Project Evaluation and Uncertainty in Practice: A Statistical Analysis of Rate-of-Return Divergences of 1,015 World Bank Projects

This article analyzes the World Bank's experience with projectevaluation for a sample of 1,015 projects by comparing estimatedrates of return at appraisal with reestimated rates of returnwhen construction works are completed, usually 5 to 10 yearsafter appraisal. The analysis highlights the high degree ofuncertainty in project analysis. A wide range of variables hasbeen introduced to explain the observed divergence in appraisaland reestimated rates of return, but only a relatively smallpart of the divergence can be explained, even with the benefitof hindsight. Project analysis thus has to cope with a largedegree of uncertainty, which the traditional methods of projectevaluation and selection have not been able to reduce.     

EVALUATING THE IMPACTS OF SUBSIDIES ON INNOVATION ACTIVITIES IN GERMANY

Innovations are a key factor to ensure the competitiveness of establishments as well as to enhance the growth and wealth of nations. But more than any other economic activity, decisions about innovations are plagued by failures of the market mechanism. As a response, public instruments have been implemented to stimulate private innovation activities. The effectiveness of these measures, however, is ambiguous and calls for an empirical evaluation. In this paper we make use of the IAB Establishment Panel and apply various microeconometric methods to estimate the effect of public measures on innovation activities of German establishments. We find that neglecting sample selection due to observable as well as to unobservable characteristics leads to an overestimation of the treatment effect and that there are considerable differences with regard to size class and between West and East German establishments.     

Organizational buying in selected Yugoslav firms

Findings from a study of 14 Yugoslav industrial marketing managers support two hypotheses on the behavior of buying centers: (1) membership in the buying center changes through the buying process, and (2) top management playing a ratifying role of choices to maintain long-term, stable relationships between suppliers and customers may substantially affect exchange behavior.     

The determinants of cross‐border bank flows to emerging markets

This paper studies the determinants of cross‐border bank lending on a panel dataset comprising 17 advanced and 28 emerging market economies from 1993 to 2008. The empirical framework is based on a gravity model of financial flows. Our main findings are that the decrease in cross‐border lending in the 2007–2008 crisis was mostly due to global rather than country‐specific risk factors, and that central and eastern Europe was less affected by this decrease than other emerging market regions because of its stronger financial and monetary ties with creditor countries, and its relatively sound banking systems. These results are fairly robust to several different specifications, sub‐samples and econometric methodologies.