Labor supply flexibility and portfolio choice in a life cycle model

This paper examines the effect of the labor-leisure choice on portfolio and consumption decisions over an individual's life cycle. The model incorporates the fact that individuals may have considerable flexibility in varying their work effort (including their choice of when to retire). Given this flexibility, the individual simultaneously determines optimal levels of current consumption, labor effort, and an optimal financial investment strategy at each point in his life cycle. We show that labor and investment choices are intimately related. The ability to vary labor supply ex post induces the individual to assume greater risks in his investment portfolio ex ante.     

Primary-school class composition and the development of social capital

We study the development of social capital through adult civic engagement, in relation to social capital exposure having occurred during childhood based on experiences outside the family at primary school. We assume that the types of classmates in attendance at a child's school would have influenced her/his social capital. To identify the types of classmates, we take advantage of the heterogeneity in the ability levels of British primary-school classes during the 1960s. At that time, some schools were practicing a method of streaming, whereas others were not. Using British National Child Development data, we construct a single score of civic engagement and evaluate the effect on adult civic engagement of attending homogeneous-ability classes versus nonhomogeneous-ability classes and being in high-, average- or low-ability classes when enrolled in streamed schools. Our results show that children who were grouped in homogeneous-ability classes developed a lower interest in civic engagement than their peers who attended mixed-ability classes (nonstreamed schools). Moreover, among children who attended streamed schools, a lower attitude toward civic engagement was observed among low-ability students. Thus, streaming appears to be detrimental to social capital development, especially for low-ability individuals.     

On the optimal number of scale points in graded paired comparisons

In market research, it is common practice to measure individuals’ brand or product preference through graded paired comparisons (GPCs). One important decision concerns the (odd) number of scale points (e.g., five, seven, nine, or eleven) that has to be assigned to either brands or products in each pair. Using data from an experiment with 122 students, we assessed the extent to which GPCs with a higher number of scale points (requiring more cognitive effort) really outperform GPCs with a smaller number of scale points (requiring less cognitive effort). Our data analyses have shown that one may reduce the (odd) number of scale points from eleven to nine or seven, depending on what minor compromises one is willing to make. The detailed psychometric results presented in this paper are useful to applied researchers as they help them in making well-informed decisions on the number of scale points in a GPC task.     

Too smart for their own good? A study of perceived cognitive overqualification in the workforce

This study examined the concept of cognitive overqualification, the possession of a higher level of cognitive ability than is required for a given job. Among 156 US based customer service representatives, cognitive overqualification was found to be associated with job dissatisfaction, but was only weakly related to measures of job and training performance. The results of this study provide support for the common practice among personnel managers to reject overqualified job applicants, as these individuals may be more likely to develop negative job attitudes, although not necessarily in anticipation of their poorer job performance.     

Financial forecasting and risky decisions: an experimental study grounded in Prospect theory

This study employed prospect theory to examine relationships between effort invested in developing financial forecasts and risk taking. Results of an experimental study indicated that the more effort subjects invested in developing forecasts, the more likely they were to use those forecasts as their reference points when evaluating venture performance. Results also indicated that subjects who used forecasts as their reference points and exerted greater effort developing those forecasts were more likely to take risky actions when performance fell below their reference points. This study is the first to link effort to the type of reference point used and the first to link effort and the use of financial forecasts to risky decisions. In addition, it is one of only a few studies to employ prospect theory to examine risk taking decisions subsequent to start-up. Its results enhance our understanding of risk taking, prospect theory and reference points.

     

Use of the net present value criterion in a random job shop where early shipments are forbidden

Both practitioners and researchers in the field of Operations Management have suggested that shop scheduling should be an integral component in both the strategic and tactical plans for an organization's assets. This paper examines the use of an accepted measure of return on assets, net present value (NPV), in a simulated shop scheduling environment where early shipment of jobs before their due dates is forbidden. In addition, early shipment of raw materials to the shop is also forbidden. This shop environment is consistent with the prevalent practice in industry of accepting orders only on a just-in-time basis to reduce purchased parts inventories. The NPV measure provides a means of balancing a variety of performance criteria that have been treated as separate objectives previously, including work-in-process inventory, finished goods inventory, mean flow time and mean tardiness, while also providing a means of measuring monetarily the value of various shop scheduling approaches.The NPV performance of priority scheduling rules and order release policies is measured in this research through the simulation of a random job shop under a variety of environmental conditions. It is found in a comparison of priority rules that use time-based information with those that use job value information that the Critical Ratio rule provides higher average performance than the three other rules used in the study. However, in some situations that are consistent with JIT practice, value-based priority rules also perform well. The use of a mechanism for delaying the release of jobs to each work center in the shop provided higher average NPV when shop utilization was set at a low level of 80%, while immediate release of work upon its arrival to the shop provided superior performance at a higher shop utilization level of 94%. While JIT materials delivery and costing yields higher NPV, it did not alter the relative ranking of priority rule/release policy combinations. In addition, it was found that environmental factors, including average job length, average number of tasks per job and level of tardiness penalty, resulted in greater variations in NPV performance than the institution of a JIT raw materials delivery policy.     

