Effects of migration on the educational levels of the black resident population at the origin and destination, 1955–1960 and 1965–1970

Using the 1960 and 1970 census data, this paper analyzes the net effects of the interregional migration of black males on the educational levels of the resident black male population at the regions of origin and destination. Significant variations are observed in the educational selectivity of out-migrants from each region, by region of destination. Comparing the educational levels of the return migrants to the South with those of the resident population in the nonsouthern regions provides no evidence that the return migrants are "failed" migrants. The net effect of interregional migration on the educational levels of the black male resident population at the regions of origin and destination is insignificant in most age groups, for both the 1955--1960 and 1965--1970 periods. In particular, in-migration from the South to nonsouthern regions has little effect on the educational levels of the resident population in most age groups. In fact, for nonsouthern regions, out-migration is more detrimental to the educational level of the resident black male population than is in-migration from the South. Furthermore, the net effect of interregional migration has declined from the 1955--1960 period to the 1965--1970 period.     

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.     

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.     

Principal weighted logistic regression for sufficient dimension reduction in binary classification

Sufficient dimension reduction (SDR) is a popular supervised machine learning technique that reduces the predictor dimension and facilitates subsequent data analysis in practice. In this article, we propose principal weighted logistic regression (PWLR), an efficient SDR method in binary classification where inverse-regression-based SDR methods often suffer. We first develop linear PWLR for linear SDR and study its asymptotic properties. We then extend it to nonlinear SDR and propose the kernel PWLR. Evaluations with both simulated and real data show the promising performance of the PWLR for SDR in binary classification.     

Organizational innovativeness and its determinants in South Korean nonprofit human service organizations

This study compares the level of organizational innovativeness and its determinants in different types of nonprofit human service organizations. Based on theoretical conceptualizations of organizational innovation, it was hypothesized that community service organizations (CSOs) would be more innovative than residential service organizations (RSOs), and determinants of organizational innovation (such as organizations' characteristics, internal and external properties, and executive leadership) would influence innovativeness. Data from a survey of two types of human service organizations in South Korea (127 RSOs for children and 220 CSOs) revealed that the level of innovation in both types of organizations was not significantly different. The determinants of decentralization and formalization showed significant impacts on innovativeness in CSOs. Decentralization also had a significant positive effect on innovativeness in RSOs. However, executive leadership was a significant determinant of organizational innovativeness in CSOs only. Based on these results, administrative implications are suggested for the facilitation of organizational innovation in nonprofit human service organizations.     

Structural Relationship Analysis Among Variables of Mentoring Network Characteristics,Mentoring Functions,and the Working Attitudes of North Korean Defectors

This study was conducted with a purpose to examine the structural relationship among mentoring network characteristics, mentoring functions, and the work attitudes of North Korean defectors. One hundred twenty-one North Korean defectors participated in the study, who were involved in settlement programs in Seoul, Korea. Amos 20.0 and SPSS 21.0. were used for statistical analysis. According to the developmental network theory, mentoring network characteristics include: network range, number of networks, and network intimacy. Mentoring functions include: career function, role function, and psychosocial function. The results are as follows. Mentoring network characteristics have a positive (+) effect on mentoring functions (β?=?0.267, C.R.?=?2.329, p?<?.05) and mentoring functions have a positive (+) effect on work attitude (β?=?0.703, C.R.?=?6.748, p?<?.001). Mentoring characteristics also have an indirect effect on work attitude through mentoring functions (β?=?0.188). The results of this study implicate the need for expanding mentoring networks and developing mentoring functions for North Korean defectors in both formal and informal social network areas.     

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