Improved consumer information about (symmetric) products can lead to better matching but also higher prices, so consumer surplus can go up or down, while profits rise. With enough firm asymmetry though, the stronger firm's price falls with more information, so both effects benefit consumers. This is when comparative advertising is used, against a large firm by a small one. Comparative advertising, as it imparts more information, therefore helps consumers. While it also improves profitability of the small firm, overall welfare goes down because of the large loss to the attacked firm.
Download Info
To download:
If you experience problems downloading a file, check if you have the
proper application to
view it first. Information about this may be contained
in the File-Format links below. In case of further problems read
the IDEAS help
page. Note that these files are not on the IDEAS
site. Please be patient as the files may be large.
Publisher Info
Paper provided by THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise in its series THEMA Working Papers with number
2008-29.