Most process models of how advertising works are linear and posit that rece
ivers of advertising messages move through several hierarchical stages trad
itionally described as Attention, Interest, Desire, and Action (AIDA); Awar
eness, Comprehension, Conviction, and Action (DAGMAR); or Knowledge, Liking
, Preference, Conviction, and Purchase (Learn-Feel-Do).
Attempts have been made to construct process models that are nonhierarchica
l in structure (Preston, 1982; Moriarty, 1983), yet no model has been propo
sed that accounts for the nonlinear, dynamic nature of the advertising proc
ess. Existing models assume a constant level and frequency of message deliv
ery-rarely present in the advertising environment-and a linear progression
from awareness toward an end-game of purchase or adoption, which is seldom
an orderly one.
The model proposed here is in the shape of double helix. Its shape was sugg
ested by the famous double helix structure of DNA proposed by Francis Crick
and James Watson in 1953. The model posits that advertising is nonlinear,
multidimensional, and achieves its effects over time, within limited parame
ters of medium and message. The model can be applied to a variety of advert
ising types and genres-consumer, business-to-business, corporate, political
. It can also be applied to other models, such as the still-developing mode
ls for integrated marketing communications and interactive advertising.