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Despite the promise of Internet surveys, there are significant concerns about the representativeness of the sample and survey instrument effects. This article seeks to address these questions by examining the differences and similarities between parallel Internet and telephone surveys conducted in Quebec after the provincial election in 2007. Our results indicate that the responses obtained in each mode differ somewhat from each other but that few inferential differences would occur if conclusions were drawn from the analysis of one dataset or the other. We urge researchers to consider the Internet as a viable mode of data collection, in that the consequences of mode effects appear to be minimal.
Stephenson et al. (Fri,) studied this question.