whether explicit reference to "climate change," or "global warming" in a GM message results in different effects than each other, or an implicit climate reference. An online sample of U.S. participants (N = 1050) were randomly assigned to one of four conditions: "climate change" cue, "global warming" cue, implicit cue, or control (no message). Generally speaking, framing GM crops as a way to help ensure global food security proved to be an effective messaging strategy in increasing positive attitudes toward GM. In addition, the implicit cue condition led to liberals having more positive attitudes and behavioral intentions toward GM than the "climate change" cue condition, an effect mediated by message evaluations.


Assuntos
Mudança Climática , Produtos Agrícolas/efeitos adversos , Dieta Saudável , Abastecimento de Alimentos , Alimentos Geneticamente Modificados/efeitos adversos , Modelos Psicológicos , Plantas Geneticamente Modificadas/efeitos adversos , Adulto , Idoso , Ira , Mudança Climática/economia , Produtos Agrícolas/economia , Produtos Agrícolas/genética , Produtos Agrícolas/crescimento & desenvolvimento , Sinais (Psicologia) , Inquéritos sobre Dietas , Dieta Saudável/economia , Dieta Saudável/psicologia , Feminino , Abastecimento de Alimentos/economia , Alimentos Geneticamente Modificados/economia , Conhecimentos, Atitudes e Prática em Saúde , Promoção da Saúde/ética , Promoção da Saúde/métodos , Humanos , Intenção , Internet , Masculino , Pessoa de Meia-Idade , Motivação , Plantas Geneticamente Modificadas/genética , Plantas Geneticamente Modificadas/crescimento & desenvolvimento , Estados Unidos
3.
Sci Eng Ethics ; 23(1): 147-164, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-26979178

RESUMO

This study investigates the level of awareness about funding influences and potential conflicts of interests (COI) among early career researchers. The sample for this study included users of one or more of the 14 U.S. laboratories associated with the National Nanotechnology Infrastructure Network. To be eligible, respondents must have been either still completing graduate work or <5 years since graduation. In total, 713 early career researchers completed the web survey, with about half still in graduate school. Results indicate that although respondents were aware of potential funding and COI influences on their work, they remained largely ignorant of their role in addressing or managing these issues. Respondents often attributed the responsibility of addressing these issues to their supervisors. Respondents who had received some training around these issues, however, were more likely to assume more personal responsibility. Overall, this study points out that ignorance among early career researchers is less about awareness of funding and COI issues and more about taking personal responsibility for addressing these issues.


Assuntos
Conflito de Interesses , Pesquisadores/ética , Pesquisadores/psicologia , Pesquisa/economia , Conscientização , Humanos , Inquéritos e Questionários
4.
Appetite ; 78: 8-14, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24630937

RESUMO

This study examines support for the genetic modification (GM) of crops in the context of preventing "late blight," a devastating potato and tomato disease that caused the Irish Potato Famine in the 1850s and results in substantial crop loss today. We surveyed U.S. adults who do the primary grocery shopping in their household (n = 859). Half of the respondents were randomly assigned to read a vignette describing late blight before responding to questions about GM, whereas the other half read a vignette about generic crop disease before responding to questions. We also examine how the perceived fairness of decision makers relates to GM support and the perceived legitimacy of GM decision making. We found that disease specificity mattered less to support and legitimacy than the perceived fairness of decision makers. The perceived risks of GM to human and environmental health negatively related to GM support and legitimacy, whereas the perceived benefits (e.g. reduced threats to crops and a more secure food supply) positively related to support and legitimacy. Objective knowledge about GM had a small, negative relationship with legitimacy whereas self-assessed familiarity with GM had a positive relationship. Overall, the results offer additional confirmation of past findings from more localized settings that perceived fairness of decision makers matters to support for GM and underscore the importance of considering how risk managers' behaviors and actions are perceived alongside individuals' perceptions about the risks and benefits.


