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Evidence · Advertising

How advertising works: mechanisms, elasticities and returns

Advertising works, but its measured effect on sales is small and conditional. Meta-analyses agree that the sales elasticity of advertising is small and positive yet disagree on how small, and for mature brands advertising is one of the weakest levers of the marketing mix. No single sequence of mental steps explains how ads work: involvement decides whether arguments or peripheral cues matter, and much brand advertising appears to work by keeping the brand in memory rather than by persuading.

Definition

How advertising works covers two linked questions: what an ad does in the mind (attention, memory, feelings and attitudes) and how much it changes sales. The sales effect is usually summarised as an advertising elasticity, the percentage change in sales for a one percent change in advertising. Measuring the causal effect of one specific campaign is a separate problem, covered under advertising incrementality.

What the research finds

There is no universal hierarchy of effects

A synthesis of more than 250 studies finds no support for one fixed sequence from awareness to attitude to purchase; which intermediate effects matter depends on the product and context. Classic experiments show why: under high involvement the quality of the arguments drives attitudes, while under low involvement peripheral cues such as a celebrity endorser carry more weight.[1][2]

Much brand advertising works as publicity, not persuasion

Drawing on repeat-buying patterns, one influential account holds that most brand advertising keeps a brand salient among largely habitual buyers rather than changing their minds before purchase. The underlying memory effect is well documented: repeated exposure on its own is enough to make people like a stimulus more. The publicity account itself is argued from buying patterns rather than tested directly.[3][4]

Sales elasticities are small and positive, but their level is disputed

An early meta-analysis of 128 econometric models put the short-term advertising elasticity near 0.22. A later one, covering 751 short-term and 402 long-term brand elasticities, found averages of about 0.12 and 0.24, declining over time and higher for new products. A 2025 meta-analysis of 538 elasticities with stronger corrections for misspecification, aggregation and publication bias puts them at 0.0008 short-term and 0.03 long-term, close to results from randomised experiments, and finds internet advertising has the highest elasticity. The direction agrees across studies; the level does not, so both figures should be cited.[5][6][7]

For mature brands, advertising is a weak lever

Across 70 mature brands in 25 French packaged-goods categories over five years, the total sales elasticity was 1.37 for the product line and .74 for distribution, but only .13 for advertising and .04 for discounting. Price elasticities, by contrast, average about -2.62 across 1,851 estimates, an order of magnitude larger than advertising elasticities.[8][9]

Mind-set metrics add real information

For more than 60 brands in four consumer-goods categories, adding advertising awareness, consideration and liking to a sales-response model accounted for almost one-third of explained sales variance. These measures move before sales do, which gives managers an early warning, and competitors' mind-set metrics matter about as much as the brand's own.[10]

Say which return on investment you mean

Total, incremental and marginal marketing ROI answer different questions and are often confused. Reports should state the spending scope, the valuation method and the time window, and maximising ROI is not the same as maximising short- or long-run profit. This framework comes from a practitioner-oriented journal.[11]

Known generalizations, known gaps

A special issue on advertising generalizations assembled 23 empirical laws and surveyed experts on which are most important and most certain. Many of these laws lack clear knowledge of the conditions under which they hold, and the gaps are largest for fragmented, interactive digital media.[12]

How strong is the evidence?

The small, positive direction of advertising's sales effect is well established across meta-analyses of hundreds of estimates. The level is not: recent meta-analyses using different bias corrections differ several-fold, and older econometric estimates are probably inflated by selection and specification. Most elasticity evidence comes from established packaged-goods brands; effects are larger for new products and possibly for internet advertising. The publicity account of advertising is argued from buying patterns and is associated mainly with one research group, and the ROI framework comes from a practitioner journal. Creative quality and media weight are treated as separate levers on their own pages.

References

  1. Demetrios Vakratsas, Tim Ambler (1999). How Advertising Works: What Do We Really Know?. Journal of Marketing.
  2. Richard E. Petty, John T. Cacioppo, David Schumann (1983). Central and Peripheral Routes to Advertising Effectiveness: The Moderating Role of Involvement. Journal of Consumer Research.
  3. Andrew Ehrenberg, Neil Barnard, Rachel Kennedy, Helen Bloom (2002). Brand Advertising As Creative Publicity. Journal of Advertising Research.
  4. Robert B. Zajonc (1968). Attitudinal Effects of Mere Exposure. Journal of Personality and Social Psychology (Monograph Supplement).
  5. Gerald Assmus, John U. Farley, Donald R. Lehmann (1984). How Advertising Affects Sales: Meta-Analysis of Econometric Results. Journal of Marketing Research.
  6. Raj Sethuraman, Gerard J. Tellis, Richard A. Briesch (2011). How Well Does Advertising Work? Generalizations from Meta-Analysis of Brand Advertising Elasticities. Journal of Marketing Research.
  7. Joseph Korkames, T. D. Stanley, Stefan Stremersch (2025). Meta-analysis of advertising effectiveness: New insights from improved bias corrections. International Journal of Research in Marketing.
  8. M. Berk Ataman, Harald J. van Heerde, Carl F. Mela (2010). The Long-Term Effect of Marketing Strategy on Brand Sales. Journal of Marketing Research.
  9. Tammo H. A. Bijmolt, Harald J. van Heerde, Rik G. M. Pieters (2005). New Empirical Generalizations on the Determinants of Price Elasticity. Journal of Marketing Research.
  10. Shuba Srinivasan, Marc Vanhuele, Koen Pauwels (2010). Mind-Set Metrics in Market Response Models: An Integrative Approach. Journal of Marketing Research.
  11. Paul W. Farris, Dominique M. Hanssens, James D. Lenskold, David J. Reibstein (2015). Marketing return on investment: Seeking clarity for concept and measurement. Applied Marketing Analytics.
  12. Yoram Wind, Byron Sharp (2009). Advertising Empirical Generalizations: Implications for Research and Action. Journal of Advertising Research.

Bibliographic details only. Follow the DOI to read each study at its publisher.

Related topics

A synthesis of 12 studies, written by ScholarSignal. Last reviewed 2026-09-26.

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