Defining Advertising Goals for Measured Advertising Results, abbr. DAGMAR was an advertising model proposed by Russel H. Colley in 1961.
According to DAGMAR, each purchase prospect goes through 4 steps:
These steps are also known as ACCA advertising formula. ACCA/DAGMAR is a descendant of AIDA advertising formula and considered to be more comprehensive than AIDA. Developed for the measurement of advertising effectiveness, it maps the states of mind that a consumer passes through. Carol Kopp from Investopedia.com, describes the process entailing the DAGMAR model to also require, "an evaluation of the campaign's success against a pre-set benchmark."
Important parts of the DAGMAR model are definitions of target audience, (people whom the advertising message is addressed to) and objectives (goals of the advertising message).