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The effect of bright lines in environmental risk communication

Conference · · Environmental Professional; (United States)
OSTI ID:6123093
; ; ;  [1]
  1. Research Triangle Inst., Research Triangle Park, NC (United States)
Bright lines in environmental risk communication refer to the specific levels at which an environmental risk becomes a serious health threat and action should be taken to mitigate its effects. This study examined the effect of bright lines'' in risk communication by emphasizing the radon exposure threshold level of 4 picocuries per liter. Specifically, the authors developed a computer-assisted interview containing bright-line versions of risk information. The bright-line version contained a range of possible radon levels, the corresponding number of estimated lung cancer cases, the relative health risk from radon compared to other health risks, and the EPA guidelines for mitigating levels above 4 picocuries in the home. The non-bright line version was identical to the bright-line version, except it did not include the EPA's mitigation recommendations. Effect measures included respondents' change in perceived risk after reading their materials, intended testing behavior, and advice to their neighbor for a specified radon level either above or below the 4 picocury threshold level. This paper discusses broader policy implications for designing effective risk communication programs.
OSTI ID:
6123093
Report Number(s):
CONF-930523--
Conference Information:
Journal Name: Environmental Professional; (United States) Journal Volume: Supplement
Country of Publication:
United States
Language:
English