Assuntos
Agricultura/métodos , Atitude , Produtos Agrícolas , Tomada de Decisões , Alimentos Geneticamente Modificados , Doenças das Plantas , Plantas Geneticamente Modificadas , Coleta de Dados , Abastecimento de Alimentos , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Percepção , Doenças das Plantas/prevenção & controle , Reconhecimento Psicológico , Estados Unidos
5.
J Health Commun ; 17(4): 477-94, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22376222

RESUMO

This study extends a risk information seeking and processing model to explore the relative effect of cognitive processing strategies, positive and negative emotions, and normative beliefs on individuals' decision making about potential health risks. Most previous research based on this theoretical framework has examined environmental risks. Applying this risk communication model to study health decision making presents an opportunity to explore theoretical boundaries of the model, while also bringing this research to bear on a pressing medical issue: low enrollment in clinical trials. Comparative analysis of data gathered from 2 telephone surveys of a representative national sample (n = 500) and a random sample of cancer patients (n = 411) indicated that emotions played a more substantive role in cancer patients' decisions to enroll in a potential trial, whereas cognitive processing strategies and normative beliefs had greater influences on the decisions of respondents from the national sample.


Assuntos
Ensaios Clínicos como Assunto/estatística & dados numéricos , Tomada de Decisões , Conhecimentos, Atitudes e Prática em Saúde , Neoplasias/psicologia , Seleção de Pacientes , Adulto , Ensaios Clínicos como Assunto/métodos , Emoções , Feminino , Humanos , Masculino , Modelos Psicológicos , Assunção de Riscos
6.
Sci Eng Ethics ; 18(4): 699-717, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21331667

RESUMO

Dependence in nanotechnology on external funding and academic-industry relationships has led to questions concerning its influence on research directions, as well as the potential for conflicts of interest to arise and impact scientific integrity and public trust. This study uses a survey of 193 nanotechnology industry and academic researchers to explore whether they share similar concerns. Although these concerns are not unique to nanotechnology, its emerging nature and the prominence of industry funding lend credence to understanding its researchers' views, as these researchers are shaping the norms and direction of the field. The results of the survey show general agreement that funding sources are influencing research directions in nanotechnology; many respondents saw this influence in their own work as well as other researchers' work. Respondents also agreed that funding considerations were likely to influence whether researchers shared their results. Irrespective of their institutional affiliation or funding status, twice as many researchers as not considered financial conflicts of interest a cause for concern, and three times as many respondents as not disagreed financial conflicts of interest in nanotechnology were uncommon. Only a third was satisfied with the way that conflicts of interest are currently managed and believed current procedures would protect the integrity of nanotechnology research. The results also found differences in views depending on researchers' institutional affiliation and funding status.


Assuntos
Atitude , Conflito de Interesses/economia , Ética em Pesquisa , Indústrias/economia , Nanotecnologia/economia , Pesquisadores , Pesquisa/economia , Indústrias/ética , Disseminação de Informação , Nanotecnologia/ética
7.
Risk Anal ; 31(11): 1749-61, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21883336

RESUMO

Research suggests that fairness perceptions matter to people who are asked to evaluate the acceptability of risks or risk management. Two separate national random surveys (n = 305 and n = 529) addressed Americans' concerns about and acceptance of nanotechnology risk management in the context of the degree to which they view scientists and risk managers as fair. The first survey investigated general views about scientists across four proposed dimensions of fairness (distributional, procedural, interpersonal, and informational). The results show that respondents who believe that the outcomes of scientific research tend to result in unequal benefits (distributional fairness) and that the procedures meant to protect the public from scientific research are biased (procedural fairness) were more concerned about nanotechnology. Believing scientists would treat them with respect (interpersonal fairness) and ensure access to information (informational fairness) were not significant predictors of concern. The second study also looked at these four dimensions of fairness but focused on perceptions of risk managers working for government, universities, and major companies. In addition to concern, it also examined acceptance of nanotechnology risk management. Study 2 results were similar to those of study 1 for concern; however, only perceived informational fairness consistently predicted acceptance of nanotechnology risk management. Overall, the study points to the value of considering fairness perceptions in the study of public perceptions of nanotechnology.


