Professor of Microeconomics
Associate Fellow of the Tinbergen Institute 
Research Interest
Industrial organization, behaviorial economics, social interactions, field experiments
Contact details
University of Groningen
Faculty of Economics & Business
P. O. Box 800
9700 AV Groningen
The Netherlands
T: + 31 (0)50 363 7663 (direct)
T: + 31 (0)50 363 7018 (secretary)

CV [pdf]

Selected Publications

Do auctions and forced divestitures increase competition? Evidence for retail gasoline markets, 2014, Journal of Industrial Economics,62(3), 467-502, with Marco A. Haan and Pim Heijnen

Bidding to Give in the Field (2013), Journal of Public Economics, 104, 72-85, with Sander Onderstal and Arthur Schram.

Anonymity in Giving in a Natural Context – A Field Experiment in 30 Churches,” 2005,  Journal of Public Economics, 89(11-12), December, 2301-2323


Promises undone: How committed pledges impact donations to charity, 2018, Tinbergen Institute Discussion Paper no. 2018-044/VII, with Toke R. Fosgaard
[New version: July 24]

Randomization in Field Experiments, forthcoming in: Handbook of Research Methods and Applications in Experimental Economics, Arthur Schram and Aljaž Ule (Eds.), Edward Elgar Publishing Ltd, with Noemi Peter

Price competition on graphs, 2018, Journal of Economic Behavior & Organization, with Pim Heijnen

Recent Working Papers