Estimating panel data models in the presence of endogeneity and selection

We consider estimation of panel data models with sample selection when the equation of interest contains endogenous explanatory variables as well as unobserved heterogeneity. Assuming that appropriate instruments are available, we propose several tests for selection bias and two estimation procedures that correct for selection in the presence of endogenous regressors. The tests are based on the fixed effects two-stage least squares estimator, thereby permitting arbitrary correlation between unobserved heterogeneity and explanatory variables. The first correction procedure is parametric and is valid under the assumption that the errors in the selection equation are normally distributed. The second procedure estimates the model parameters semiparametrically using series estimators. In the proposed testing and correction procedures, the error terms may be heterogeneously distributed and serially dependent in both selection and primary equations. Because these methods allow for a rather flexible structure of the error variance and do not impose any nonstandard assumptions on the conditional distributions of explanatory variables, they provide a useful alternative to the existing approaches presented in the literature.     

The nonprofit sector's $100 billion opportunity

Imagine what an extra $100 billion a year could do for philanthropic and other nonprofit institutions. According to a new study, the nonprofit sector could free that amount--maybe even more--by making five changes in the way it operates. The study asked two central questions: Does the sector's money flow from its source to its ultimate use as efficiently and effectively as possible? If not, where are the big opportunities to increase social benefit? According to former senator Bill Bradley and McKinsey's Paul Jansen and Les Silverman, nonprofits could save roughly $25 billion a year by changing the way they raise funds. By distributing funds more quickly, they could put an extra $30 billion to work. Organizations could generate more than $60 billion a year by streamlining and restructuring the way in which they provide services and by reducing administrative costs. And they could free up even more money--an amount impossible to estimate--by better allocating funds among service providers. The authors admit that making those changes won't be easy. The nonprofit world, historically seen as a collection of locally focused charities, has become an enormous sector, but it lacks the managerial processes and incentives that help keep the for-profit world on track. And when the baby boomers start to retire in less than a decade, public budgets will be squeezed even more than they are today. If the nonprofit sector is to help the nation cope with the stresses ahead, it must become more efficient and challenge its traditional concepts of stewardship.     

Influence of cultural factors on price clustering and price resistance in China's stock markets

This paper builds on prior research by analysing the impact of cultural factors on both price clustering and price resistance in China's stock markets. The results support the presence of cultural factors impacting on price clustering with the digit 8 showing a higher propensity for clustering and the digits 4 and 7 showing a lower propensity in the A‐share market, where stock is denominated in renminbi and traded by mainland Chinese. These results are further supported by an analysis of the B‐share market, where cultural factors have no (or less) impact on the price of Chinese stocks traded by foreign investors in US dollars (or in Hong Kong dollars). A range of measures for price resistance show the digits 0 and 5 to be significant resistance points in the A‐share market. Although digit 8 cannot be considered as a resistance point, its resistance level is highest among the remaining numbers. In conclusion, cultural factors help to explain not only price clustering in the Chinese stock markets but price resistance levels as well, albeit at a weak level.     

Restoring balance: How history tilts the scales against privacy. An Actor-Network Theory investigation

In this paper we problematize the metaphor of balance employed in the area of information privacy. Using Actor-Network Theory we conduct an historical investigation into the continuous release of the same personal data over the course of eight decades. Through the examination of actual enactments of balance over time we find that, in practice, balancing acts are conducted at local levels by local actor-networks within organizations, with limited overall organizational knowledge, raising challenges around interpreting statements made by organizational spokespersons. We also find a surprising lack of knowledge possessed by these local actor-networks about what is subsequently done with personal data and the extent to which networks that extend beyond the organization gravitate towards and form around available data. Through tracing and revealing this historical Actor-Network Theory investigation provides a means of probing and examining actual acts of balance in the area of information privacy and, through revelation, aid in the creation of the possibility of bringing the act of balance more in line with the concept.     

A Tale of Two Models: Comparing structuralist and neoclassical computable general equilibrium models for South Africa

This paper compares two working models of the South African economy, an orthodox, neoclassical computable general equilibrium model in which savings drive investment, and a more structuralist, eclectic, model for which there is an independent investment function. Both models are calibrated to the same social accounting matrix. Comparative statics of simplified prototype models are presented and identical simulations with the corresponding applied versions are compared. It is seen that the neoclassical model fully supports the principles of the 'Washington Consensus' while the structuralist model requires a far more heterodox set of policies to avoid slow growth or high inflation.     

Japanese management style in China? Production practices in Japanese manufacturing plants

Through an examination of twenty Japanese owned manufacturing plants in China, this article seeks to question the usefulness of identifying Japanese competitive success as being associated with specific Japanese production management techniques. Rather Japanese plants adopt, seemingly profitably, various and differentiated production methods, depending on local and parent company circumstances.     

Business @ the Speed of Thought

Bill Gates' first book, "The Road Ahead", focused on the broad impact of technology. His new book, "Business @ the Speed of Thought", asks what this means for business. How should firms organize themselves differently? In what new ways should information flow? What metrics can managers use to judge how far down the path they are to what he calls the "digital nervous system" approach? In this article, Mr Gates comments on some of the themes of the book, including issues within Microsoft itself.     

Estimating Coaching Efficiency in Professional Team Sports: Evidence from English Association Football

This study provides a review of the literature on sporting production functions with an emphasis on different input‐output specifications and alternative estimation procedures. Empirical evidence is reported for English association football on the robustness of estimates of coaching efficiency to changes in estimation methods and the definition of team performance and playing talent inputs. A measure of player quality based on predicted start‐of‐season transfer values is developed. It is found that the estimation of coaching efficiency is sensitive to the choice of time‐invariant efficiency models versus time‐varying and inefficiency effects models. It is also found that the results are little affected by different measures of team performance but are highly sensitive to the use of an ex post financial expenditure input measure. Ex ante input measures based on start‐of‐season player characteristics or predicted transfer values are recommended as more appropriate on both theoretical and empirical grounds.     

A promotion mix budgeting model for retailing

Our two-equation model of retail promotion provides a well-balanced explanation of both retailers' perceptions of promotion tools and their budget allocation across the promotion mix. While previous studies have examined each of these two components separately, few have integrated both in the one study. Factor analysis was used to simplify the choices of promotion tools. This reduced the number of promotion tools to four, namely mass media, in-store promotion, sales promotion/direct mail and personal selling. We support earlier studies which link budget promotion mix spending (behaviour) to perceptions about the effectiveness of each medium (attitude). The range of determinants of perceptions has been extended by incorporating the roles of retail strategy, store ownership, culture and promotion intensity. We have estimated the budget promotion mix equation using a production function theoretical framework. Although this makes little difference to the strong relationship between retailers' perceptions of promotion tools and budget allocations, the theoretical framework does enable formal estimation of cross-media substitution. We find that the two short-term oriented promotion media are substitutes. Our model has been applied to apparel retailing in Australia, with considerable scope for applications to other retail categories and to other countries.