CEO humility,narcissism and firm innovation: A paradox perspective on CEO traits

We examine how two seemingly contradictory yet potentially complementary CEO traits—humility and narcissism—interact to affect firm innovation. We adopt a paradox perspective and propose that individuals can have paradoxical traits and that, in particular, humility and narcissism can coexist harmoniously, especially among the Chinese, whose philosophical tradition embraces paradoxical thinking and behaving. CEOs that are both humble and narcissistic are hypothesized to be more likely to have socialized charisma, to cultivate an innovative culture, and to deliver innovative performance. Two studies using multisource data involving 63 CEOs, 328 top managers, and 645 middle managers in Study 1 and 143 CEOs and 190 top managers in Study 2 support the hypotheses and point to new directions for studying CEO traits and their effects on firm outcomes.     

Estimation of poisson means under weighted squared error loss

In estimating the means of several independent Poisson distributions, we show that the maximum likelihood estimator is inadmissible when general weighted squared error loss is the criterion. Using this result, we extend the known results on estimation of several Poisson means (Peng 1975, Hudson 1978) to the case where possibly more than one observation is taken from each Poisson distribution and the samples are not necessarily of the same size.     

Finding Place in Community Change Initiatives: Using GIS to Uncover Resident Perceptions of their Neighborhoods

The growing recognition that place matters has led to numerous foundation- and government-sponsored initiatives that attempt to simultaneously strengthen neighborhoods and address the needs of families that live there. Despite the centrality of the concept of neighborhood, these place-based initiatives have few tools to understand how residents identify with the space within their target areas. This article demonstrates how resident-drawn maps gathered in a household survey can be used to uncover individual and collective neighborhood definitions. Using data gathered as part of the Annie E. Casey Foundation's Making Connections program in 10 cities, the study finds that there is considerable variation among residents in how they define their neighborhoods, but that there are also commonly held neighborhood identities that need to be taken into account in community practice.     

A Study on the Sleep Patterns and Problems of University Business Students in Hong Kong

Abstract

Objective: To investigate sleep patterns and problems of university business students. Participants: Undergraduate Chinese business students in Hong Kong. Methods: Self-reported questionnaires were completed during class lectures and through online system. Results: Of the 620 participating students (mean age 19.9 years), sleep duration was significantly shorter during weekdays (6.9 hours) than weekends (8.6 hours). Two thirds of students reported sleep deprivation. The following factors were associated with being a “poor sleeper” (Pittsburgh Sleep Quality Index > 5): attending early morning lectures (odds ratio [OR] = 1.90), living on-campus (OR = 1.89), Sleep Sufficiency Index less than 0.8 (OR = 2.55), sleep debt (differences of total time-in-bed between weekday and weekend ≥ 75 minutes) (OR = 1.58), and minor psychiatric disturbances (OR = 2.82). Conclusions: Poor sleep quality and sleep deprivation were prevalent in university business students in Hong Kong, especially for those attending early morning lectures and living on-campus. Systemic education on the importance of sleep and stress and time management is needed for university students.     

Pregnancy avoidance and coital behavior

This study proposes a behavioral model that identifies determinants of coital activity in the context of pregnancy avoidance and assesses the relationships using weekly panel data collected on 300 rural married women in Sri Lanka in 1988. We discuss the utility of the design, which is similar to that of an epidemiological surveillance system, for the measurement of coital behavior and pregnancy risk perceptions. Perceptions of pregnancy risk, spousal agreement on sexual relations, menstrual and lactational status, and cycle timing, all measured daily, are found to influence significantly the probability of coitus on that day. The findings suggest that substantial gains in studying fertility regulation are likely from closer investigation of the behavioral connections between motivation for pregnancy avoidance and coital incidence. Comparison of such panel data with those of cross-sectional sample surveys also provides insights into the validity of measures of coital and contraceptive behavior.     

Bayesian mixture models for complex high dimensional count data in phage display experiments

Summary.  Phage display is a biological process that is used to screen random peptide libraries for ligands that bind to a target of interest with high affinity. On the basis of a count data set from an innovative multistage phage display experiment, we propose a class of Bayesian mixture models to cluster peptide counts into three groups that exhibit different display patterns across stages. Among the three groups, the investigators are particularly interested in that with an ascending display pattern in the counts, which implies that the peptides are likely to bind to the target with strong affinity. We apply a Bayesian false discovery rate approach to identify the peptides with the strongest affinity within the group. A list of peptides is obtained, among which important ones with meaningful functions are further validated by biologists. To examine the performance of the Bayesian model, we conduct a simulation study and obtain desirable results.     

Young women's work and family formation in Sri Lanka

"Patterns of family formation in Sri Lanka resemble those of wealthier nations, with late marriage, delayed childbearing, and moderately low fertility. This article addresses two questions: How have these family formation patterns emerged in the absence of the normally expected levels of economic development? And what activities have occupied young women in the premarital, prechildbearing period? Answers are suggested by data from three sources: the 1981 census; a set of focus-group discussions on the rights, obligations, and aspirations of young women related to marriage, work, childbearing, and child care; and a sample survey of 1,535 women of ages 15-30 in Kalutara District. The article describes the interplay of socioeconomic and familial forces that have affected the status of young Sri Lankan women."     

Measurement of income mobility: a re-examination

This paper reviews different characterizations of income mobility, trying to establish links between them and showing that some of them are equivalent. Furthermore, exploiting recent advances in multidimensional inequality measurement, we generalize mobility measurement from the two-period to the multi-period setting, come up with new ways to decompose total mobility into exchange as opposed to structural mobility, and introduce new indices of mobility with desirable properties.