On building better construct measures: Implications of a general hierarchical model

Four problems occur in the scale development process: (a) defining the construct, (b) drawing items from multiple domains, (c) identifying dimensions, and (d) showing nomological validity. In order to minimize these problems, the authors propose a general hierarchical model (GHM) that provides an organizational structure for placing many of the individual difference constructs used in marketing and consumer behavior. Three principles, which were derived from the GHM, add to the current scale development paradigm: (a) Define and test the construct within a hierarchical network that includes antecedents and consequences, (b) define and test the construct's dimensionality, and (c) match the construct's items to its level in the hierarchical system. By using these steps in scale development, researchers can build more precise measures possessing higher levels of validity and reliability. © 2008 Wiley Periodicals, Inc.     

Arthur McIvor and Ronald Johnston. Miners' Lung: A History of Dust Disease in British Coal Mining

Over the course of the past two decades, historians have begunto pay serious and sustained attention to the history of occupationalhealth, much of it analyzing the role of social, economic, andpolitical factors in the medical recognition of industrial disease.Although much has been published about the British coal industry,this is the first book to address the issue of health and safetyin this critically important sector of the British economy.Miners’ Lung, building on the work done by Jo     

ONLINE FREE MARKETS AND ENTREPRENEURSHIP IN THE MUSLIM WORLD

For centuries, networks of free exchange enabled populations of the Islamic world to thrive. Today, by contrast, the largest Muslim countries lag in international measures of economic freedom. At this critical time, hundreds of online markets for 'telework' are bringing global business opportunities within reach of many in the Muslim and non-Muslim worlds alike. Individuals with internet access can directly engage in the global online economy without having to wait for the results of domestic policy liberalisation or needing to relocate in search of higher wages.     

Debt policy, corporate taxes, and discount rates

This paper applies the standard risk-neutral valuation framework to tax shields generated by dynamic debt policies. We derive a partial differential equation (PDE) for the value of the debt tax shield. For a class of dynamic debt policies that depend on the asset's free cash flows, value, and past performance, we obtain closed-form solutions for the PDE. We also derive the tax-adjusted cost of capital for free cash flows and analyze the conditions under which the weighted average cost of capital is an appropriate discount rate. Finally, we derive closed-form solutions for equity betas, which differ from the formulas that have traditionally been used to lever and unlever equity betas.     

Predicting workload requirements for scheduled health care services, with an application to radiology departments.

A model is developed for predicting workload requirements for scheduled health care services. The model is then applied to an actual planning problem for a radiology department. The probability distribution of future workload is represented by the convolution of two families of random variables such that a compound Poisson process adequately describes workload requirements. The model developed herein can be applied to a wide assortment of capacity-expansion problems that are characterized by discrete demands (e.g. number of jobs) occurring in a given period of time, where the amount of time needed to complete each job is a continuous random variable.     

Know-how transfer: the role of social,economic/competitive,and firm boundary factors

Using policy capture methodology, this study examines the effect of different contextual cues upon the know-how transfer efforts reported by 79 biotechnology R&D scientists. Theoretically, these different cues are believed to affect the scientists' expectation of reciprocity, and thus their know-how transfer behavior. Three types of contextual cues between the know-how source and recipient were studied: competitiveness, social relationship, and within or across firm boundaries. We find these cues are associated, in the expected directions, with know-how transfer effort. The findings support a general theory of reciprocity whereby social, competitive, and firm boundary cues have a summative effect upon the expectation of reciprocity and know-how transfer. This is the first study to examine how these cues taken together influence the know-how transfer decision. Copyright © 2008 John Wiley & Sons, Ltd.     

Mergers: Significance for structure,performance and public policy session comment

Chief, Center for Economic Studies, Bureau of the Census.