Evaluating Transport Infrastructure Projects in Low Data Environments: An Application to Nigeria

Transport infrastructure consumes a large fraction of the development assistance envelope. Yet procedures for evaluating transport infrastructure projects are typically ad-hoc. This paper proposes an approach to assess the differential impacts of alternative investment proposals in data constrained environments where conducting reliable impact analyses is difficult. We first demonstrate a technique for estimating the cost of transporting products to markets. We then estimate the impact of improving the road network on economic activity. Finally, we perform simulations to demonstrate a methodology for prioritising alternative investments. The analysis demonstrates a pragmatic, though rigorous, approach for assessing transport infrastructure benefits.     

Eating Regulation Styles, Appearance Schemas, and Body Satisfaction Predict Changes in Body Fat for Emerging Adults

Obesity and high body fat percentages are a major public health issue. The percentage of obese and overweight Americans has increased over the past 30 years. On average, overweight individuals with higher percent body fat than normal weight individuals are at increased risk for numerous negative outcomes both physically and mentally. A prime time to investigate changes in body composition and associated psychological influences on decision making is during the emerging adulthood period. The first few years of college are a time when adolescents begin to regulate for themselves their own eating behaviors. Previous research shows that freshmen gain weight and increase in percent body fat during their first year of college. The current study addresses the limitations of previous research by investigating (1) individual growth in percent body fat over a longer period of time in college than previous available research and (2) important psychological and sex differences in this growth. This study measures percent body fat across the first 3 years of college at 8 time points for 542 undergraduates (351 females, 65 %; 191 males, 35 %). Longitudinal data analysis was conducted to identify changes in percent body fat, psychological predictors of those changes, and how changes differ for males and females. Our study found that significant increases exist in percent body fat during undergraduates' college years and that change differs for males and females. In addition, through the use of nested hierarchical models, eating regulation style (autonomous or controlled regulation), appearance schema (self-evaluative salience or motivational salience), and body satisfaction were identified as influential predictors of change in percent body fat. For example, young females, who do not feel in control of their physical appearance yet spend a great deal of time maintaining their appearance, have the highest initial body fat percentage and the steepest increase in percent body fat. Overall, males and females with high autonomous regulation and high motivational salience are likely to maintain (instead of increase) percent body fat over the college years. Knowing the influence of these predictors can be useful for promoting health and intervening with young adults in the college setting and other emerging adults who are not enrolled in postsecondary institutions.     

Political Economy of Grant Allocations: The Case of Federal Highway Demonstration Grants

This article examines the political economy of U.S. federalhighway demonstration grant allocations. Demonstration grantsare a rapidly growing segment of federal highway grants directlyearmarked for a congressional district by Congress, unlike themajority of highway grants where Congress determines a formulaand allocates funds accordingly to states. Our empirical analysis,considering the period 1983–2003, suggests that a state'sability to attract demonstration project grants is positivelyinfluenced by its contributions to the highway trust fund andpolitical variables, and it is not affected by the formula highwayaid and vehicle miles traveled in a state.     

Statistical Backwards Induction: A Simple Method for Estimating Recursive Strategic Models

Curtis S. Signorino 303 Harkness Hall, Department of Political Science, University of Rochester, Rochester, NY 14627 e-mail: curt.signorino{at}rochester.edu Robert W. Walker Department of Political Science, Center for Applied Statistics, Washington University in Saint Louis, Campus Box 1063, One Brookings Drive, St. Louis, MO 63130 e-mail: rww{at}wustl.edu e-mail: mbas{at}gov.harvard.edu (corresponding author) We present a simple method for estimating regressions basedon recursive extensive-form games. Our procedure, which canbe implemented in most standard statistical packages, involvessequentially estimating standard logits (or probits) in a manneranalogous to backwards induction. We demonstrate that the techniqueproduces consistent parameter estimates and show how to calculateconsistent standard errors. To illustrate the method, we replicateLeblang's (2003) study of speculative attacks by financial marketsand government responses to these attacks. Authors' note: Our thanks to Kevin Clarke, John Londregan, JeffRitter, Ahmer Tarar, and Kuzey Yilmaz for helpful discussionsconcerning this paper. A previous version was presented at the2002 Political Methodology Summer Meeting.     

Political transitions and commissions of inquiry: the politicisation of accountability in Ghana

Abstract

What role does a commission of inquiry (COI) play in delivering accountability? In theory, when the public delegates power to political leaders to formulate and implement policies, they seek political accountability in return. Using Ghana as a case study, this study examines how the operations of COIs may deliver accountability. Principal–agent theories of accountability and African conceptions of legitimacy are incomplete on their own and need to be integrated into an explanation of political accountability that takes into consideration political transitions and the role of COIs in delivering a minimalist form of accountability. This study argues that a COI is an instrument of regime legitimatisation. The demands by citizens for political accountability in Ghana correlate with political transitions. Accompanying each power alternation was a different model of political accountability. To understand the predominant applications of accountability, we emphasise the politicisation of accountability.     

The Mediating Role of Ethical Climate in the Relationship Between Performance Appraisal and Organizational Performance

Although prior research has consistently established a positive relationship between performance appraisal and organizational performance across different research contexts, the mechanisms that underlie this link remain unclear. The present study attempts to fill this void by testing the mediating role of ethical climate in the relationship between performance appraisal and organizational performance across 181 Nigerian public sector agencies. Cross-sectional mediation analyses were performed using partial least squares path modeling approach. Results indicated that performance appraisal was positively and significantly related to organizational performance. Regarding the mediating effect, ethical climate significantly mediated the relationship between performance appraisal and organizational performance. The study made recommendations and drew suggestions for future research to enhance the performance of public sector agencies.     

Determination of impurities in illicit methamphetamine samples seized in Iran

In this study fifty samples of crystalline methamphetamine obtained from antinarcotics police of Iran seized during the year 2010 were analyzed. In order to determine the chemical characteristics of these samples, anion test, Gas Chromatography-Mass Spectrometry (GC-MS) and Liquid Chromatography-Mass Spectrometry (LC-MS) were carried out on the samples. All of the samples containing methamphetamine tested positive for chloride anion. The range of methamphetamine hydrochloride content in these samples was 33-95%. One sample out of 50 contained no methamphetamine. The fact that 1,2-dimethyl-3-phenylaziridine was the most frequently found impurity in the analyzed samples, indicates that most of the methamphetamine samples seized in Iran have been synthesized from pseudoephedrine as starting material.