Methodology
"Deviation-based behavioral scoring as a leading indicator of category disruption."
Journal of Consumer Research, Vol. 51, 2024
The Outlier Index — A Weekly Publication
The signal your category is built to miss.
Every Monday, we publish the week's deviation score across 9.2 million U.S. consumers, annotated with the behavioral shifts your competitors' models are designed to ignore.
Get Your Category ReadFrom the editors
A deviation score is not a sentiment number. It is the distance a cohort has traveled from the behavior your category assumes is normal.
The Outlier Index scores 41 behavioral signals — repeat purchase entropy, channel abandonment, search-term novelty, social-mention velocity, price elasticity drift, and 36 others — across our verified panel of 9.2 million U.S. consumers. The number you read here is a normalized deviation, where 100 represents the historical baseline behavior of a category and anything above 62 indicates a statistically significant cohort in motion.
We publish weekly because category strategy runs on quarters while consumer behavior runs on weekends. A monthly read is already three releases late. The Index is the closest thing to a real-time seismograph for the consumer economy, and it is the artifact we hand to every strategy leader who asks us what changed since the last board meeting.
— The Abnormis Research Desk, Brooklyn
This week's readings
The issue, in four numbers.
Composite score, momentum, signal depth, and forward horizon — published every Monday at 06:00 ET.
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Composite Outlier Index
73.4
+2.1 vs. prior week
Highest reading in 11 weeks. Above the 62-significance floor for the eighth consecutive Monday.
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Signals detected
1,284
+186 vs. prior week
Of 41 tracked signals, 9 crossed the two-standard-deviation threshold this week.
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Category movers
7/22
−1 vs. prior week
Seven of twenty-two tracked categories are deviating materially from baseline.
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Prediction horizon
11mo
Median lead vs. mainstream
The Index has historically flagged category-disrupting behaviors an average of 11 months before conventional trackers.
90-day trajectory
Eleven weeks above the significance floor.
The Index has not closed below 62 since early August. Three events in the last quarter deserve attention from any strategy team still planning against last year's baseline.
- Aug 12 64.0 First cross of the significance floor; beverage-alcohol cohort in motion.
- Sep 09 68.7 Premium skincare cohort accelerates on search-term novelty signals.
- Oct 07 73.4 Current issue; cross-category acceleration in QSR value-tier switching.
Category breakdown
Where the deviation is concentrated.
A one-line read on each of the four categories currently registering the largest gap between baseline assumption and observed behavior.
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01
Quick-Service Restaurants
+4.8Value-tier switching accelerating across 18–34 cohort; loyalty-program redemption dropping 11% week-over-week.
Largest mover -
02
Premium Skincare
+3.1Search-term novelty up 27%; indie-brand discovery replacing dermatologist-channel influence in the under-40 cohort.
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03
Beverage Alcohol
+2.4Low- and no-ABV cohort now represents 31% of category consideration; mainstream trackers still model at 18%.
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04
Mass Beauty
−1.2Channel abandonment at mass retail up 6%; cohort migrating to DTC and drug-tier alternatives not yet in panel baselines.
Want the full 22-category breakdown with category-specific signal annotations?
Get Your Category ReadColophon
Methodology, audit, and citation.
The Outlier Index is published by Abnormis, Inc. It draws on a verified panel of 9.2 million U.S. consumers scored weekly across 41 behavioral signals. Methodology audited quarterly under the Esomar 28 standard.
Citation
"The Outlier Index's weekly cadence gives strategy teams a near-real-time read on cohort behavior that monthly trackers structurally cannot."
Harvard Business Review, May 2024
Audit
Panels verified against the Esomar 28 standard on a quarterly cycle; methodology reproducibility review on file.
Independent audit, Q3 2024
Standards
ISO 27001 certified; SOC 2 Type II compliant since 2021. All client deliverables handled under enterprise-grade data controls.
Abnormis compliance, 2024