Learning with noiseless information and payoff-relevant signals

Summary. In models of active learning or experimentation, agents modify their actions to affect the distribution of a signal that provides information about future payoffs. A standard result in the experimentation literature is that agents experiment, if at all, to increase information. This finding is a direct consequence of Blackwell's theorem: one experiment is more informative than another if and only if all expected utility maximizers prefer to observe the first. Blackwell's theorem presupposes, however, that the observed signal only conveys information and does not directly affect future payoffs. Often, however, signals are directly payoff relevant, a phenomenon that we call signal dependence. For example, if a firm is uncertain about its demand and uses today's sales as a signal of tomorrow's demand, then that signal may also directly affect tomorrow's profit if the good is durable or if consumers form consumption habits. Datta, Mirman and Schlee [9] and Bertocchi and Spagat [4] show that, if the signal is payoff relevant, experimentation may indeed reduce information. Here we show that, despite the inapplicability of Blackwell's Theorem, agents always experiment to increase information if the information structure is noiseless: given the true value of the unknown parameter, the signal realization is deterministic. We then apply our framework to analyze Lazear's [16] model of retail clearance sales, a model with both signal dependence and noiseless information. Received: February 19, 1999; revised version: August 11, 1999     

Effect of Merger on Market Price and Product Quality: American and US Airways

Review of Industrial Organization - In this paper, I analyze the effect of the merger between American Airlines (AA) and US Airways (US) on market price and product quality. I use...     

Indian business groups: Evolution and transformation

Business groups are an important constituent of many emerging economies. In this paper, we focus on the evolution and transformation of Indian business groups (IBGs) over two economic eras — pre-reform era (pre 1991) and reform era (post 1991). To this end, we analyze IBG behavior during these periods, and explain the implications of such behavior on IBG value creation. Our conceptualization of IBG dynamics utilizes the perspectives of product relatedness and institutional relatedness, and undertakes a broad review of the extant literature.

东亚垂直分工网络与技术梯度研究——基于零部件贸易的视角

东亚因其迅速发展的国际生产网络而得到经济学界的广泛瞩目。本文在整理相关理论和实证文献的基础上,通过对人均收入水平的分析提出了东亚区域内广泛存在技术梯度差异的现实。作者根据Jones等人提出的国际垂直分割理论,建立增广引力模型,在区分零部件贸易和传统贸易的情况下,利用联合国贸易统计面板数据,对东亚垂直分工网络的技术结构进行了细致梳理。结果显示,近年来日本在核心部件上的作用有所下降,而四小龙实现了技术升级,作用得到较大的提升。作为东亚生产共享网络中的重要一极,中国同四小虎之间呈现出较强的互补性而非替代性。     

The impact of management capability on the resource-performance linkage: Examining Indian outsourcing providers

The increase in offshore outsourcing of information technology-enabled business processes has renewed scholarly attention to better understand the dynamics of service provider firms. In this study, we examine how offshore outsourcing service providers’ internal and relational resources and capabilities jointly predict their economic performance. Analysis of data collected from a sample of 105 Indian service providers suggest that rent generation from firm-specific, idiosyncratic resources is positively moderated by the level of management capability possessed by such firms. Theoretical and managerial implications of the findings are discussed and avenues of future research are offered.     

Unpacking the Antecedents of Crowdfunding Campaign’s Success: The Effects of Social Media and Innovation Orientation

We applied a capabilities view as the theoretical underpinning to investigate the integrative role of orientation (IO) and the strategic use of social media (SSM) on a firm’s crowdfunding campaign success (CFS). We suggest that IO promotes a firm’s ability to succeed with crowdfunding campaigns, and that this relationship is mediated by the SSM. To check our contentions, we surveyed professionals from 322 firms that conducted crowdfunding campaigns. For IO and SSM, we used preexisting scales, while for CFS we created and validated our own seven‐item scale. We found that IO alone does not fully account for CFS, but rather its effect is based on a firm’s ability to SSM. Our findings contribute to the literature on strategic entrepreneurship, media strategy, and public policy.     

Governing new global health-care markets: the case of stem cell treatments

Stem cell innovation has enabled the growth of a global market of treatments for a wide range of diseases but most of this market operates outside the domain of orthodox forms of innovation governance. Much of the analysis of this issue has adopted a supply side perspective informed by the values of the orthodox scientific model of biomedical innovation, arguing that national and transnational regulation has failed to impose appropriate standards on the ‘illicit’ supply of stem cell treatments. In contrast, this paper shows how and why the analysis of global stem cell innovation governance must incorporate the market and health consumer demand into the conceptual framework. Central to the argument is the role of innovation models in mediating the relationship between demand and supply in the global market of new stem cell treatments. Different models of scientific and medical innovation mediate that relationship in different ways and, in jurisdictions where health consumer demand is frustrated, may result in parallel political demands for change in stem cell innovation governance. Such demands are likely to be resisted by the dominant scientific model, producing a further response from health consumers and a continuing dynamic in the political economy of stem cell treatments.     

Non-cognitive child outcomes and universal high quality child care

Exploiting a rich panel data child survey merged with administrative records along with a pseudo-experiment generating variation in the take-up of preschool across municipalities, we provide evidence of the effects on non-cognitive child outcomes of participating in large scale publicly provided universal preschool programs and family day care vis-à-vis home care. We find that, compared to home care, being enrolled in preschool at age three does not lead to significant differences in child outcomes at age seven no matter the gender or the mother's level of education. Family day care, on the other hand, seems to significantly deteriorate outcomes for boys whose mothers have a lower level of education. Finally, longer hours in non-parental care lead to poorer child outcomes.     

Production Costs,Scale Economies,and Technical Change in U.S. Textile and Apparel Industries

The elimination of quotas in textiles and apparel poses new threats from import competition. To survive, the sectors need to find least-cost methods of production. The production–cost structure of the U.S. textile and apparel industries is examined using a dual cost framework. A translog cost function is used to measure substitution elasticities between inputs, scale economies, and the nature of technical change. The scope for factor substitution in textiles remains limited with all substitution elasticities being less than unity. Labor and materials are complements in apparel production, but there is evidence of substitution between capital and labor. The rate of technical change is higher in textiles than in apparel. Given the intense import competition from low wage countries, in both industries, technical progress is labor saving. Overall, economies of scale are larger in apparel; however, scale economies have continued to increase in textiles.This research was supported by a grant from the National Textile Center.     

From Coping Strategies to Tactics: London's Low‐Pay Economy and Migrant Labour

This article examines the means by which low‐paid migrant workers survive in a rapidly changing and increasingly unequal labour market. In a departure from the coping strategies literature, it is argued that the difficulties migrant workers face in the London labour market reduces their ability to ‘strategize’. Instead, workers adopt a range of ‘tactics’ that enable them to ‘get by’, if only just, on a day‐to‐day basis. The article explores these tactics with reference to the connections between different workers’ experiences of the workplace, home and community, and demonstrates the role of national, ethnic and gender relations in shaping migrant workers’ experiences of the London labour market and of the city more widely.