Does purchasing power parity hold in African less developed countries? Evidence from a panel data unit root test

This study tests for long-run relative purchasing power parityamong a sample of 27 African less developed countries. For thispurpose, a new test advocated by Im and co-workers is employedwhich allows one to test for unit roots in heterogeneous paneldatasets. This is known as the t-bar test, by which purchasingpower parity is confirmed or rejected on the basis of whetheror not the average augmented Dickey-Fuller statistic based ondemeaned data is significantly different from zero. Using quarterlydata covering the period 1974-97, purchasing power parity isgenerally rejected using individual country unit root testsbut support is found using the t-bar test. This suggests thatlow power problems in testing for purchasing power parity canbe overcome using this panel data procedure. The findings alsosupport the view that purchasing power parity is most likelyto be found among high inflation less developed countries andthat the half-life of a one-off random shock to parity is approximatelysix quarters. These results are generally confirmed for the1960-73 period.     

The mandatory disclosure of trades and market liquidity

Financial market regulations require various 'insiders' to disclosetheir trades after the trades are made. We show that such mandatorydisclosure rules can increase insiders' expected trading profits.This is because disclosure leads to profitable trading opportunitiesfor insiders even if they possess no private information onthe asset's value. We also show that insiders will generallynot voluntarily disclose their trades, so for disclosure tobe forthcoming, it must be mandatory. Key to the analysis isthat the market cannot observe whether an insider is tradingon private information regarding asset value of is trading forpersonal portfolio reasons.     

Efficiency with costly information: a reinterpretation of evidence from managed portfolios

We investigate the informational efficiency of mutual fund performancefor the period 1965-84. Results are shown to be sensitive tothe measurement of performance chosen. We find that returnson S&P stocks, returns on non-S&P stocks, and returnson bonds are significant factors in performance assessment.Once we correct for the impact of non-S&P assets on mutualfund returns, we find that mutual funds do not earn returnsthat justify their information acquisition costs. This is consistentwith results for prior periods.     

Sarah Elvins. Sales and Celebrations: Retailing and Regional Identity in Western New York State, 1920-1940. Athens, Ohio: Ohio University Press, 2004. 222 pp. ISBN 0-8214-1549-2, $42.95 (cloth).

Elvins’s book is part of a growing body of historicalscholarship that interrogates the lived experience of consumersociety in the twentieth-century United States. Beginning whereWilliam Leach’s Land of Desire (1993) left off, Elvinsseeks to complicate "top-down" narratives of the homogenizationof American consumer culture into a national mass market. Takingher cue from Lizabeth Cohen’s early work on consumptionin Chicago, Elvins examines consumption on the local level in     

The Effects of Comparative Advertising Mediated by Market Position of Sponsoring Brand

An experimental test of the relative effectiveness of comparative and non-comparative advertising was performed. Mock print ads for fast food chains were constructed and presented to respondents in a simulated magazine mode. The market position of the sponsoring brand was manipulated in both comparative and non-comparative formats. Multiple criterion variables were operationalized corresponding to all stages of the hierarchy-of-effects paradigm. On balance, for the nine hypotheses tested, results revealed that non-comparative advertising was demonstrably more effective than comparative advertising.     

A Causal Model of the Impact of Skills, Synergy, and Design Sensitivity on New Product Performance

Notwithstanding the best efforts of outstanding managers, project team members, researchers, and consultants, no product development plan can guarantee success. Every new products organization will experience its fair share of failures, but a firm can take steps to ensure that its failures do not outweigh its successes. By benchmarking the competition, a firm can gain insight into best practices–the factors that lead most directly to new product success. To help identify these best practices, X. Michael Song, William E. Souder, and Barbara Dyer develop and test a causal model of the relationships among the key variables leading to new product performance. The proposed model identifies five factors that lead to marketing and technical proficiency: process skills, project management skills, alignment of skills with needs, team skills, and design sensitivity. According to the model, marketing and technical proficiency directly determine product quality, and ultimately lead to new product success or failure. The causal model was tested using information on 65 completed projects–34 successes and 31 failures–from 17 large, multi-divisional Japanese firms. The study participants develop, manufacture, and market high-technology consumer and industrial products. These firms judged the success or failure of the projects in this study by using seven criteria: return on investment, profit, market share, sales, opportunities for technical leadership, market dominance, and customer satisfaction. These firms generally assigned the greatest importance to customer satisfaction, opportunity creation, and long-term growth. For the most part, the responses from these firms support the relationships presented in the causal model. According to the respondents, marketing proficiency and product quality have a strong, positive influence on their new product performance, as do process skills, project management skills, and alignment of skills and needs. The responses highlight the importance to these firms of responsiveness to customer wants and needs, as well as ensuring a close fit between project needs and the firm's skills in marketing, R&D, engineering, and manufacturing. Somewhat surprisingly, the responses do not support the model's suggested relationships between skills/needs alignment and technical proficiency or between technical proficiency and product quality.     

Managing transformational change: the role of human resource professionals

In the past decade human resource management issues featured prominently in debates over the competitiveness and human resource professionals were expected to ascend to positions of greater influence in corporate strategy making and implementation. Despite numerous calls for a paradigm shift towards a more ‘strategic’ focus for human resource management research, developments in both practice and research fell far short of expectations. Thus, the process of transforming human resource policy into a strategic asset for employees, individual firms or the American economy is not yet complete. The paper suggests that the ‘strategic’ human resource management models of the 1980s were too limited and reactive in character because they depended so heavily on the values, strategies and support of top executives and line managers. A model capable of achieving sustained and transformational change needs to incorporate more active roles of other stakeholders in the employment relationship, including government, employes and union representatives as well as line managers and top executives. The paper starts by reviewing the evidence on innovations in human resource management in the past decade and then outlines the implications of the change model for human resource management and industrial relations theory, policy and practice. Special emphasis is given to the role of human resource professionals as potential change agents or facilitators of the transformational process.