This paper shows that differentiating driving costs by time of day and vehicle type help improve urban air quality, lower driving, and induce adoption of electric vehicles. By taking advantage of a congestion charge that imposed spatial and temporal variation in the cost of driving a...

Is sickness absence related to attitudes? Several studies point to attitudes as an important factor for sickness absence. We study the relation between sickness absence and attitudes towards possible reasons for sick leave, towards cheating and towards work, by linking a survey among Norwegian...

The correlation in economic status among siblings is a useful "omnibus measure" of the overall impact of family and community factors on adult economic status. In this study we compare brother correlations in long-run (permanent) earnings between the United States, on one hand, and the Nordic...