Process tracing data help researchers understand how yellow pages adve
rtisement characteristics influence consumer information processing be
havior. In a laboratory experiment eye movement data were collected wh
ile consumers chose businesses from telephone directories. Consumers s
can, listings in alphabetic order. Their scan is not exhaustive. As a
result, some ads are never seen. Consumers noticed more than 93% of th
e quarter-page display ads but only 26% of the plain listings. They pe
rceived color ads before ads without color, noticed more color ads tha
n noncolor ads, and viewed color ads 21% longer than equivalent ads wi
thout color. Also, they viewed 42% more bold listings than plain listi
ngs. Consumers spent 54% more time viewing ads for businesses they end
ed up choosing, which demonstrates the importance of attention for sub
sequent choice behavior.