Working Papers
Kocak, Korhan. Working Papers. “Provoking the Opposition”. Current DraftAbstract
Candidates in primary elections face a trade-off between ideological proximity to the party's base and the probability of winning the general election. I describe conditions under which an incumbent politician provokes the opposition party into nominating more extreme candidates. By moving away from the center, the incumbent can exploit the divisions in the opposition party and improve her reelection prospects, despite hurting her appeal to the median voter in the general election. I identify primaries as an understudied mechanism that drives political polarization in two-party democracies. Furthermore, the analysis fits the observation that reelection-seeking incumbents sometimes move away from the center towards the end of their first term in office. I show that party gatekeeping drives this behavior: with a richer set of candidates, the effect disappears.
Abramson, Scott, Korhan Kocak, and Asya Magazinnik. Working Papers. “What Do We Learn About Voter Preferences From Conjoint Experiments?”.Abstract
Political scientists frequently interpret the results of conjoint experiments as reflective of voter preferences. In this paper we show that the target estimand of conjoint experiments, the AMCE, is not well-defined in these terms. Even with individually rational experimental subjects, unbiased estimates of the AMCE can indicate the opposite of the true preference of the majority. To show this, we characterize the social choice correspondence implied by AMCE and demonstrate its several undesirable properties. With this result we provide a method for placing sharp bounds on the proportion of experimental subjects with a strict preference for a given candidate-feature. We provide testable assumptions that help reduce the size of these bounds. Finally, we offer a structural interpretation of the AMCE and highlight that the problem we describe persists even when a model of voting is imposed.
Conjoint Experiments
Kocak, Korhan. Working Papers. “Sequential Updating: A Behavioral Model of Belief Change”.Abstract

The way information is processed by decision makers is frequently at odds with the standard theoretical framework. On many contentious topics, decision makers' beliefs often fail to converge despite exposure to a high number of signals, or still continue to polarize. Individuals have been shown to exhibit the backfire effect, holding onto their initial beliefs even more strongly when presented with evidence to the contrary. The first piece of information in a series often acts as an anchor, and thus has an excessively high weight in posteriors. Decision makers' beliefs continue to shift after repeated signals, although no learning occurs. Based on recent findings on working memory, this paper proposes a cognitively less demanding yet ultimately incorrect way to update beliefs that accounts for these cognitive biases. If a signal is informative on multiple dimensions, and if individuals can hold only a limited number of items in working memory, then the order with which beliefs are updated across different dimensions leads to different posteriors. The unifying model advanced by this paper shows that polarization is possible even under common priors and common signals, and suggests new avenues of research for a better understanding of how information is processed by individuals, as well as how persuasion occurs.

Sequential Updating
Kibris, Ozgur, and Korhan Kocak. Working Papers. “Social Media and Press Freedom: A Global Games Approach”.Abstract

The use of social media as a tool for spreading political information is accentuated when traditional media outlets are under pressure from governments. One such case was the 2013 protests in Turkey; largely ignored by mass media, protesters took to Twitter to get their voice heard, despite threats and attempts  at suppression. We analyze this interaction on social media in a global game setting. Our results show that an increase in connectedness of a country serves to bring in line the information revealed by the mainstream and the alternative media. An increase in connectedness may free the mainstream media by making their capture more costly for the incumbent, thus allowing all media outlets to share relevant information with the public. Conversely, it may also lead the government to capture the alternative media outlets as well as the mainstream media, thus preventing dissemination of information in the country completely. The relationship between press freedom (as well as voter welfare) and social media usage rates depends on the incentives faced by the incumbent, who may either increase or decrease pressure on traditional media in response. Finally, we examine a cross-country dataset to test the predictions of our model. We show that our theoretical hypotheses are corroborated by data, and are robust to various specifications and empirical methods.

Social Media and Press Freedom
Paler, Laura, Camille Strauss-Kahn, and Korhan Kocak. Forthcoming. “Is Bigger Always Better? How Targeting Aid Windfalls Affects Capture and Social Cohesion”. Comparative Political Studies. Publisher's VersionAbstract

A central challenge in development involves ensuring that humanitarian and development aid reaches those in greatest need. Aid agencies typically try to achieve this by targeting aid to vulnerable individuals or groups. Despite the prevalence of targeting, we know little about its effects on distributional outcomes and social cohesion in communities where some are intended to benefit and others are excluded. We investigate this by formalizing targeting as a bargaining game with coalition formation involving three players—the target group, the elite, and an excluded group. We find that whether more aid reaches the target group depends on competition between elites and the excluded group. We provide support for predictions using a regression discontinuity design and original survey data from an aid program implemented in Aceh, Indonesia. This paper demonstrates the importance of understanding the role of community dynamics in shaping the economic and social outcomes of targeted aid programs.

Targeting Aid Online Appendix
Clarke, Killian, and Korhan Kocak. Forthcoming. “Launching Revolution: Social Media and the Egyptian Uprising's First Movers”. British Journal of Political Science. Publisher's VersionAbstract
Drawing on evidence from the 2011 Egyptian uprising, we demonstrate how the use of two social media platforms – Facebook and Twitter – contributed to a discrete mobilizational outcome: the staging of a successful first protest in a revolutionary cascade, or, what we call "first mover mobilization." Specifically, we argue that these two platforms facilitated the staging of a large, nationwide, and seemingly leaderless protest on January 25, 2011, which signaled to hesitant but sympathetic Egyptians that a revolution might be in the making. Using qualitative and quantitative evidence, including interviews, social media data, and surveys, we analyze three mechanisms that linked these platforms to the success of the January 25 protest: 1) protester recruitment, 2) protest planning and coordination, and 3) live updating about protest logistics. The paper not only contributes to debates about the role of the Internet in the Arab Spring and other recent waves of mobilization, but also demonstrates how scholarship on the Internet in politics might move toward making more discrete, empirically grounded causal claims.
Launching Revolution Online Appendix