Social media and political discussion: when online presence silences offline conversation

ABSTRACT

This paper explores the relationship between the use of social media, attitudinal strength, perceived opinion agreement with social ties, and willingness to discuss a political issue in different online and offline contexts. Unlike the anonymous environment of some Internet forums, social media are closely tied to the relationships and activities of everyday life. Social media increasingly make ties from offline contexts persistent online, and, because of the ambient nature of these technologies, awareness of the opinions, interests, and activities of social ties has become pervasive. As such, the use of social media is likely to affect everyday conversation about political issues in on- and offline contexts, including the home, workplace, social gatherings with friends, community meetings, and on social network sites (SNSs). Based on a national probability survey, we find that the use of SNSs (i.e., Facebook and Twitter) has a direct, negative relationship to deliberation in many offline settings. Some uses of these platforms are associated with having a lower, perceived opinion agreement with social ties. As part of a spiral of silence, this further reduces the willingness of social media users to join political conversations in some offline settings. Only those with the strongest attitudes on an issue are immune.     

Consumers’ responses to CSR activities: The linkage between increased awareness and purchase intention

The body of research showing the positive effects of corporate social responsibility (CSR) on consumer behavior has been growing steadily. However, previous studies have not characterized corporate behaviors in terms of their perception by consumers as significant CSR and researchers have paid little attention to consumers’ understanding of this notion of CSR. The present study explores the relationship between consumer awareness of CSR activities and their purchase intentions. This study employs a questionnaire survey involving Korean consumers. For the analysis, measurement scales for CSR activities and consumers’ purchase intention scales are respectively developed. From the results it is found that there is a significant positive relationship between these two parameters. This study finds out as CSR activities corporate social contribution and local community contribution affect consumers’ purchase intention while corporate environmental protection and contribution have no effects on consumers’ purchase intention.     

Bayesian analysis of panel data using an MTAR model

Bayesian analysis of panel data using a class of momentum threshold autoregressive (MTAR) models is considered. Posterior estimation of parameters of the MTAR models is done by using a simple Markov Chain Monte Carlo (MCMC) algorithm. Selection of appropriate differenced variables, test for asymmetry and unit roots are recast as model selections and a simple way of computing posterior probabilities of the candidate models is proposed. The proposed method is applied to the yearly unemployment rates of 51 US states and the results show strong evidence of stationarity and asymmetry.     

UNRAVELING THE ECONOMIC PARADOX OF FEMALE-HEADED HOUSEHOLDS IN MEXICO: The Role of Family Networks

An extensive amount of research has shown that female-headed households are among the most disadvantaged in the United States. By contrast, households headed by single mothers in Mexico have median per capita income levels that are the same or higher than those headed by men and are no more likely to be living in poverty. These findings are surprising, given the many disadvantages that Mexican women face in the labor market and the added difficulties for single mothers of managing work and family life. We propose four explanations for the relatively high income levels of female-headed households in Mexico: (1) female heads' more advanced stage in the life course compared to male heads, (2) the greater financial support they receive from extended family members, (3) the international migration of the partners of female heads, and (4) a selection process whereby only women with sufficient income head their own households, while others move into households headed by someone else. Using a nationally representative survey we find that economic transfers from relatives living within the country and abroad, as well as a selection effect explain female-headed households' relatively high income.     

On strategy-proof social choice correspondences

We introduce two new concepts of strategy-proofness for social choice correspondences based on the theory of preferences over sets of alternatives under complete uncertainty. One is based on Pattanaik and Peleg (Soc Choice Welf 1:113–122, 1984) and the other is based on Bossert et al. (Econ Theory 16:295–312, 2000). We prove that there is no social choice correspondence satisfying anonymity, neutrality, a range condition, and either of our concepts of strategy-proofness. An erratum to this article can be found at     

虚拟衍生企业的竞争力研究

本文主要介绍有关衍生企业和虚拟组织的最新学说。并且,在融合这两种学说的基础上,探讨政府科研机构转移高技术成果的新模式——虚拟衍生企业模式。以求说明建立虚拟衍生企业、迅速形成核心竞争力,对于发展落后国家的高技术产业具有极为重要的作用。结合中国实际,本研究认为,虚拟衍生企业模式为中国的科研体制和企业体制的改革提供了一条新思路。     

