Links to the science

behind effectiveness

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A 13-part breakdown of the evidence, thinkers, and data that power this approach.

1. Why Fame, Fluency & Feeling?

System1Group boiled it down to three proven factors. Why? Because these three predict long-term business success.

This claim is based on empirical analysis of over 50,000 ads tested globally in System1’s database, where the heuristics of Fame, Fluency, and Feeling were shown to predict long-term market share outcomes with a high degree of accuracy — specifically, a correlation coefficient of +0.9.

References:


2. What the Brain Really Responds To

  1. Fame = come to mind first

  2. https://marketingscience.info/mental-availability-is-not-awareness-brand-salience-is-not-awareness/

  3. Fluency = be recognisable

  4. Feeling = make people like you

References:

  • Binet & Field (2013), p.63: “Fame campaigns are most effective.”

  • Romaniuk & Sharp (2016): “High mental availability = faster growth.”

  • Romaniuk (2018): “DBAs reduce misattribution.”

  • Heath (2007): “Emotion builds lasting memory.”


3. Creativity = ROI Superpower

Creative marketing doesn’t just win awards. It wins in the real world.

Data Highlights:

  • Hurman (2016): Creative campaigns = 11× more efficient

  • System1 + LinkedIn (2023): Creative = 5× the ROI

  • Heath (2007): Emotion drives memory and behaviour

Sources:

  • The Case for CreativityHurman

  • The Cost of Dull – System1

  • IPA / Binet & Field – multiple campaigns

4. Effectiveness is Declining

We’re doing marketing more efficiently — but also more ineffectively.

Key Stats:

  • Effectiveness halved since 2008 (Binet & Field, 2019)

  • Short-termism is the culprit (LinkedIn B2B, 2021)

  • Emotionless ads = no growth (System1, 2024)


5. 12× Creative Effect

If you invest in high-quality creative, the upside is enormous.

Insights:

Sources:


6. We Stand on the Shoulders of Giants

We didn’t invent this. We translated it.

Contributors:

  • System1: Wood, Evans, Tindall

  • IPA: Field, Binet

  • Ehrenberg-Bass: Sharp, Romaniuk

  • Others: Kahneman, Ritson, Kantar, WARC

7. Brains Don’t Choose “Best”

System 1 chooses fast, emotional, familiar options.
Source: Kahneman (2011), Thinking, Fast and Slow
·       Daniel Kahneman (2011) showed that System 1 thinking (fast, emotional, intuitive) governs 90% of daily decisions, including brand choices.

·       Effective marketing works with this, using familiarity, fluency, and emotion — not logic or detail — to drive decisions.

“People don’t choose the best brand. They choose the most mentally available one that feels good and familiar.”
Kahneman, 2011


8. How Marketing Works with Brains

Good marketing fits how people actually decide.

Evidence:


9. The +0.9 Correlation

Tindall’s System1 research shows it’s not opinion — it’s proven.
Stat: +0.9 correlation between Fame, Fluency, Feeling and share growth
Source: Tindall (2024)

10. The 95:5 Rule

Only 5% of buyers are in-market at any time.

Implication:
You must reach the 95% to grow. Memory = sales later.
Source: Dawes (Ehrenberg-Bass), LinkedIn B2B Institute


11. How Fame Works

Fluent devices + fame work = memory building.

Examples: Meerkats, Kevin the Carrot, Honey Monster
Supporting Work:


12. Fluency in Action

Be recognisable and consistent — or you’ll be misattributed.

Stats:

  • 84% of ads are wrongly attributed (Romaniuk, 2018)

  • “Brands without strong distinctive assets waste up to 84% of their advertising. Branding must be both consistent and unique to work.”
    — Romaniuk, Building Distinctive Brand Assets, 2018

  • Fluent devices = 27% more share growth (Wood, 2021)

Heuristic:
“Easy = right” – Reber et al. (2004); Kahneman (2011)

“Processing fluency enhances liking, trust and choice. If it looks and sounds familiar, brains believe it’s right.”
— Kahneman, Thinking, Fast and Slow (2011); Reber et al., 2004


13. Feeling Sells

People don’t choose rationally. They choose emotionally.

Evidence:

  • Kahneman, D. (2011). Thinking, Fast and Slow. Farrar, Straus and Giroux.

  • Binet, L. & Field, P. (2013). The Long and the Short of It. IPA.

  • Hurman, J. (2016). The Case for Creativity. Previously Unavailable.

  • Romaniuk, J. (2018). Building Distinctive Brand Assets. Oxford University Press.

  • Sharp, B. (2010). How Brands Grow. Oxford University Press.

  • Wood, O. (2021). Look Out. System1 Group.

  • Tindall, A. (2024). Effectiveness in an Age of Efficiency. System1 Group.

  • Slovic, P. et al. (2002). The Affect Heuristic. Cambridge University Press.

  • LinkedIn B2B Institute (2021). The 95:5 Rule.

  • WARC (2020). Creative Effectiveness Ladder.