Assuntos
Nanotecnologia , Medição de Risco , Coleta de Dados , Humanos , Percepção , Opinião Pública , Gestão de Riscos , Confiança , Estados Unidos
8.
J Health Commun ; 15(2): 189-204, 2010 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20390986

RESUMO

This study investigates whether perceived fairness of doctor-patient interactions relates to individuals' willingness to communicate with their doctors about clinical trial enrollment. It also explores how willingness to talk, the perceived fairness of interactions, and trust in doctors relate to intentions to participate in a future clinical trial. Results from a random digit dial (RDD) telephone survey of U.S. adults (N = 500) measured respondents' willingness to talk to their doctors about clinical trials and intentions to participate in future trials. Perceived fairness of interactions and trust in doctors were associated with willingness to talk about clinical trials. A negative relationship emerged between perceived fairness of interactions and intentions to participate when willingness to talk was introduced into the equation. This relationship suggested that when respondents were more willing to talk to their doctors and perceived these discussions as fair, they were also less likely to express intentions to enroll in future trials. In turn, perceiving these interactions as less fair was related to greater intention to enroll. Fairness of interactions and trust in doctors were less relevant to respondents who were less willing to talk to their doctors; however, these respondents also were more likely to express intentions to enroll in future clinical trials.


Assuntos
Atitude Frente a Saúde , Ensaios Clínicos como Assunto , Seleção de Pacientes , Relações Médico-Paciente , Análise de Variância , Humanos , Inquéritos e Questionários , Telefone , Confiança
9.
Risk Anal ; 28(1): 161-78, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18304114

RESUMO

This article focuses on the relative influence of individual versus community effects on risk perception. The study is grounded in literature examining how individuals manage information and make risk judgments in the context of suspected environmental cancer threats. We focus on three individual-level perspectives: the psychometric model of risk perception, an adaptation of the heuristic-systematic information processing model, and cancer anxiety. We also evaluate five sets of community-level variables that frame cancer cluster investigations: demographic, epidemiologic, sociologic, etiologic, and pathologic. Data were collected through a mail survey of 30 communities in which cancer cluster investigations were being conducted. Response rates averaged 43%, with 1,111 records in the final data set. Through multilevel modeling and other techniques, the results show that the individual-level model developed in previous work remains a robust description of risk perception in these cases. However, the analysis also shows that the community-level measures neither improve the individual-level model nor offer any substantial explanatory power of their own. We provisionally conclude that, within the context of cancer cluster investigations, risk perception is a phenomenon located in a common psychological dimension that is substantially independent of contextual influences. We also suggest that risk communication efforts in this specific context might successfully draw from a common approach informed more by individual than community factors.


Assuntos
Neoplasias/epidemiologia , Neoplasias/psicologia , Percepção , Medição de Risco , Ansiedade , Análise por Conglomerados , Processamento Eletrônico de Dados , Inquéritos Epidemiológicos , Humanos , Relações Interpessoais , Psicometria , Estados Unidos
10.
Risk Anal ; 28(6): 1539-52, 2008 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-18808391

RESUMO

Attracting new technologies to a region can mean significant economic growth, so understanding why some communities may not favor becoming "the next Silicon Valley" merits consideration. This study investigates the relationship among the perceived behavior of local scientists and community members' attitudes toward their research. Drawing on theories from organizational justice, it hypothesizes that when local residents consider scientists as more just in their behavior, they will also have more favorable attitudes toward the scientists and their research. Just, in this sense, refers to whether scientists are perceived as fair in terms of outcomes, procedures, interpersonal treatment, and explanations in their dealings with the community. Favorable attitudes are measured in terms of concern about new technologies and satisfaction with research. Data were collected via a mail survey of residents in two upstate New York counties (N= 1,306) that host substantial technology research facilities. Controlling for demographics, media use, basic science knowledge, and technology awareness, the results show that distributive justice (i.e., fairness of outcomes) had a consistent, negative relationship with technology concern. In comparison, all four justice variables were positively related with research satisfaction. The findings suggest that the perceived behavior of local scientists may indeed impact community support for their research.


