In a new study from the August issue of the Journal of Consumer Research, researchers from Northwestern University
demonstrate how advertisements can be manipulated to cause overemphasis of a particular feature and increase the
likelihood that a certain product is chosen. Their finding runs contrary to economic models, which assume that
choices are based on stable preferences and should not be influenced by the inclusion of inferior options.
"By showing the impact of perceptual focus on consumer preferences, this research demonstrates that in addition to
the many overt ways companies can draw attention to products, the visual arrangement of alternatives can also have a
significant influence on their relative choice shares," explain Ryan Hamilton, Jiewen Hong, and Alexander Chernev.
In a series of fascinating experiments, the authors show how grouping together options with similar
characteristics
can emphasize dissimilar options and help them pop-out. For example, consider a comparison of two sofas, A and B.
Sofa A has softer cushions; Sofa B is more durable. In a head-to-head comparison, sofa A is preferred by less than
half of the survey participants -- 42.3 percent.
However, if sofas A and B are grouped with three other sofas, all of which have a low rating for cushion softness,
then preference for sofa A jumps to 77.4 percent. One of these things is not like the others, and that apparently
makes it more desirable -- a phenomenon the authors term "perceptual focus effect."
"The research presented in this article has practical implications for manufacturers and retailers in determining
the
size and composition of their product assortments," conclude the authors. "In particular, when designing product
displays, in both print and electronic media, companies need to be aware of the potential impact of the visual
characteristics of choice alternatives on consumer preferences."
The researchers also found that how consumers process information can influence how susceptible they are to
perceptual focus effect. Those who rely on intuition are more likely to choose a perpetually focal option. In
addition, having participants perform an analytical test before making a product choice drained logical reasoning
resources and increased the likelihood that the person would choose the perpetually focal option.
Reference: Ryan Hamilton, Jiewen Hong, and Alexander Chernev. "Perceptual Focus Effects in Choice" Journal of
Consumer Research: August 2007.
Note: This story has been adapted from a news release issued by University of Chicago.
