Research Seminars (Archive)
Train Commuters' Scheduling Preferences: Evidence From a Large-Scale Reward ExperimentLecturer: Stefanie Peer Affiliation: Vienna University of Economics and Business ESF, Lipová 41a, Brno, Room S309 1:00 PM • 10/31/2013
Abstract: We investigate the trip scheduling behavior of Dutch train commuters, using data collected during a large-scale reward experiment with more than 1000 participants. Railway subscription owners were invited to join an experiment where they could earn (distance-based) monetary rewards if they traveled outside the (morning and evening) peak hours. A dedicated smartphone app was used to observe the trip timing and routing behavior of the participants. Compared to the pre-measurement, the share of peak trips decreased by ca. 20% during the reward period, and by 9% during the post-measurement. We estimate departure time choice models, drawing from multiple data sources to compute the attribute values for all choice alternatives. We are able to derive plausible revealed preference (RP) values for the participants' willingness-to-pay for reducing travel time, schedule delays, the number of transfers and crowdedness, and for increasing reliability.
Corruption and Manipulation of Public Procurement: Evidence from the Introduction of Discretionary ThresholdsLecturer: Filip Pertold Affiliation: CERGE-EI ESF, Lipová 41a, Brno, Room S309 1:00 PM • 10/3/2013
Abstract: We present a methodology for detecting manipulation of public procurement and evidence showing how policies that create discontinuous incentives to avoid transparent competition lead to manipulation and active waste by procurement officials. Our methodology exploits a natural experiment in which new discretionary thresholds in the anticipated value of procurements were established. Manipulations reveal through bunching of procurements below the new thresholds and affect 11% of relevant contracts. Manipulations lead to increases in the chance of allocating contracts to anonymously owned firms often related to corrupt behavior, increases in the final prices of procurements and preferential prices for anonymous contractors.