In study 1, we demonstrate that imagining a food odor
while looking at an ad with a picture of food increases
salivation. In study 2, we look at the effect of imagining a
food odor on salivation—with versus without access to a
picture of the advertised food product (and in comparison
to actual scent exposure). In study 3, we manipulate scent
and picture at all levels (none, imagined, actual) to explore
in more detail the interplay between olfactory and visual
imagery, using actual food consumption as the dependent
measure. In study 4, we provide all subjects with the advertised
food product’s scent and explore the effect of picture
exposure on desire to eat as a function of individual
visual imagery ability.