Double unit root tests for cross-sectionally dependent panel data

This paper proposes various double unit root tests for cross-sectionally dependent panel data. The cross-sectional correlation is handled by the projection method [P.C.B. Phillips and D. Sul, Dynamic panel estimation and homogeneity testing under cross section dependence, Econom. J. 6 (2003), pp. 217–259; H.R. Moon and B. Perron, Testing for a unit root in panels with dynamic factors, J. Econom. 122 (2004), pp. 81–126] or the subtraction method [J. Bai and S. Ng, A PANIC attack on unit roots and cointegration, Econometrica 72 (2004), pp. 1127–1177]. Pooling or averaging is applied to combine results from different panel units. Also, to estimate autoregressive parameters the ordinary least squares estimation [D.P. Hasza and W.A. Fuller, Estimation for autoregressive processes with unit roots, Ann. Stat. 7 (1979), pp. 1106–1120] or the symmetric estimation [D.L. Sen and D.A. Dickey, Symmetric test for second differencing in univariate time series, J. Bus. Econ. Stat. 5 (1987), pp. 463–473] are used, and to adjust mean functions the ordinary mean adjustment or the recursive mean adjustment are used. Combinations of different methods in defactoring to eliminate the cross-sectional dependency, integrating results from panel units, estimating the parameters, and adjusting mean functions yields various available tests for double unit roots in panel data. Simple asymptotic distributions of the proposed test statistics are derived, which can be used to find critical values of the test statistics.

We perform a Monte Carlo experiment to compare the performance of these tests and to suggest optimal tests for a given panel data. Application of the proposed tests to a real data, the yearly export panel data sets of several Latin–American countries for the past 50 years, illustrates the usefulness of the proposed tests for panel data, in that they reveal stronger evidence of double unit roots than the componentwise double unit root tests of Hasza and Fuller [Estimation for autoregressive processes with unit roots, Ann. Stat. 7 (1979), pp. 1106–1120] or Sen and Dickey [Symmetric test for second differencing in univariate time series, J. Bus. Econ. Stat. 5 (1987), pp. 463–473].     

Perceptions of Life Quality among the Korean Mass Public: Unraveling their Dynamics and Standards

South Korea is widely known as an Asian model of economic development and democratization. Yet until now, research has not shown whether the country’s successful transition to democracy and market capitalism has enabled ordinary citizens to experience a life of happiness and satisfaction in their private and public lives. To address this question, this study analyzes a 2002 Euromodule survey of the Korean electorate designed to appraise the quality of life as a whole and in its various important domains. Results of the analysis reveal that a substantial minority of South Koreans still leads undesirable lives full of unhappiness and dissatisfaction. Furthermore, among the socioeconomically deprived, more people report deteriorations rather than improvements in their living conditions over the past five years. On the basis of these findings, we conclude that the surging forces of democratization and marketization can hinder ordinary people from experiencing a better quality of life by motivating them to compare themselves with other people in better situations to a greater extent than they did under past circumstances.     

Avowed happiness as an overall assessment of the quality of life

The concept of happiness has been mistakenly identified with feelings of pleasure in recent studies of quality of life. This paper clarifies the meaning of the concept ‘happiness’ and establishes grounds for its proper use in scholarly research. In addition, an empirical test of four major accounts of happiness derived from a careful review of philosophical and empirical literature is undertaken to propose a theory of happiness. The theory suggests that happiness is primarily a product of the positive assessments of life situations and favorable comparisons of these life situations with those of others and in the past. The various personal characteristics of an individual and the resources in his command, such as sex, age and income, influence happiness mostly through their effects upon the two psychological processess of assessment and comparison.     

Environmental effects on perceptions of life quality in Korea

Both in industrialized and industrializing countries environment is widely believed to be an important contributing source of the quality which people seek to bring to their lives. Yet, quality of life researchers have made little effort to determine the exact nature of environmental effects on perceptions of quality of life. This paper examines the individual and joint effects of community, housing and household on the levels of satisfaction, dissatisfaction, pleasure, and worry which Korean people experience.