Notice: the WebSM website has not been updated since the beginning of 2018.

Web Survey Bibliography

Title Non-Differentiation and Web-Based Survey Methods: An Experiment
Author Taylor, E.
Year 2007
Access date 25.05.2007
Abstract

Current conversations around web-survey panelist quality lean heavily on simple heuristics like non-differentiation (commonly called "straight lining"). The development and application of such heuristics usually ignore intersections with scientific understanding of measurement error generally, and cognitive processing theory specifically. Using a sample of web-survey panelists, this experiment manipulated four questionnaire design variables, number of scale points, question order, question placement, question difficulty), and compared nondifferentiation across these conditions. Signiflcantly greater non-differentiation occurred in questions with more cognitively axing requests, and in items rated later in the questionnaire. The use of 5-pointand 11 -point scales elicited significantly different levels of non-differentiation, but the direction of difference is less clear. Beyond holding implications for questionnaire design practice, the results also question the reliability and validly of o non-differentiation heuristic for identifying poor-quality web panelists.

Access/Direct link

Conference homepage

Year of publication2007
Bibliographic typeConferences, workshops, tutorials, presentations
Full text availabilityAvailable on request
Print

Web survey bibliography - The American Association for Public Opinion Research (AAPOR) 62th Annual Conference, 2007 (48)