Scientific Justification

This paper is a strong candidate for reproduction and robustness assessment because it makes sweeping and influential claims about the structure of ideology in the mass public—particularly the idea that ideological coherence is often overstated and that meaningful ideology characterizes only a minority of respondents. These claims have clear empirical implications and have been used as a field-level corrective in debates on ideological sophistication, issue constraint, and mass belief systems. Yet the strength of the article’s conclusions appears to exceed the direct empirical evidence it presents. A systematic reproduction is therefore warranted to assess whether the patterns invoked in support of the argument can actually be recovered across major public-opinion datasets and under alternative operationalizations of ideological coherence. This is especially important because conclusions about who is or is not “ideological” may be highly sensitive to measurement choices, modeling assumptions, historical period, and political context. A transparent reproduction and replication effort could therefore clarify whether the article identifies a robust empirical regularity or advances a conclusion that is more contingent and context-bound than the paper suggests. This also matters because claims about low ideological sophistication in the mass public can easily become reified into deficit narratives about citizens, particularly when they are insufficiently attentive to unequal access to political knowledge, elite cue environments, and culturally variable forms of ideological organization.

Data Location

The article is indexed in Political Psychology and in LSU’s repository, but I did not find an openly linked replication package from the metadata pages I accessed. The relevant reproduction targets would likely rely on major public datasets discussed or implicated by the paper’s argument, especially ANES and GSS, which are openly available.

Suggested Robustness Checks

- Reconstruct the core claim using multiple operationalizations of ideological coherence, including issue constraint, internal consistency across policy domains, and correspondence between symbolic ideology and issue attitudes. - Test whether the “ideological innocence” conclusion depends on using binary, ordinal, factor-analytic, or latent-class approaches to belief organization. - Re-estimate patterns separately in ANES and GSS, and then compare them across historical periods rather than relying on a single wave or narrow time window. - Examine whether results differ across political sophistication, education, partisan strength, and engagement, since the paper’s argument hinges on large individual differences in ideological organization. - Test sensitivity to item selection: economic issues only, social issues only, mixed issue batteries, and batteries with stronger elite cueing. - Distinguish symbolic ideology from issue-based ideology and from partisan sorting, rather than treating them as interchangeable indicators of ideology. - Compare conclusions under older versus newer ANES waves to assess whether the paper’s claims remain valid in a period of stronger elite polarization and partisan alignment.

Suggested Deviations

A useful extension would be a reproduction and replication program using newer ANES waves, GSS, Nationscape, and other suitable public-opinion datasets. This would allow direct testing of whether the article’s central claims about ideological innocence, weak constraint, and limited mass ideological coherence are stable across time, measurement strategies, and survey infrastructures. Beyond the U.S. context, a particularly valuable extension would be a multi-country replication comparing whether the article’s conclusions generalize to more diverse political settings, including liberal market economies, coordinated market economies, less consolidated party systems, and countries from the Global South. Such a design would help determine whether the patterns emphasized in the article reflect a general feature of mass ideology in capitalist societies or are instead contingent on Anglo-American political structures, elite discourse, partisan sorting, and culturally specific understandings of left-right politics. Suggested Analysis Pipeline - Estimate the main associations using multiple operationalizations of economic conservatism, social conservatism, and neoliberal ideology. - Test whether the observed correlations remain similar across levels of political sophistication, education, and partisan strength. - Apply and discuss critical lenses when interpreting differences by political sophistication, education, and partisan strength, especially where such inferences may reflect measurement privilege, unequal political socialization, or elite-centered assumptions about what counts as ideological coherence. - Compare latent-variable and observed-score approaches to ideological structure, and compare their resulting effect sizes, to address longstanding methodological critiques in the political science literature. - Examine whether the reported alignment between social and economic attitudes depends on scale composition, item selection, or measurement specification. - Map the broader psychological nomological network around left-right ideology, including symbolic ideology, issue positions, system justification, authoritarianism, and related constructs, and test whether there are ideological affinities or asymmetries across left and right, including when social and economic ideology are analyzed separately. - Assess cross-national robustness beyond the United States and United Kingdom, especially in multiparty systems where economic and cultural issue bundles may be less tightly aligned. - Reconstruct the core claim using multiple operationalizations of ideological coherence, including issue constraint, internal consistency across policy domains, and correspondence between symbolic ideology and issue attitudes.