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A growing body of literature confirms the existence of different social models, identified according to different combinations of policies and institutions. Knogler and Lankes aim to contribute to this literature by exploring characteristics of social policies in the enlarged European Union. The analysis is based on a set of social policy indicators with a focus on labour markets. By means of Principal Component Analysis they identify four major dimensions of social models. The dimensions are used as a basis for clustering countries into social models, which significantly differ from the commonly proposed regional classification of social models prior to enlargement.

The Kazakhstan Migration and Remittances Survey (KMRS) data were collected in the framework of the research project "Migration and Remittances in Central Asia: The Case of Kazakhstan and Tajikistan", which was funded by the Volkswagen Foundation in 2009-2013. The KMRS 2010 was designed and implemented by the Institute for East- and Southeast European Studies Regensburg, Germany, in cooperation with the Center for Study of Public Opinion (CIOM) Almaty, Kazakhstan.

International climate cooperation needs to be negotiated among sovereign countries. The key to cooperation, and to countervail free riding, is reciprocity. Using game theory and a human subject experiment, we show that reciprocity can be built into the negotiation design. Human players negotiating a reciprocal common commitment are substantially more successful in promoting cooperation than when negotiating individual commitments. Moreover, focusing on a uniform common commitment strongly facilitates agreement, as compared to negotiating a vector of commitments, one for each player. Because a carbon price is a natural candidate for a uniform common commitment, our findings suggest that international climate negotiations should focus on reciprocal carbon pricing. Economists advocate carbon pricing for its cost efficiency, yet the role of carbon pricing for promoting cooperation could be at least as important.

The research dataset 'Statistics on international financial and capital transactions (SIFCT)' provides the microdata collected by the Deutsche Bundesbank for the compilation of the financial account, capital account and investment income of the German balance of payments statistics. The research dataset provides detailed information on capital transfers receivable and payable between residents and nonresidents, the acquisition and disposal of nonproduced, nonfinancial assets as well as transactions involving financial assets and liabilities and investment income. It is supplemented by the country of the counterparty and the sector classification of the resident firm. The research data are available from 2001 as a panel dataset with a monthly frequency.

E- Government and Democracy in Botswana. Observational and experimental evidence on the effects of e-government usage on political attitudes. Online Appendix. Appendix A: Regression results of the observational analysis; Appendix B: Survey design; Appendix C: Questionnaire

The Parties' Immigration and Integration Positions Data Set (PImPo) includes data on parties' immigration and integration positions and saliency in 14 countries (Australia, Austria, Canada, Sweden, Denmark, Finland, Germany, Ireland, Netherlands, New Zealand, Norway, Spain, Switzerland, USA) between 1998 and 2013 based on crowd coding of parties' election manifestos. The data set entails variables on immigration and integration positions and saliency for each party in one election.
PImPo also gives data on the quasi-sentence level. Variables here include information on the topic of the quasi-sentence (immigration, integration, or none of both), the direction (supportive, sceptical, neutral), as well as information on agreement levels between crowd coders for each quasi-sentence. To make full use of this quasi-sentence level data, the original verbatim of each sentence can be added through a simple merge with the Manifesto Corpus (Lehmann, Pola / Matthieß, Theres / Merz, Nicolas / Regel, Sven / Werner, Annika (2015): Manifesto Corpus. Version: 20150708174629. Berlin: WZB Berlin Social Science Center.).
For detailed information on the dataset and its generation, please see Pola Lehmann, Malisa Zobel (2018): Positions and Saliency of Immigration in Party Manifestos. A Novel Data Set using Crowd Coding. European Journal for Political Research. Online First