We analyze consumers’ reactions to negative information on product quality using daily scanner data at item level from a well-known supermarket chain. We focus on a fraud that in 2008 has involved a number of Italian leading firms in the cheese sector. Exploiting the fact that only some brands...

A wide variety of retailers (supermarkets, home electronics, Internet shops, etc.) provide scanner data containing information at the level of the barcode, e.g. the Global Trade Item Number (GTIN). As scanner data provide complete transaction information, we may use the expenditure shares of...