A new telephone survey experiment finds that, despite major structural differences, an opinion poll drawn from a commercial voter file can produce results similar to those from a sample based on ...

Aqua Survey, Inc. (ASI) is a full service ecotoxicology company founded in 1975. Aqua Survey provides laboratory testing, field sampling, geophysical surveying and consulting services to a wide ...

Data was also drawn from other interviews from prior and subsequent waves with this same set of respondents (see “Linking the ...