Assuntos
Biotecnologia/métodos , Nanotecnologia/métodos , Humanos , New York , Percepção , Opinião Pública , Pesquisa , Projetos de Pesquisa , Apoio à Pesquisa como Assunto , Justiça Social , Inquéritos e Questionários
11.
Public Underst Sci ; 27(2): 185-196, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29353551

RESUMO

Building on research in motivated reasoning and framing in science communication, we examine how messages that vary attribution of responsibility (human vs animal) and temporal orientation (now vs in the next 10 years) for wildlife disease risk influence individuals' conservation intentions. We conducted a randomized experiment with a nationally representative sample of US adults ( N = 355), which revealed that for people low in biospheric concern, messages that highlighted both human responsibility for and the imminent nature of the risk failed to enhance conservation intentions compared with messages highlighting animal responsibility. However, when messages highlighting human responsibility placed the risk in a temporally distal frame, conservation intentions increased among people low in biospheric concern. We assess the underlying mechanism of this effect and discuss the value of temporal framing in overcoming motivated skepticism to improve science communication.

12.
Philos Trans R Soc Lond B Biol Sci ; 371(1689)2016 Mar 05.
Artigo em Inglês | MEDLINE | ID: mdl-26880833

RESUMO

As anthropogenic stressors threaten the health of marine ecosystems, there is a need to better understand how the public processes and responds to information about ocean health. Recent studies of public perceptions about ocean issues report high concern but limited knowledge, prompting calls for information campaigns to mobilize public support for ocean restoration policy. Drawing on the literature from communication, psychology and related social science disciplines, we consider a set of social-cognitive challenges that researchers and advocates are likely to encounter when communicating with the public about ocean health and emerging marine diseases--namely, the psychological distance at which ocean issues are construed, the unfamiliarity of aquatic systems to many members of the public and the potential for marine health issues to be interpreted through politicized schemas that encourage motivated reasoning over the dispassionate consideration of scientific evidence. We offer theory-based strategies to help public outreach efforts address these challenges and present data from a recent experiment exploring the role of message framing (emphasizing the public health or environmental consequences of marine disease) in shaping public support for environmental policy.


Assuntos
Conservação dos Recursos Naturais/métodos , Ecossistema , Poluição Ambiental , Oceanos e Mares , Animais , Conscientização , Humanos , Política
13.
PLoS One ; 11(5): e0156205, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27224252

RESUMO

Since 1960, bat rabies variants have become the greatest source of human rabies deaths in the United States. Improving rabies awareness and preventing human exposure to rabid bats remains a national public health priority today. Concurrently, conservation of bats and the ecosystem benefits they provide is of increasing importance due to declining populations of many bat species. This study used a visitor-intercept experiment (N = 521) in two U.S. national parks where human and bat interactions occur on an occasional basis to examine the relative persuasiveness of four messages differing in the provision of benefit and uncertainty information on intentions to adopt a rabies exposure prevention behavior. We found that acknowledging benefits of bats in a risk message led to greater intentions to adopt the recommended rabies exposure prevention behavior without unnecessarily stigmatizing bats. These results signify the importance of communicating benefits of bats in bat rabies prevention messages to benefit both human and wildlife health.


