This paper studies the impacts of product variety along two dimensions: product-line variety and pack-size variety. Previous research has often found that increased product variety is associated with increased sales. Interestingly, we find that this is not always the case, once the negative...

The impact of airline alliances on airfares on nonstop hub-to-hub routes is investigated. Analytical results suggest that the net effect on airfares is uncertain. Empirical evidence shows that the impact of two of three alliances (Star and SkyTeam) on prices on transatlantic hub-to-hub routes is...

Managing product variety has long been a concern for firms from many different industries, with less product variety typically associated with higher operational performance. However, most contemporary research on product variety has looked at its impacts on the operations and sales performance...