← Concept index

ThinkerMETA

Andrew Ehrenberg

Ehrenberg · Ehrenberg-Bass

Andrew Ehrenberg (1926-2010) laid the statistical foundation under marketing's empirical school. His life's work was finding law-like patterns in buying behaviour that replicate across categories, countries and decades, with the NBD-Dirichlet model as its crown: one model predicting purchase frequencies, brand choice and loyalty figures from market share. Double jeopardy is his best-known discovery. Ehrenberg's methodological legacy matters as much as his results: first establish patterns that replicate, only then theorise. The institute named after him and Robert Bass continued that programme and, through Byron Sharp, carried it into marketing practice.

Key work Repeat Buying (1988)

Covered in

A1

A1-01 What Makes a Marketing Law a Lawstill locked

A1-02 Double Jeopardy — The First Lawstill locked

A1-03 Retention, Acquisition and the Leaky Bucketstill locked

A1-04 Mental Availability — The Mechanism Behind the Patternsstill locked

A1-05 Physical Availability — Presence, Prominence, Portfoliostill locked

A1-07 Category Entry Points — Mapping the Buying Situationsstill locked

A1-08 Duplication of Purchase and the Natural Monopoly Lawstill locked

A1-09 Price Promotions and Loyalty Programmes — What the Evidence Saysstill locked

A1-10 The Case Against Sharp — Limits, Critics and Boundary Conditionsstill locked

A1-11 The Ehrenberg-Bass Playbook, Appliedstill locked

A1-12 Penetration AND Loyalty — The Synthesisstill locked

A2

A2-02 The Long and the Short of It: The Evidencestill locked

A2-03 Fame, Emotion and Activationstill locked

A2-06 Creative Commitment and the Effectiveness Ladderstill locked

A2-08 Distinctive Assets in the Creative Workstill locked

A2-09 Wear-Out, Wear-In and the Power of Consistencystill locked

A2-10 The Creative Brief as Synthesis (Capstone)still locked

Show all 111 mentions

A3

A3-01 What Media Evidence Can and Cannot Tell Youstill locked

A3-02 Reach versus Targeting: What the Evidence Saysstill locked

A3-04 Frequency and Recency: How Often Is Enough?still locked

A3-12 Capstone: The Media Plan on Trialstill locked

A4

A4-01 The Sharpest Lever — and What We Actually Know About Itstill locked

A4-06 Promotions and Their Long-Term Damage: The Ehrenberg-Bass Evidencestill locked

A4-08 Price Wars: How They Start and How to Stay Outstill locked

A4-10 The Pricing Audit — Capstonestill locked

A5

A5-01 B2B Is Not a Different Universe — Where It Is and Isn'tstill locked

A5-02 The Brand Laws in B2B — the Dawes Evidencestill locked

A5-06 Category Entry Points and Mental Availability in B2Bstill locked

A6

A6-01 Why International Marketing Knowledge Is Different — The Meta-Openingstill locked

A6-05 Do Sharp's Laws Cross Borders?still locked

A7

A7-01 Why A7 Is Not A10 — The Product Marketing Remitstill locked

A7-04 Launch as Availability Building — Distribution Firststill locked

A7-06 Pricing the New — Skimming, Penetration and the Value Anchorstill locked

A7-07 Product-Led Growth — An Honest Appraisalstill locked

A7-08 Portfolio and Line Decisions — Extend, Prune, Replacestill locked

A7-09 Launch Metrics and the Product–Marketing Partnership — One Scoreboardstill locked

A8

A8-02 Physical Availability Deepened — The Law Side of the Shelfstill locked

A8-05 E-commerce and the Digital Shelf — Same Laws, Different Aislestill locked

A8-06 Retail Media — Big Money, Young Evidencestill locked

A8-07 Promotion Pressure — What Fifty Years of Purchase Data Say About the Dealstill locked

A8-08 Capstone — Omnichannel Is Not a Channel Strategy but One Shelfstill locked

A9

A9-01 This Lecture Ages While You Read Itstill locked

A9-03 Personalisation at Scale — and Its Evidence Problemstill locked

A9-04 AI in Media Buying — the Targeting Temptation Returnsstill locked

A9-06 Distinctiveness When Everyone Has the Same Toolsstill locked

A10

A10-01 Why This Module Carries a Warning Label§ Two kinds of claims

A10-03 Jobs-to-be-Done: The Question Behind the Categorystill locked

A10-06 Transient Advantage: McGrath's Answer to Porterstill locked

A10-07 Crossing the Chasm: Diffusion Beyond the Early Marketstill locked

A10-10 The Innovation Audit: Which Tool Whenstill locked

F1

F1-01 What is Marketing?§ 5. The Art and Science of Marketing

F1-07 The Seven Misconceptions About Marketing§ Misconception 1: "Loyalty is More Profitable Than Acquisition"