Contract design in dynamic agency: An experimental analysis

This paper reports results from an experiment studying contract design in a dynamic 2‐period agency relationship with unobservable effort. A deferred compensation contract is theoretically optimal—it places all incentives on the outcomes in the second period. Observed contract choices offer a substantial part of the incentives for the high outcome in the first period suggesting a strong preference for timely rewards. Information about theoretically optimal bonuses and effort decisions shifts contract choices towards a deferred compensation contract. This contract structure is more profitable for principal participants.     

An empirical investigation of scheduling performance criteria

Planning and scheduling significantly influence organizational performance, but literature that pays attention to how organizations could or should organize and assess their planning processes is limited. We extend planning and scheduling theory with a categorization of scheduling performance criteria, based on a three-stage survey research design. Particularly, the results show that, next to schedule quality, the planning process factors timeliness, flexibility, communication, and negotiation are important performance criteria, and especially so in organizations that are faced with high levels of uncertainty. The results suggest that organizational and behavioral aspects of planning and scheduling cannot be mitigated with advanced models and software that solely focus on good schedules. Rather, high quality schedules and high quality scheduling processes need to be facilitated simultaneously to attain high planning and scheduling performance.     

School Choice and the Distributional Effects of Ability Tracking: Does Separation Increase Inequality?

Tracking programs have been criticized on the grounds that they harm disadvantaged children. The bulk of empirical research supports this view, but existing studies compare outcomes across students placed in different tracks. Track placement is likely to be endogenous with respect to student outcomes. We use a new strategy for overcoming the endogeneity of track placement and find no evidence that tracking hurts low-ability children. Previous studies have also been based on the assumption that students' enrollment decisions are unrelated to whether or not the school tracks. When we account for the possibility that tracking programs affect school choice, we find evidence that they may help low-ability children.     

Is the doctor in? A relational approach to job design and the coordination of work

When designing jobs, the degree of specialization is a key consideration. Though functional specialization allows workers to develop deep areas of expertise, it also increases the challenge of coordinating their work. In this article, we propose the concepts of stage‐ and site‐based specialization and posit that together they can counteract the divisive effects of functional specialization. Taking advantage of a natural experiment in physician job design at a Massachusetts hospital, we explore the impact of stage‐ and site‐based specialization on coordination and performance outcomes. Building on recent interest in relational approaches to job design, this study is the first to link relational job design to relational outcomes such as coordination. Our findings have practical implications for job design in professional service settings such as education, consulting, and health care. © 2008 Wiley Periodicals, Inc.     

Sex-Role Stereotyping, Gender Biases, and Job Selection: The Use of Ordinal Logit in Analyzing Likert Scale Data

Sex-role stereotyping and gender biases are examined in a study of 246 individuals. Results show that previous gender biases in job selection have all but disappeared; however, biases still seem prevalent in the assessment of individuals' long term success on the job. Specifically, the findings showed that while gender biases are found only slightly in the hiring decisions of male and females evaluators, the perception of the applicant's future job performance was generally less favorable toward the female applicant as compared to males. An important contribution of this study is in the methodology. It introduces the use of an ordinal logit framework which improves upon previous research by exploiting the simultaneous and ordered nature of a Likert scale.     

Job involvement and performance among middle managers in Sri Lanka

This paper examines performance evaluation outcomes for middle managers in the garment sector in Sri Lanka and seeks to explain variations in levels of job involvement and perceptions of organizational support. Some 155 middle managers across three firms were segregated into high- and low-performing groups. High-performing managers tended to have higher perceptions of organizational support, resulting in a social exchange relationship with their employer, and expressed higher job satisfaction and lower turnover intentions. Managers assessed as low performers experienced more negative perceptions of organizational support, lower job satisfaction and an economic exchange relationship with their employer. Significantly, for both high and low performers these outcomes were moderated by job involvement. These findings highlight the need for organizations to pay careful attention to the factors influencing job involvement and perceived organizational support. The paper concludes with a discussion on the practical implications of the findings for human resource managers.     

