ECONOMIC GANGSTERS: CORRUPTION, VIOLENCE, AND POVERTY OF NATIONS by Raymond Fisman and Edward Miguel, Princeton University Press, Princeton, 2008, 250 pages, ISBN 978-1-4008-2875-3.

The world of developmental economics is very much like trying to find your way through a maze in the dark. This maze however consists of dead ends, like: poverty, stagnant growth, war, violence and cultural diversity. When successfully navigated economists could discover why some nations stay poor and others become financial giants. Raymond Fisman and Edward Miguel’s new book “Economic Gangsters” explores some of the developing world’s most persistent problems. ...

Nerves of Steel? Stress, Work Performance and Elite Athletes

There is a notable shortage of empirical research directed at measuring the magnitude and direction of stress effects on performance in a controlled environment. One reason for this is the inherent difficulties in identifying and isolating direct performance measures for individuals. Additionally most traditional work environments contain a multitude of exogenous factors impacting individual performance, but controlling for all such factors is generally unfeasible (omitted variable bias). Moreover, instead of asking individuals about their self-reported stress levels we observe workers’ behavior in situations that can be classified as stressful. For this reason we have stepped outside the traditional workplace in an attempt to gain greater controllability of these factors using the sports environment as our experimental space. We empirically investigate the relationship between stress and performance, in an extreme pressure situation (football penalty kicks) in a winner take all sporting environment (FIFA World Cup and UEFA European Cup competitions). Specifically, we examine all the penalty shootouts between 1976 and 2008 covering in total 16 events. The results indicate that extreme stressors can have a positive or negative impact on individuals’ performance. On the other hand, more commonly experienced stressors do not affect professionals’ performances.Performance, Stressors, Sport, Behavioural Economics, Work-related stress

Perceptions of Fairness and Allocation Systems

This paper explores the conditions of acceptability of differing allocation systems under scarcity and evaluates what makes a price system more or less fair. We find that fairness in an allocation arrangement depend on the institutional settings inherent in the situation, such as information, transparency and competition and the perceived institutional quality (e.g., fiscal exchange and institutional trust). Results also indicate that the solution “weak people first” is seen as the fairest approach to an excess demand situation, followed by “first come, first serve”, the price system and an auction system. On the other hand, a random procedure or an allocation through the government is not perceived to be fair. Moreover, economics students seemed to be less sceptical towards the price system than other subjects although we observe that female students are more sceptical than male students.Fairness, Allocation System, Excess Demand, Price System, Institutions

The emergence of emotions and pro-social and religious sentiments during the September 11 disaster

Analysing emotional states under duress or during heightened, life-and-death situations is extremely difficult, especially given the inability of laboratory experiments to adequately replicate the environment and the inherent biases of post event surveys. It is in this area that natural experiments come to the fore by combining the randomization that comes from natural data with an experimentally realistic event. The pager communications from September 11th, made publicly available by Wiki Leaks (Wiki Leaks, 2009), provide exactly the kind of natural experiment emotion researchers have been seeking. We have analysed the pager messages by applying an absolute count methodology and by presenting both positive and negative emotive categories as well as the development of pro-social and religious sentiment. Providing behavioural evidence on how people communicate under extreme circumstances and offers valuable insights into human nature. We demonstrate that positive and pro-social communications are the first to emerge followed by the slower and lower negative communications. Religious sentiment is the last to emerge, as individual attempt to make sense of event.Content Analysis, Positive Emotion, Negative Emotion, Religiosity, Disaster Communications, 9/11

Laboratory determination of the luminous efficiency of meteor constituents

A crossed beam apparatus has been used to measure the emission and ionization cross sections for the prominent spectral features of Na, Ca, Mg, and Fe in collisions with N2 and O2 over the velocity range of 30 to 120 km/s. From the emission and ionization cross sections, the absolute luminous efficiencies in air were determined over the range of meteor velocities. The maximum luminous efficiencies for the brightest features were: greater than 1 percent for the Na D-lines, 0.2 percent for the Ca I(2) singlet, 0.06 percent for the Mg I(2) and Mg I(3) triplets, and 0.4 percent for Fe over the visible spectral range. These luminous efficiencies are valid for free molecular flow conditions for velocities above about 30 km/s and are directly applicable to spectroscopic observations of faint meteors. In contrast to previous work, the luminous efficiency found for stone in the present investigation decreased with velocity above about 50 km/s

A Generalized Unimodality

Generalization of unimodality for random objects taking values in finite dimensional vector spac

A study of the fundamental characteristics of 2175A extinction

The characteristics of interstellar extinction were studied in the region of the 2175 A feature for lines of sight which appear to exhibit unusually weak ultraviolet extinction. The analysis was based upon a parameterization of the observed extinction via fitting specific mathematical functions in order to determine the position and width of the 2175 A feature. The data are currently being analyzed

Loading atom lasers by collectivity-enhanced optical pumping

The effect of collectivity on the loading of an atom laser via optical pumping is discussed. In our model, atoms in a beam are laser-excited and subsequently spontaneously decay into a trapping state. We consider the case of sufficiently high particle density in the beam such that the spontaneous emission is modified by the particle interaction. We show that the collective effects lead to a better population of the trapping state over a wide range of system parameters, and that the second order correlation function of the atoms can be controlled by the applied laser field.Comment: 5 pages, 7 figure