Prospects need 7 touches before they buy (the Rule of 7)
Unsourced Confidence: medium
No primary data found; the trail ends in a roundup, a disowned quote or a circular citation.
- Commonly cited as
- "1930s Hollywood studios found 7 exposures are needed"
- True origin
- Jeffrey Lant (book, 1990) — rule of thumb, not a study — No study found for the Hollywood story
- Type
- Stat check: A widely repeated statistic traced back to its origin.
- Year
- 1990
- Data as of
- 1990
- Last checked
- What the source says
We searched for the Hollywood 'seven posters' research and couldn't find a single source that names the studio, the year or the study.
- Method & sample
- Measured advertising research points elsewhere: Krugman (1972) argued 3 exposures; Naples (1979) found 2 exposures within a purchase cycle effective (as summarized by the source). Lant’s book itself was not accessible online, so confidence stays medium.
- Drift between quote and source
- Lant's rule was about prospects noticing a message within 18 months, not about buying
- Interest
- n/a
Safe rephrasing
The 'Rule of 7' is a rule of thumb; advertising research on effective frequency has proposed 2–3 exposures, and results vary by brand and channel.
Sources we opened
Machine-readable: /api/claims/rule-of-7-marketing.json · Last checked 2026-10-16