The branding canon: what to read, in which order, and what it argues about

Origin

There is no single origin, which is the point of a canon. The works arrived from three directions over fifty years and were only later read as one subject.

From advertising practice. Rosser Reeves wrote Reality in Advertising in 1961 and gave the trade the unique selling proposition. Ries and Trout published The Positioning Era Cometh as three articles in Advertising Age in 1972 and the book in 1981 [1]. These are practitioners writing down what seemed to work.

From academic marketing. Theodore Levitt’s Marketing Myopia in 1960 asked what business a company is really in [2]. David Aaker’s Managing Brand Equity in 1991 and Kevin Lane Keller’s customer-based brand equity paper in 1993 turned the brand from a logo into an asset with a structure [3][4]. Andrew Ehrenberg, working from purchase panels since the 1950s, built the empirical floor that Byron Sharp’s How Brands Grow stood on in 2010 [5].

From psychology. Robert Zajonc showed in 1968 that exposure alone produces liking [6]. Kahneman and Tversky published prospect theory in 1979 [7]. Antonio Damasio argued in 1994 that emotion is part of the machinery of deciding [8]. Reber, Schwarz and Winkielman set out processing fluency in 2004 [9]. McClure and colleagues scanned people drinking cola in the same year [10].

Nobody in the third group was writing about brands. Everybody in the first two groups now cites them.

What the evidence shows

The question a canon page can answer with data is which works the field actually leans on, as opposed to which it says it admires.

Kahneman and Tversky, 1979, Prospect theoryField: psychology48,508

Keller, 1993, Customer-based brand equityField: marketing10,495

Zajonc, 1968, Mere exposureField: psychology6,795

Reber, Schwarz and Winkielman, 2004, Processing fluencyField: psychology2,946

Aaker and Keller, 1990, Brand extensionsField: marketing2,473

Keller and Lehmann, 2006, Brands and brandingField: marketing2,337

McClure et al, 2004, Coke and PepsiField: neuroscience1,373

One psychology paper outweighs every indexed marketing paper on the list combined. Books, including Ries and Trout, Aaker and Sharp, are not reliably indexed by OpenAlex and are not shown.

Source: OpenAlex citation counts, fetched 7 October 2026. Brave New Media.

Unit: citations

Show the data

Work	Field	Citations, OpenAlex, 7 Oct 2026
Kahneman and Tversky, 1979, Prospect theory	psychology	48,508
Keller, 1993, Customer-based brand equity	marketing	10,495
Zajonc, 1968, Mere exposure	psychology	6,795
Reber, Schwarz and Winkielman, 2004, Processing fluency	psychology	2,946
Aaker and Keller, 1990, Brand extensions	marketing	2,473
Keller and Lehmann, 2006, Brands and branding	marketing	2,337
McClure et al, 2004, Coke and Pepsi	neuroscience	1,373

Citation counts from OpenAlex, fetched 7 October 2026, for the core works in this section [11]. The order is instructive. Kahneman and Tversky’s 1979 prospect theory paper has over 48,000 citations, more than every marketing work on the list combined. Keller 1993 is the most cited marketing paper here at roughly 10,500. Zajonc 1968 sits at 6,800, Reber 2004 at 2,900. The marketing frameworks that practitioners quote most, Ries and Trout, Aaker, Sharp, are books, which OpenAlex indexes less reliably, so their counts are not shown and their influence is understated by this measure. Levitt 1960 is excluded because OpenAlex returns a 2010 reprint rather than the original.

Two things to take from the chart. First, the psychology is where the weight is. The marketing literature borrows its mechanisms from a body of work that is an order of magnitude larger and better replicated than itself. Second, within marketing, the measurable models, Keller’s especially, are cited far more than the practitioner frameworks, because academics cite what they can test.

The positioning line

1. 1961Reeves, Reality in Advertising
2. 1972Ries and Trout, The Positioning Era Cometh
3. 1981Ries and Trout, Positioning
4. 1991Aaker, Managing Brand Equity
5. 1993Keller, customer-based brand equity

The empirical line

1. 1950sEhrenberg's panel papers
2. 1984The Dirichlet
3. 2010Sharp, How Brands Grow
4. 2018Romaniuk

The psychology underneath

1. 1968Zajonc, mere exposure
2. 1979Kahneman and Tversky, prospect theory
3. 1994Damasio, Descartes' Error
4. 2004Reber, Schwarz and Winkielman, processing fluency

Picked up by marketing writers mostly after 2011.

The positioning line runs 1961, 1972, 1981, 1991, 1993. The empirical line runs from Ehrenberg's panel papers through the Dirichlet in 1984 to Sharp in 2010 and Romaniuk in 2018. The psychology sits underneath, 1968, 1979, 1994, 2004, and is picked up by marketing writers mostly after 2011.

