A Monte Carlo Study of Tests of Blockwise Weak Separability

Separability assumptions on functional structure have received a great deal of attention from econometricians and economic theorists because (a) separability provides the fundamental linkage between aggregation over goods and the maximization principles in economic theory, (b) separability provides the theoretical basis for partitioning the economy's structure into sectors, and (c) separability provides a theoretical hypothesis, which can produce parameter restrictions, permitting great simplification in estimation of large demand systems. The power of the various available tests for separability has never been determined, however. We conduct Monte Carlo studies to examine the capability of currently available methods to provide correct inferences about separability.     

Reciprocal interactions between group perceptions of leader charisma and group mood through mood contagion

Departing from the static perspective of leader charisma that prevails in the literature, we propose a dynamic perspective of charismatic leadership in which group perceptions of leader charisma influence and are influenced by group mood. Based on a longitudinal experimental study conducted for 3 weeks involving 116 intact, self-managing student groups, we found that T1 group perceptions of leader charisma mediate the effect of leader trait expressivity on T2 positive and negative group moods. T2 positive and negative group moods influence T3 distal charisma perceptions by affecting T2 proximal perceptions of leader effectiveness. The current findings offer critical insights into (a) the reciprocal relationship between group perceptions of leader charisma and group mood, (b) the dynamic and transient nature of group perceptions of leader charisma, (c) the importance of understanding negative mood in charismatic leadership, and (d) the mechanism through which charismatic leadership perceptions can be formed and sustained over time.     

Does market competition facilitate resident-centred care among nursing homes? A comparative analysis

This study examines the impact of market competition on resident-centred care in nursing homes, through a comparative analysis of non-profit and for-profit settings. The study was carried out in South Korea, where the nursing care market has recently expanded dramatically. Data was collected through a self-administered questionnaire, mailed to 1000 random participants nationwide. The findings are drawn from 239 nursing homes that completed the survey and indicate that perceived competition is positively associated with resident-centred care in non-profit settings, but not in for-profit settings. The study presents implications for practice and future research.     

Technological alliance portfolio configuration and firm performance

Firms pursuing technological alliances to gain competitive advantages have become a ubiquitous phenomenon in today’s business environment. This article examines which technological alliance portfolio configuration is better for focal firm performance using a portfolio rather than a dyadic perspective. To assess technological alliance portfolio effects on Korean pharmaceutical and biotechnology firms, we adopted three explanatory variables—number of alliances, number of partners, and spanning structural holes. The growth rate of revenue and the growth rate of profit are used as dependent variables. We identify two characteristics of technological alliance portfolios from the two-step generalized method of moments estimates. First, we find that between two firms with the same number of alliances, the firm with the larger number of partners would have a better performance. This result is unlike those in previous studies because it distinguishes between the number of alliances and number of partners based on the network theory. Second, we find that spanning structural holes affects firm performance rather like a double-edge sword—it positively affects the growth rate of profit but negatively affects the growth rate of revenue of firms. In short, spanning structural holes is simultaneously beneficial for firm profitability and unfavorable for firm growth. This result differs from those of earlier studies because it shows that a firm spanning structural holes among alliance partners produces either a positive or a negative effect, suggesting that a firm should vary its strategy depending on whether it prioritizes profitability or growth.     

COMMUNICATION,COORDINATION, AND NETWORKS

We study experimentally the role of the network structure of pre‐play communication in determination of outcome and behavior in a multiplayer coordination game with conflicting preferences. We explore the trade‐off between the efficiency and equity of coordination outcomes and its link to the network structure of communication. Our results show substantial variations in both efficiency and equity of coordination outcomes across networks. While, as expected, increasing the length of communication improves the chance of successful coordination, it also reduces the asymmetry in the distribution of coordinated outcomes. We identify behaviors that explain variations in the distribution of coordinated outcomes both within and across networks. In all treatments, coordination is mostly explained by convergence in communication.     

Dealing with Endogeneity to Understand the Societal Impact of the Third Sector: Why Should We Care and What Can We Do about It?

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Endogeneity is often regarded as a key barrier in establishing the causal relationship between the third sector and its...     

Risk analysis models and risk degree determination in new product development: A case study

This paper proposes a risk analysis model to determine the risk degrees of the risk factors occurring in product development processes. The model uses both fuzzy theory and Markov processes on a concurrent engineering (CE) basis. Fuzzy models determine the impact values of the risk factors, and Markov processes determine the probability of risk occurrences. The analysis model is used to compute the risk degrees by multiplying the probability of risk occurrences by the impact value. This study can be utilized for analyzing the influences of risk factors on product development projects and will contribute toward the development of a risk management framework (RMF) to defend against various risk factors. Implications and directions for future research are discussed.     

Comparison of Temperament and Character Between Early- and Late-Onset Korean Male Pathological Gamblers

Purposes  

We investigated differences in temperament and character between early and late onset Korean pathological gamblers to identify whether the age of onset of pathological gambling (PG) could discriminate PG subtypes, like in alcoholism.     

Career Development and School Success in Adolescents: The Role of Career Interventions

Using longitudinal survey data, the present study examined the effect of participation on career development skills in 6 career education experiences and school success among South Korean adolescents (2,473 young men, 2,132 young women; mean age = 15.86 years). Regression analyses indicated that students who participated in career education programs in school once or twice over a 2‐year period had the highest scores in both career development skills and school success. In contrast, there was no relationship between career education, career development skills, and school success for students who participated in career education programs only once or not at all. Results support the influence of career education interventions on students' career development skills and school success. This study provides accountability information on the effectiveness of career education interventions at South Korean secondary schools. The authors offer suggestions about more effective career interventions that can be applied in South Korean high schools.