Assuntos
Quirópteros/virologia , Conhecimentos, Atitudes e Prática em Saúde , Raiva/prevenção & controle , Adulto , Animais , Animais Selvagens , Conservação dos Recursos Naturais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Saúde Pública , Raiva/transmissão , Raiva/veterinária , Distribuição Aleatória , Estados Unidos
14.
Proc Nutr Soc ; 67(4): 428-36, 2008 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-18847520

RESUMO

One of the key challenges facing efforts to translate nutrition research into public health recommendations is understanding how the public will respond to these efforts, including whether they will trust the information. Among factors that influence trust in health communication is the extent to which the sources of the information are considered accurate, balanced, fair and unbiased. In relation to bias, few issues rise to as high a level of concern as the suspicion of conflicts of interest among scientists. Sometimes, even the perception of conflict of interest is enough to cast doubt on the integrity of the research and credibility of the results. The present paper provides an overview of research on conflicts of interest in science, including ways in which it has touched the field of nutrition. It then offers data on public views about conflicts of interest in science, including the extent to which funding sources influence trustworthiness of the research. The conclusions suggest implications for translational research in nutrition.


Assuntos
Comunicação , Conflito de Interesses , Informação de Saúde ao Consumidor , Ciências da Nutrição , Confiança , Humanos , Ciências da Nutrição/ética , Ciências da Nutrição/normas
15.
Risk Anal ; 27(2): 337-50, 2007 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-17511702

RESUMO

Cancer is a significant public health topic and is frequently a factor in public reactions to environmental hazards. It may be reasonable to suggest that a unique form of health anxiety exists - one specific to cancer. In this article, we explore a measure of cancer anxiety that has applicability to risk perception in the specific context of communities that are alarmed over suspect cancer rates thought to be associated with environmental hazards. A literature search was used to identify survey questions previously used to measure cancer worry, fear, anxiety, etc. A list of 24 items was employed in a mail survey sent to 30 communities in which cancer rates were under investigation (part of a broader study). An analysis of the dataset of 1,111 responses yields two versions of a cancer anxiety scale: one an additive combination of 21 items (alpha= 0.77) and the other a two-factor model consisting of nine- and four-item subscales (alpha= 0.74 and 0.69). The resulting scales are evaluated for their ability to predict perception of risk from the environmental hazards in these cases. Controlling for age, sex, and cancer status, the scales explain between 2% and 10% of risk perception (full R(2) values ranging from 0.17 to 0.24). Given the range of concepts required to model risk perception, we conclude that this measure of cancer anxiety is sufficiently reliable and robust to be recommended for use in circumstances involving hazards associated with cancer. Other uses and further development of the measure are discussed.


Assuntos
Ansiedade , Neoplasias/prevenção & controle , Neoplasias/psicologia , Percepção , Idoso , Exposição Ambiental , Feminino , Humanos , Funções Verossimilhança , Masculino , Pessoa de Meia-Idade , Modelos Estatísticos , Opinião Pública , Características de Residência , Risco , Inquéritos e Questionários
16.
J Health Commun ; 12(6): 527-49, 2007 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-17763051

RESUMO

Holding a public meeting is a frequent method of communicating with community residents during official investigations into possible cancer clusters; however, there has been little formal research into the effectiveness of this method of health communication. This article presents research examining the influence of public meetings held during ongoing cancer cluster investigations in six U.S. communities. Drawing on social psychological theories of organizational justice, it examines the degree to which three specific elements of justice, including having a voice in the process, receiving fair interactional treatment, and facing equal risk of loss (i.e., cancer), influenced five outcome variables: meeting satisfaction, community connectedness, willingness to accept meeting outcomes or recommendations, willingness to attend future public meetings, and concern about the potential cancer cluster. The analysis of data collected from meeting attendees who responded to the mailed survey (N = 165) confirms a strong role for justice concerns in public meeting evaluations. In particular, perceptions of voice and interactional treatment had consistently large effects on the outcome variables, suggesting that managing a fair public engagement process can contribute to positive civic outcomes even during periods of heightened community concern about area cancer rates.


