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Suggested Citation:"Appendices." National Research Council. 1996. Community Response to High-Energy Impulsive Sounds: An Assessment of the Field Since 1981. Washington, DC: The National Academies Press. doi: 10.17226/9135.
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APPENDIX

A

Interepretations of Findings of Controlled-Exposure and Social Survey Studies

DIFFERENCES BETWEEN STUDY TYPES

As summarized in Table 5, social surveys differ from controlled-exposure field studies (whether conducted in laboratory or field settings) in a number of ways that impede direct comparisons of the data collected in the two types of studies. It is useful to keep these differences in mind when developing a dosage-response relationship for predicting community response on the basis of a combination of information from the two types of studies.

DIFFICULTIES IN LINKING OF LABORATORY AND FIELD DATA

Estimates of the annoyance of individual sounds as judged in controlled-exposure studies and of the prevalence of noise-induced annoyance in a community are both derived from information about the relative frequencies of occurrence of self-reports of annoyance, based on a pooling of the opinions of either (a) test subjects about the immediate annoyance of individual test signals or (b) survey respondents about the long-term annoyance of their neighborhood noise environment. The similarity in the pooling of annoyance judgments does not constitute a logical link between the probability that a single noise intrusion will lead to an individual's report of annoyance in some degree (as in a controlled-exposure study) and the proportion of residents highly annoyed by cumulative noise exposure in a community (as in a social survey).

Probabilities of individual reports of high annoyance to controlled signal presentations are inferred from the relative frequencies of judgments of the an

Suggested Citation:"Appendices." National Research Council. 1996. Community Response to High-Energy Impulsive Sounds: An Assessment of the Field Since 1981. Washington, DC: The National Academies Press. doi: 10.17226/9135.
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Suggested Citation:"Appendices." National Research Council. 1996. Community Response to High-Energy Impulsive Sounds: An Assessment of the Field Since 1981. Washington, DC: The National Academies Press. doi: 10.17226/9135.
×
Page 39
Suggested Citation:"Appendices." National Research Council. 1996. Community Response to High-Energy Impulsive Sounds: An Assessment of the Field Since 1981. Washington, DC: The National Academies Press. doi: 10.17226/9135.
×
Page 38
Next: Appendix A: Interpretation of Findings of Controlled-Exposure and Social Survey Studies »
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