Masking identification of discrete choice models under simulation methods

We present examples based on actual and synthetic datasets to illustrate how simulation methods can mask identification problems in the estimation of discrete choice models such as mixed logit. Simulation methods approximate an integral (without a closed form) by taking draws from the underlying distribution of the random variable of integration. Our examples reveal how a low number of draws can generate estimates that appear identified, but in fact, are either not theoretically identified by the model or not empirically identified by the data. For the particular case of maximum simulated likelihood estimation, we investigate the underlying source of the problem by focusing on the shape of the simulated log-likelihood function under different conditions.     

Leading-by-example and signaling in voluntary contribution games: an experimental study

We report experimental results on the effect of leadership in a voluntary contribution game. Consistent with recent theories we find that leading-by-example increases contributions and earnings in an environment where a leader has private information about the returns from contributing (Hermalin in Am Econ Rev 88:1188–1206, 1998; Vesterlund in J Public Econ 87:627–657, 2003). In contrast the ability to lead-by-example has no effect on total contributions and earnings when such returns are commonly known. In our environment the success of leadership therefore appears to be driven by signaling rather than by nonpecuniary factors such as reciprocity. This paper was started while the authors were visiting the Harvard Business School during the fall of 2000. We are grateful for their hospitality and financial support. Vesterlund acknowledges support from the National Science Foundation and Potters from the Royal Netherlands’ Academy of Arts and Sciences. We thank Henrik Orzen for assistance in conducting the experiment. We also thank David Cooper and an anonymous referee who helped us improve the paper. Finally we thank Chris Anderson, Jim Andreoni, John Duffy, Simon Gaechter, Ernan Haruvy, Muriel Niederle, Jack Ochs, Elke Renner, Al Roth, participants at ESA-meetings (Barcelona, 2001), the Leadership and Social Interactions Workshop (Lyon, 2003), SITE (Stanford, 2004) and seminar participants at Alabama, CMU, Duke, Keele, Maryland, Nottingham, NYU, Pittsburgh, OSU, and York for valuable comments.     

Reliability of Assessment of Reading Ability in Three Countries

Over the last few decades, there have been a number ofnational and international programmes to assessperformance in key subjects. For example theInternational Association for Evaluation ofEducational Attainment (IEA), International Assessmentof Educational Progress (IAEP), and the ThirdInternational Mathematics and Science Survey (TIMSS)programs have aimed to compare performance betweenparticipating countries.Such exercises have different requirements from thosetests, such as public examinations, which aim toassess the attainment of individuals. National andinternational assessments aim to cover a very widerange of materials, and often use the technique ofmultiple matrix sampling to do so.The investigation is based on generalizability-typeanalyses of three national data sets at two ages, andlooks not only at the variance components arising fromsampling of schools, and of pupils within them, butalso at the variation between different assessmentinstruments, and between items within assessmentinstruments. If interpreted with care, such resultscan be of value in the design of future studies. Thispaper concentrates largely on the precision ofestimates of overall means, but analyses of the typedescribed could also be used to compare theperformance of subpopulations.     

Advertising and recruitment: Marketing to minorities

Growing diversity, increasing multinationalism, and a need to better understand minority consumers make recruiting minority professionals to the workplace exceedingly important. This study examines the influences of a frequently used tool in organizational recruitment, the recruitment advertisement. Specifically, this research examines the influence of the racial composition of employees portrayed in these advertisements on a diverse sample of job‐seeker reactions. These reactions include perceptions of organizational attractiveness, perceived compatibility to the organization, and evaluations of organizational image. In addition, it was expected that the race of the perceiver, the job seeker, would moderate these relationships. Mixed support for the hypotheses was found. Implications for advertising, marketing, and recruitment research given emerging domestic diversity are offered. © 2000 John Wiley & Sons, Inc.     

Public and private funding in new urban public transport

Pressures to reduce urban traffic pollution in the UK have not yet resulted in new policies to provide attractive alternatives to the private car. With growing pressure on public sector investment funds, this article considers ways in which the private sector could work in partnership with the public sector to create new light rail systems.     

Paradise postponed: dilemmas facing shop stewards in the new South Africa—accommodation orresistance?

The growth of the shop stewards movement in South Africa prior to majority rule represented a challenge to the institutionalised managerial prerogative and cemented the position of black trade unions in the workplace, posing a threat to both Apartheid’s cheap labour system and also to the political control of the Apartheid regime. With the advent of majority rule in 1994, shop stewards are now expected to comply with, and co-operate in, the implementation of workplace changes which they would have traditionally opposed. This, plus the move towards Japanese-style ‘lean’ work practices, is creating farreaching challenges for the ‘New’ South African shop steward movement.     

Magnitude effect in intertemporal allocation tasks

Experimental Economics - Intertemporal choices are affected by both discount rate and utility curvature. We investigate how the two aspects of time preference are affected by the size of the total...