Impatti, adattamento e vulnerabilita Le cause e le responsabilita dei cambiamenti climatici sono state trattate sul numero di ottobre della rivista Cda. Approfondiamo l’argomento presentando il documento: “Cambiamenti climatici 2007: impatti, adattamento e vulnerabilita” votato ad aprile 2007 dal secondo gruppo di lavoro del Comitato Intergovernativo sui Cambiamenti Climatici (Intergovernmental Panel on Climate Change). Si tratta del secondo di tre documenti che compongono il quarto rapporto sui cambiamenti climatici.

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Climate Change 2007: Impacts, Adaptation and Vulnerability.

Habits of the Heart Individualism and Commitment in American Life

Unequal Democracy: The Political Economy of the New Gilded Age

American Grace: How Religion Divides and Unites Us

Competition is a defining element of democracy. One of the most noteworthy events over the last quarter-century in U.S. politics is the change in the nature of elite party competition: The parties have become increasingly polarized. Scholars and pundits actively debate how these elite patterns influence polarization among the public (e.g., have citizens also become more ideologically polarized?). Yet, few have addressed what we see as perhaps more fundamental questions: Has elite polarization altered the way citizens arrive at their policy opinions in the first place and, if so, in what ways? We address these questions with a theory and two survey experiments (on the issues of drilling and immigration). We find stark evidence that polarized environments fundamentally change how citizens make decisions. Specifically, polarization intensifies the impact of party endorsements on opinions, decreases the impact of substantive information and, perhaps ironically, stimulates greater confidence in those—less substantively grounded—opinions. We discuss the implications for public opinion formation and the nature of democratic competition.

How Elite Partisan Polarization Affects Public Opinion Formation (WP-12-14)

Studies of political participation and representation often contend that elected officials respond more to the preferences of voters than those of nonvoters, but seldom test this claim. This is a critical assumption because if true, biases in who participates will lead to biased representation. Office holders might respond disproportionately to voters’ preferences because voters tend to select like-minded representatives, voters tend to communicate their preferences more, and only voters can reelect representatives. We find that voter preferences predict the aggregate roll-call behavior of Senators while nonvoter preferences do not. We also present evidence supporting the three explanations advanced to account for the preferential treatment of voters.

Are Voters Better Represented

We compare the ideological proximity of Latinos and whites to their Members of Congress (MCs), demonstrating the degree to which Latinos are underrepresented compared to whites. We show how this representation gap varies with group differences in electoral turnout and income, district ethnic composition, and MCs' ethnicity and party affiliation. We find that Latinos' unequal representation is not simply a function of the group's numerical minority status. Concentrating Latinos in congressional districts does not necessarily translate into more equal representation. However, several factors can enhance the equality of Latinos' representation—participation in elections and representation by both Latinos and Democrats.

https://www.jstor.org/stable/10.1111/j.1468-2508.2007.00605.x

The Unequal Representation of Latinos and Whites

Are the views of Latinos and African Americans underrepresented in our federal government? For that matter, what does it mean to be represented equitably? Rather than taking for granted a single answer to these complex questions, John D. Griffin and Brian Newman use different measures of political equality to reveal which groups get what they want from government and what factors lead to their successes.One of the first books to compare the representation of both African Americans and Latinos to that of whites, "Minority Report" shows that congressional decisions and federal policy tend to mirror the preferences of whites as a group and as individuals better than the preferences of either minority group, even after accounting for income disparities. This is far from the whole story, though, and the authors' multifaceted approach illustrates the surprising degree to which group population size, an issue's level of importance, the race or ethnicity of an office holder, and electoral turnout can affect how well government action reflects the views of each person or group. Sure to be controversial, "Minority Report" ultimately goes beyond statistical analyses to address the root question of what equal representation really means.

Minority Report: Evaluating Political Equality in America

Since the 1930s, polling organizations have asked Americans whether they “approve or disapprove of the job [the incumbent] is doing as president.” In the early 1970s, John Mueller started an academic industry by asking what drives these evaluations. American politics and the tools available to examine it have changed dramatically since then, inspiring a burst of research on presidential approval in the 1990s. We review this new body of literature, arguing that it builds on but differs importantly from earlier approval studies. Since Mueller’s writing, scholars have expanded his relatively simple model, taking account of presidents’ goals and personal characteristics, other political actors, the ubiquitous media, and an inattentive public. We describe three waves of research, focusing on the most recent wave. We suggest that history, along with new intellectual currents, data, and methods have enabled each wave to incorporate more of political, social, and psychological reality. Finally, we identify the is...

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Brian Newman

Papers

Are Voters Better Represented

The Unequal Representation of Latinos and Whites

Minority Report: Evaluating Political Equality in America

FDR to Clinton, Mueller to ?: A Field Essay on Presidential Approval

'Rally Round the Flag’ Events for Presidential Approval Research