We propose a methodology to study the effects of physical ad propertie
s on consumers' Visual attention to advertising that accounts for hete
rogeneity in these effects across consumers. In an illustrative experi
ment, we monitor consumers' eye movements during naturalistic exposure
to a consumer magazine, in which experimentally designed ads are inse
rted. A latent class regression model accounting for heterogeneity acr
oss consumers through unobserved segments is used to analyze the eye m
ovement data in detail. Three consumer segments are identified that ex
hibit distinct patterns of visual attention as well as different profi
les of product involvement, brand attitude, and advertising recall. Im
plications for visual attention theory and for advertising research ar
e discussed.