We examine the trade-offs associated with using Amazon.com's Mechanical Turk (MTurk) interface for subject recruitment. We first describe MTurk and its promise as a vehicle for performing low-cost and easy-to-field experiments. We then assess the internal and external validity of experiments performed using MTurk, employing a framework that can be used to evaluate other subject pools. We first investigate the characteristics of samples drawn from the MTurk population. We show that respondents recruited in this manner are often more representative of the U.S. population than in-person convenience samples-the modal sample in published experimental political science-but less representative than subjects in Internet-based panels or national probability samples. Finally, we replicate important published experimental work using MTurk samples.
Recent political science research on the effects of core personality traits-the Big Five-contributes to our understanding of how people interact with their political environments. This research examines how individual-level variations in broad, stable psychological characteristics affect individual-level political outcomes. In this article, we review recent work that uses the Big Five to predict political attitudes and behavior. We also replicate some of these analyses using new data to examine the possibility that prior findings stem from sampling error or unique political contexts. Finally, we discuss several of the challenges faced by scholars who are currently pursuing or are interested in pursuing this line of inquiry. These challenges include refining theoretical explanations of how the Big Five shape political outcomes, addressing important measurement concerns, and resolving inconsistencies across studies.
Partisanship seems to affect factual beliefs about politics. For example, Republicans are more likely than Democrats to say that the deficit rose during the Clinton administration; Democrats are more likely to say that inflation rose under Reagan. What remains unclear is whether such patterns reflect differing beliefs among partisans or instead reflect a desire to praise one party or criticize another. To shed light on this question, we present a model of survey response in the presence of partisan cheerleading and payments for correct and "don't know" responses. We design two experiments based on the model's implications. The experiments show that small payments for correct and "don't know" answers sharply diminish the gap between Democrats and Republicans in responses to "partisan" factual questions. Our conclusion is that the apparent gulf in factual beliefs between members of different parties may be more illusory than real. The experiments also bolster and extend a major finding about political knowledge in America: like others, we show that Americans have limited knowledge about political facts, but we also show that many Americans recognize their own lack of knowledge.
Do people form relationships based upon political similarity? Past work has shown that social relationships are more politically similar than expected by chance, but the reason for this concordance is unclear. Is it because people prefer politically similar others or is it attributable to confounding factors such as convergence, social structures, and sorting on non-political characteristics? Addressing this question is challenging because we typically do not observe partners prior to relationship formation. Consequently, we leverage the domain of online dating. We first conducted a nationwide experiment in which we randomized political characteristics in dating profiles. Second, we analyzed behavioral data from a national online dating community. We find that people evaluate potential dating partners more favorably and are more likely to reach out to them when they have similar political characteristics. The magnitude of the effect is comparable to that of educational homophily and half as large as racial homophily.
Do presidential campaign advertisements mobilize, inform, or persuade citizens? To answer this question we exploit a natural experiment, the accidental treatment of some individuals living in nonbattleground states during the 2000 presidential election to either high levels or one-sided barrages of campaign advertisements simply because they resided in a media market adjoining a competitive state. We isolate the effects of advertising by matching records of locally broadcast presidential advertising with the opinions of National Annenberg Election Survey respondents living in these uncontested states. This approach remedies the observed correlation between advertising and both other campaign activities and previous election outcomes. In contrast to previous research, we find little evidence that citizens are mobilized by or learn from presidential advertisements, but strong evidence that they are persuaded by them. We also consider the causal mechanisms that facilitate persuasion and investigate whether some individuals are more susceptible to persuasion than others. , and the reviewers, as well as seminar participants at Columbia, Dartmouth, NYU, UCLA, and Yale, for assistance and helpful comments. Appendices, a replication archive, and additional analyses discussed in the text are available at http://research.yale.edu/huber.
Previous research shows that partisans rate the economy more favorably when their party holds power. There are several explanations for this association, including use of different evaluative criteria, selective perception, selective exposure to information, correlations between economic experiences and partisanship, and partisan bias in survey responses. We use a panel survey around the November 2006 election to measure changes in economic expectations and behavioral intentions after an unanticipated shift in political power. Using this design, we can observe whether the association between partisanship and economic assessments holds when some leading mechanisms thought to bring it about are excluded. We find that there are large and statistically significant partisan differences in how economic assessments and behavioral intentions are revised immediately following the Democratic takeover of Congress. We conclude that this pattern of partisan response suggests partisan differences in perceptions of the economic competence of the parties, rather than alternative mechanisms.
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