A Tale of Passion: Linking Job Passion and Cognitive Engagement to Employee Work Performance

We propose a model of job passion that links two types of passion, harmonious and obsessive passion, to employees' work performance, via the mediating mechanism of cognitive engagement (comprising attention and absorption). Results from a survey conducted with 509 employees from an insurance firm indicate that employees with harmonious passion performed better at work, and that this relationship was mediated primarily by cognitive absorption, that is, the intensity of focus and immersion experienced by the employees when working. However, even though obsessive passion was negatively related to cognitive attention (i.e. the amount of cognitive resources spent thinking about work), it did not have a significant relationship to work performance overall. We identify and discuss research and practical implications for job passion and performance management.     

How images about emerging economies influence the willingness to accept expatriate assignments

Countries’ image is a multifaceted construct. Its symbolic dimensions have shown to play an important role both on consumer behavior and on the attraction that organizations can have during the recruitment process. This paper offers a comprehensive model of international mobility decisions encompassing the antecedents and consequences of perceptions about emerging economies, proposing that country image depends on individuals’ background and social identities. In this context, countries’ evaluations can play a major role on influencing the willingness to accept expatriate job offers. We used a within-subject design asking for opinions about hypothetical job offers on six particular host countries: Algeria, Democratic Republic of Congo, Argentina, Chile, Angola and Mozambique. Survey results from more than 500 engineers, (125 French nationals, 121 Spanish and 131 Portuguese, with the remaining 138 coming from 42 different countries, yet working in 1 of the 3 above-mentioned European countries), evidence, that language proficiency influences the evaluation of specific expatriate locations. Our results also convey the critical role of the perceived level of safety and cultural attraction in predicting the willingness to accept expatriate job offers. We conclude by discussing the theoretical and practical implications for human resource management.     

Equity‐based incentive contracts and behavior: Experimental evidence

Equity ‐ based incentive contracts provide managers with dual incentives, motivating both effort and fraud. We report the results from an experiment in which manager subjects make effort and fraud decisions that affect a firm's value. The main treatment variable is the incentive contract, which can be of either the simple equity or stock option type. We find that both effort and fraud are increasing in a manager's share of equity and decreasing in the strike price of an option. Interestingly, the stock option contract induces relatively more fraud than the simple equity contract, even though the two induce the same effort.     

基于利润分配机制的农产品供应链分析

通过在农产品物流中引入供应链管理理论。提出未来农产品物流的竞争就是农产品供应链之间的竞争。运用利润分配机制模型。指出供应链各参与主体的能力和努力程度取决于供应链中的利润是否有效配置，而努力程度与能力水平决定了农产品供应链的整体绩效。最后，有针对性地提出了我国农产品供应链的改进思路。     

The effect of noise in a performance measure on work motivation: A real effort laboratory experiment

This paper reports the results of an individual real effort laboratory experiment where subjects are paid for measured performance. Measured performance equals actual performance plus noise. We compare a stable environment where the noise is small with a volatile environment where the noise is large. Subjects exert significantly more effort in the volatile environment than in the stable environment. This finding is in line with standard agency theory and contrasts the intuitive idea captured by a distinct element of expectancy theory that noisier performance measures would lower work motivation.     

The impact of job training on temporary worker performance: Field experimental evidence from insurance sales agents

Despite the limited incentives they provide for idiosyncratic investment, temporary work arrangements are becoming increasingly common. Using evidence from a field experiment conducted among salespeople in a Kenyan insurance firm, this paper examines the consequences of providing job training for temporary workers. The findings show that providing access to training significantly increases firm revenue, primarily due to performance increases among higher‐ability workers. The findings from the study are consistent with temporary workers willingness to invest in job training when the job‐specific returns from doing so are sufficiently high.     

《消防燃烧学》开展实验教学的研究与实践

根据昆明消防学校培养消防部队基层指挥人才的要求,在《消防燃烧学》教学中开展实验教学,是使学员将教材知识点通过实验进行验证,深入理解及加深记忆的过程,从而进一步使理论知识与消防工作实际相结合,提高灵活运用知识去进行防火和灭火工作的能力,培养学员分析和解决火灾或爆炸事故的预防和控制等方面的能力,使培养出的学生满足消防工作实际要求的较好的教学方法。本文对在消防学校《消防燃烧学》教学中开展实验教学进行了研究与实践。