A Different Take on the Deliberative Poll: Information, Deliberation, and Attitude Constraint

Opinion pollsters, political scientists, and democratic theoristshave long been concerned with the normative and methodologicalimplications of nonattitudes (Converse 1964). Of the proposedremedies to the weak and labile attitudinal responses profferedby an uninformed and disinterested public, perhaps the mostambitious to date has been Fishkin’s concept of the deliberativepoll (Fishkin 1991, 1995, 1997). Combining probability samplingwith information intervention and increased deliberation affordsa unique insight into what might be considered the true "voiceof the people." Yet, while deliberative polling draws heavilyon the general notion of political sophistication (Luskin 1987),empirical analyses have tended to focus almost entirely on howthe process of deliberation impacts on marginal totals of attitudeitems at both the individual and aggregate level (Fishkin 1997;Luskin, Fishkin, and Jowell 2002; Sturgis 2003). Little attention,in contrast, has been paid to outcomes that relate to otherdimensions of opinion quality, such as attitude constraint.Constraint refers to the level of consistency between attitudeswithin an individual belief system that arises from a combinationof logical, social, and psychological factors (Converse 1964).In this article we analyze data from five deliberative pollsconducted in the United Kingdom in the 1990s in order to investigatethe impact of political information and deliberation on attitudeconstraint. Across a broad range of issue areas we evaluatethe extent to which the deliberative process impacts on statisticalassociations among attitude items between the first and subsequentwaves of the polls. We conclude by discussing the implicationsof our results for the validity and reliability of survey measuresof the attitude and the broader utility of the deliberativepolling method as a tool of social scientific inquiry.