F1-08 Integration: the marketer§ 2. The Pattern: Why Marketing Generates False Dichotomies

F2

F2-05 Mental Availability and Category Entry Pointsstill locked

F2-06 Physical Availability and the Buying Situationstill locked

F2-10 Habit, Loyalty, and Repeat Purchasestill locked

F2-12 Integration: the consumerstill locked

F3

F3-01 What Market Research Actually Is§ Part 5: The Hierarchy of Evidence

F3-03 Quantitative Research — Measuring the Whatstill locked

F3-06 Segmentation Researchstill locked

F4

F4-02 Segmentation — Dividing Markets That Don't Want to Be Dividedstill locked

F4-03 Targeting — The Great Mass vs Niche Debatestill locked

F4-04 The Penetration Imperative — the leader disciplinestill locked

F4-06 Differentiation — Real, Relative, and Perceivedstill locked

F4-08 Customer Personas — Useful Fiction or Dangerous Fantasy?still locked

F4-09 STP in B2B Marketsstill locked

F4-11 When STP Goes Wrong — Anti-Casesstill locked

F5

F5-02 The Aaker Model: Five Dimensions of Brand Equitystill locked

F5-03 Keller's CBBE Pyramid: Building Brands Step by Stepstill locked

F5-04 How Brands Grow: The Ehrenberg-Bass Challengestill locked

F5-06 Physical Availability: The Forgotten Growth Leverstill locked

F5-07 Distinctiveness vs. Differentiation: The Core Tensionstill locked

F5-08 Distinctive Brand Assets: Building & Measuringstill locked

F5-11 Brand Health Measurementstill locked

F5-14 Integration: the brandstill locked

F6

F6-03 Price — The Only P That Generates Revenuestill locked

F6-05 Place: Physical Availability and the Unfinished Revolutionstill locked

F6-06 Promotion: Communications Within the Mixstill locked

F6-09 Common Marketing Mix Mistakesstill locked

F8

F8-01 What Digital Marketing Actually Is§ The Fundamentals Travel

F8-02 The Fundamentals Still Applystill locked

F8-04 Social Media — Reach, Attention, and the Engagement Mythstill locked

F8-08 Personalisation and the Privacy Endgamestill locked

F8-10 Integration: the digital marketerstill locked

F9

F9-03 Customer Lifetime Value (CLV) and Its Limitsstill locked

F10

F10-07 The Marketing Team as Systemstill locked

F11

F11-01 What Marketing Ethics Actually Is§ The Both/And core

F12

F12-05 The STP Core — Segmentation, Targeting, Positioning in Practicestill locked

M1

M1-01 The Portability Test — Which Laws Travel and Which Do Notstill locked

M1-02 FMCG — The Evidence Heartlandstill locked

M1-03 Mental and Physical Availability at Full Strengthstill locked

M1-04 The Limits of the FMCG Templatestill locked

M1-05 Do the Laws Hold in Subscription Markets?still locked

M1-08 Double Jeopardy in Banking and Insurancestill locked

M1-11 Long Cycles, Long Memories — Automotive Buying Behaviourstill locked

M1-15 Do the Laws Survive the Prescription Pad?still locked

M1-16 Marketing Under Ethical and Regulatory Constraintstill locked

M1-17 Choosing Care — Insurers, Hospitals and the Annual Switchstill locked

M1-18 The Retailer as Brand — Shopper Lawsstill locked

M1-20 The Sector Test as Methodstill locked

M2

M2-01 Why leadership literature needs a warning labelstill locked

M3

M3-01 The Armoury and the Evidence — the brand as competitive instrumentstill locked

M3-03 Distinctiveness versus Differentiation — the masterclassstill locked

M3-05 Competitive Intelligence — from Dirichlet norms to war gamesstill locked

M3-06 Portfolio as Order of Battle — flankers, fighters and architecture against competitorsstill locked

M4

M4-02 The Evidence — IPA Databank Trends Since 2006still locked

M4-04 60/40 Revisited — Median, Not Lawstill locked

M6

M6-01 The case-study method: a user manual before usestill locked

M6-04 Snickers 'You're Not You': a platform that travelsstill locked

M6-15 Dollar Shave Club: the fairytale and the invoicestill locked

M6-30 Capstone: what does generalise across 28 cases?still locked

Appears in A1 · F2

Related concepts

Byron Sharp NBD-Dirichlet Double jeopardy

Referenced by

Ehrenberg-Bass Institute

Sources

Andrew Ehrenberg (1988)

Machine-written definition; editorial curation in progress.