Main Title |
Urban Visual Air Quality Judgments: Reliability and Validity. |
Author |
Stewart, T. R. ;
Middleton, P. ;
Ely, D. ;
|
CORP Author |
National Center for Atmospheric Research, Boulder, CO.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
Year Published |
1983 |
Report Number |
EPA/600/J-83/306; |
Stock Number |
PB85-224533 |
Additional Subjects |
Visual perception ;
Air quality ;
Reliability ;
Validity ;
Urban areas ;
Humans ;
Responses ;
Reprints ;
Air pollution effects(Humans)
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB85-224533 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
18p |
Abstract |
Visual air quality is fundamentally a human response to characteristics of the physical environment. A procedure based on judgments of human observers for measuring visual air quality in urban areas is described, and its reliability and validity are examined using the results of several studies conducted in a metropolitan area. It is concluded that the procedure provides a measure that is sufficiently reliable and valid to warrant its use in studies of the causes and consequences of changes in visual air quality. Substantial agreement was found among individuals with regard to judgments of visual air quality, but the possibility of differences between trained and untrained observers requires further investigation. The paper provides an example of methods that can be used, and issues that should be addressed, in the development of perceived environmental quality indices. |