We consider long-term impacts of establishing school psychology offices in Norway, which introduced 'maturity testing' to advice parents and school boards on school starting age. In the early reform period, children born close to the normative age cut-off who reached school-starting age after...

Policy makers use reference pricing to curb pharmaceutical expenditures by reducing coverage of expensive branded drugs. In a theoretical analysis we show that the net effect of reference pricing is generally ambiguous when accounting for entry by generic producers. Reference pricing shifts...

We analyze the change in the urban wage premium over the last 60 years. We focus on differences by gender and skill levels, with an emphasis on changes throughout the earnings distribution. We assess the importance of both changing selection into urban areas, as well as the importance of shifts...

This paper develops a machine-learning method that allows researchers to estimate heterogeneous treatment effects with panel data in a setting with many covariates. Our method, which we name the dynamic causal forest (DCF) method, extends the causal-forest method of Wager and Athey (2018) by...

This paper studies the consequences of the buildup of a new economic sector-the Norwegian petroleum industry-on investment in human capital. We assess both short-term and long-term effects for a broad set of educational margins, by comparing individuals in regions exposed to the new sector with...

This study examines how the impact of Tradable Green Certificates (TGC) on profitability and investment behavior varies depending on the vertical integration status of regulated firms. Our theoretical model predicts that vertical integration does not lead to higher profits when internal pricing...

For a long time, Norway has had resource rent taxes on oil- and natural gas extraction as well as on hydropower generation. Recently, resource rent taxes have also been levied on aquaculture, and wind power generation. This paper, gives a short overview of the rent theory, the basis for rent...