Source: Illustrative. Publication years from the Sources list. Brave New Media, 2026.

The timeline puts the works in order and shows the two traditions forming. The positioning line runs 1961, 1972, 1981, 1991, 1993. The empirical line runs from Ehrenberg’s early panel papers through the Dirichlet in 1984 to Sharp in 2010 and Romaniuk in 2018. The psychology runs underneath both, 1968, 1979, 1994, 2004, and is picked up by marketing writers mostly after Kahneman’s Thinking, Fast and Slow made it legible in 2011.

The challenge

The argument between the two marketing traditions is the live one, and this section’s entries take it up one piece at a time. Stated whole:

The positioning tradition says a brand is a meaningful difference held in the buyer’s mind, that the contest is for a position a competitor has left open, and that equity is built by making the difference clear and keeping it [1][3][4].

The Ehrenberg-Bass tradition says buyers of most brands cannot name a point of difference, that loyalty follows size rather than leading it, that brands grow through penetration, and that the job is to be recognised and easy to buy for as many category buyers as possible [5].

They are not reconcilable at the level of slogan. They are partly reconcilable at the level of scope. The Ehrenberg-Bass evidence is strongest in frequently bought categories with low involvement. The positioning tradition’s claims are strongest in considered, infrequent, high-value purchases where a buyer builds a shortlist and compares. Most B2B sits closer to the second, and the entries in this section say so where it matters.

The challenge to the psychology is different in kind. It is not a rival theory but a replication record. Mere exposure has replicated well across hundreds of studies [6]. Loss aversion is contested as a general principle [7]. The somatic marker hypothesis has had its central experiment challenged on method [8]. The dual-process framing that Kahneman popularised is treated by some cognitive scientists as a useful fiction rather than an architecture. Each entry in this section says where its mechanism stands, and a reader should not take the chart above as a ranking of truth. Citation measures use, not correctness.

Where I see this go wrong

The field is read in the wrong order. People read Sharp first, because it is recent and combative, and then read Ries and Trout as the thing Sharp refuted. That misses that Ries and Trout were solving a real problem in 1972, an advertising industry drowning in sameness, and that the position they described is still what a shortlist is made of. Read them in the order they were written and the argument makes sense as an argument.

The psychology is quoted, not read. Kahneman is cited in nearly every brand deck I see and the citation is almost always to a popularisation. The 1979 paper is twenty-eight pages and most of the claims attached to it in marketing are not in it. The same is true of Zajonc. Read the paper. It is shorter than the book about the paper.

One tradition is adopted as a religion. An agency decides it is Ehrenberg-Bass or it is positioning, and then every client gets the same answer. The data does not support a single answer across categories. It supports knowing which category you are in.

I came to this literature after eight years in television, media and investment, and the thing that struck me was how much of it was already settled in those industries under other names. Television knew about reach and frequency before Sharp wrote it down. Investment knew about loss aversion before Kahneman named it. The marketing canon is partly a translation.

What to do with it

1. Read in this order. Levitt 1960 for the question. Ries and Trout 1981 for the first answer. Aaker 1991 and Keller 1993 for the structure. Sharp 2010 for the objection. Romaniuk 2018 for the resolution that works in practice. Binet and Field 2013 for what it costs.
2. Then read the psychology, in the original. Zajonc 1968, Kahneman and Tversky 1979, Reber 2004. Each is a journal paper of under thirty pages. Skip the books about them until you have.
3. For every mechanism you plan to rely on, check its replication record first. This section gives it for each. A mechanism with a contested record is a hypothesis, not a plan.
4. Decide which tradition your category sits closer to, on evidence. Purchase frequency, involvement, shortlist behaviour. Then borrow from the other where it fits.
5. When you quote a work, quote the work. Author, year, the claim as made. A deck that says “Kahneman says” without a page is a deck that has not read Kahneman.
6. Treat this page as a reading list, not a syllabus. The entries in this section are the syllabus. This is the order to take them in.

If you run the company rather than the marketing

You do not need to read all of this. You need to know that it exists, that it disagrees with itself, and that the disagreement has a shape.

When a marketing team or an agency proposes a brand strategy, ask which tradition it comes from. If the answer is positioning, ask how they know buyers perceive the difference they are proposing to build. If the answer is Ehrenberg-Bass, ask how they know your category behaves like a frequently bought one. If the answer is “we use the best of both”, ask them to name which part comes from where. A team that cannot has not read either.

The psychology is simpler to handle. Any claim about how the brain receives a brand should come with a paper, a year and a replication status. If it comes with a book title and an anecdote, it is a story, and you are being asked to fund a story.