Associate professor, Department of Business and Management Science, NHH Norwegian School of Economics
Research associate, Institute for Fiscal Studies
(Until July 2020, associate professor, Department of Economics, Seoul National University)
DPhil (PhD) and MPhil (master thesis here) in Economics, University of Oxford, Exeter College
Contact: oyvind.thomassen at gmail.com , oyvind.thomassen at nhh.no
Working papers
Local charger availability and electric vehicle adoption: evidence from Norway (supporting information), with Costanza Cincotta (revise and resubmit at Journal of Environmental Economics and Management)
Identification of differentiated products demand with micro moments: consumer panel data (revised 11 October 2025), with Linqi Zhang (revise and resubmit at Economics Letters, first revision submitted)
The rise of discounters and its impact on concentration, market power and welfare, with Martin O'Connell and Howard Smith (revise and resubmit at American Economic Review)
Work in progress
A model of beer retail pricing, with Martin O'Connell and Howard Smith
Competition in the Norwegian newspaper market, with Armando Garcia Pires and Frode Skjeret
Self-evaluation bias, with Olivia Kim
Equilibrium pricing relationships between retailers and manufacturers: an empirical model, with Walter Beckert, Segye Shin, and Howard Smith
Market power and electric vehicles in Norway, with Costanza Cincotta and Qiancong Huang
Electric vehicles demand, taxes, and charger availability, with Costanza Cincotta
Published and accepted papers
A two sample size estimator for large data sets, Econometrics Journal, 28(3) 406–422, September 2025. https://doi.org/10.1093/ectj/utaf002
M. O'Connell, H. Smith, and Ø. Thomassen
Evaluating Norway's electric vehicle incentives, Energy Economics, 146, May 2025. https://doi.org/10.1016/j.eneco.2025.108490
C. Cincotta and Ø. Thomassen
Electric vehicle ownership and political preferences in Norway. Transportation Research Part D, 139, February 2025. https://doi.org/10.1016/j.trd.2024.104518
C. Cincotta and Ø. Thomassen
An empirical model of automobile engine variant pricing. International Journal of the Economics of Business, 24(3) 275–293, September 2017.
Ø. Thomassen
IJEB Best Paper Award 2017.
Multi-category competition and market power: a model of supermarket pricing. American Economic Review, 107(8) 2308–2351, August 2017.
Ø. Thomassen, H. Smith, S. Seiler, and P. Schiraldi
pdf, appendix, code. Media: VoxEU, Stanford Business Insights, Dagens Næringsliv. Previously circulated as Smith and Thomassen (2015). Authorship issue.
The effects of tax exemption on the sale of electric vehicles in Norway. Korean Economic Journal, 56(1) 3–20, July 2017.
Ø. Thomassen
Asymmetric price increase in critical loss analysis: a reply to Langenfeld and Li. Journal of Competition Law and Economics, 10(3) 765–768, September 2014.
Ø. Daljord, L. Sørgard and Ø. Thomassen
A generalised nested logit model of the demand for automobile variants. Korean Economic Journal, 53(1) 21–50, July 2014.
Ø. Thomassen
A pure characteristics demand model for automobile variants. Seoul Journal of Economics, 27(2) 187–222, June 2014.
Ø. Thomassen
Multi-category demand and supermarket pricing. International Journal of Industrial Organization, 30(3) 309–314, May 2012.
H. Smith and Ø. Thomassen
The SSNIP test and market definition with the aggregate diversion ratio. Journal of Competition Law and Economics, 4(2) 263–270, June 2008.
Ø. Daljord, L. Sørgard and Ø. Thomassen
Old working paper
Market definition with shock analysis, with Øystein Daljord and Lars Sørgard