Assuntos
Atitude Frente a Saúde , Participação da Comunidade/estatística & dados numéricos , Relações Comunidade-Instituição , Disseminação de Informação/métodos , Neoplasias/epidemiologia , Justiça Social , Idoso , Análise de Variância , Análise por Conglomerados , Comunicação , Participação da Comunidade/métodos , Comportamento do Consumidor , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/prevenção & controle , Opinião Pública , Relações Públicas , Análise de Regressão , Medição de Risco , Inquéritos e Questionários , Estados Unidos/epidemiologia
17.
J Health Commun ; 11(1): 75-91, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16546920

RESUMO

Ten years ago, scholars suggested that risk communication was embarking on a new phase that would give increased attention to the social contexts that surround and encroach on public responses to risk information. A decade later, many researchers have answered the call, with several defining studies examining the social and psychological influences on risk communication. This article reviews risk communication research appearing in the published literature since 1996. Among studies, social trust, the social amplification of risk framework, and the affect heuristic figured prominently. Also common were studies examining the influence of risk in the mass media. Among these were content analyses of media coverage of risk, as well as investigations of possible effects resulting from coverage. The use of mental models was a dominant method for developing risk message content. Other studies examined the use of risk comparisons, narratives, and visuals in the production of risk messages. Research also examined how providing information about a risk's severity, social norms, and efficacy influenced communication behaviors and intentions to follow risk reduction measures. Methods for conducting public outreach in health risk communication rounded out the literature.


Assuntos
Comunicação , Promoção da Saúde , Pesquisa sobre Serviços de Saúde , Meios de Comunicação de Massa , Medição de Risco , Marketing Social , Previsões , Comportamentos Relacionados com a Saúde , Humanos , Terrorismo , Confiança
18.
Risk Anal ; 23(6): 1257-70, 2003 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-14641899

RESUMO

This article offers longitudinal data tracking people who did and did not attend a series of public meetings in an upstate New York rural community grappling with the expansion of an existing solid waste landfill and remediation of an adjacent inactive hazardous waste site. Before and after the public meetings, mailed questionnaires measured risk perceptions and perceived credibility of risk managers (here, the state government agencies and the responsible industry) conducting the meetings. Respondents at each measurement point included meeting attendees and nonattendees, with some fluctuation over time when attendees at one measurement point were nonattendees at the next and vice versa. The results from the first survey indicate that following the first two public meetings, attendees perceived greater risks from the waste sites than did nonattendees; attendees also perceived the risk managers as less credible. After the third public meeting, the results showed that attendees' risk perceptions remained steady; however, perceptions of government agency credibility significantly decreased. After the fourth public meeting, the survey found that attendees' risk perceptions were again not significantly different, whereas perceptions of government agency credibility increased significantly. The industry's credibility also increased, though only among attendees who had attended the most recent public meeting, not among attendees who had attended both the third and fourth public meetings. For nonattendees, risk perceptions and credibility ratings did not change. The discussion examines how distinctive characteristics of communication at each public meeting may have resulted in different effects and proposes hypotheses for future research.

19.
Risk Anal ; 23(2): 343-53, 2003 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-12731818

RESUMO

This study examines how credibility affects the way people process information and how they subsequently perceive risk. Three conceptual areas are brought together in this analysis: the psychometric model of risk perception, Eagly and Chaiken's heuristic-systematic information processing model, and Meyer's credibility index. Data come from a study of risk communication in the circumstance of state health department investigations of suspected cancer clusters (five cases, N = 696). Credibility is assessed for three information sources: state health departments, citizen groups, and industries involved in each case. Higher credibility for industry and the state directly predicts lower risk perception, whereas high credibility for citizen groups predicts greater risk perception. A path model shows that perceiving high credibility for industry and state-and perceiving low credibility for citizen groups-promotes heuristic processing, which in turn is a strong predictor of lower risk perception. Alternately, perceiving industry and the state to have low credibility also promotes greater systematic processing, which consistently leads to perception of greater risk. Between a one-fifth and one-third of the effect of credibility on risk perception is shown to be indirectly transmitted through information processing.

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