Friberg, Richard; Grönqvist, Erik - In: American Economic Journal: Applied Economics 4 (2012) 1, pp. 193-211
We examine the demand for wines in Sweden using five years of weekly data on sales, advertising, and expert reviews. The effect of a favorable review peaks in the week after publication with an increase in demand of 6 percent, and the effect remains significant for more than 20 weeks. We find...