Anchoring
The first number sets the scale for every number after it. One of the most robust findings in the field and one of the most misused.
Behavioural marketing
Consumer Psychology in Marketing
Half of what marketing believes about psychology is real and replicated. The other half is a famous study that failed to replicate, repeated until it became common knowledge. Telling them apart is most of the value, and it is what a qualification is for.
24Biases indexed
47Brands audited
MScI/O Psychology
What is covered
The full bias index →The forces that actually move a buyer
Loss aversion
Losing something is felt roughly twice as hard as gaining the same thing. Real, replicated, and constantly overstretched.
Social proof
Powerful when it is specific and about people like the reader. Nearly worthless when it is a vague number of anonymous customers.
Scarcity and urgency
It works when it is true. Manufactured versions are now enforced against in several markets, and they teach your best customers to distrust you.
Status and identity
Most premium purchases are identity purchases. What the buyer wants is to be a certain kind of person, and the product is the evidence.
The overclaimed ones
Colour psychology, the paradox of choice, and several famous priming results. What survives scrutiny is narrower and more useful than the version in circulation.
The honest version
Colour psychology, in full →What replicates, and what does not
There is a version of consumer psychology that circulates in marketing blogs, and it is not quite the same as the field. It is built from a handful of memorable studies, several of which have since failed to replicate, quoted from each other rather than from the papers.
This matters commercially, not just academically. If you build a pricing page on a finding that did not hold up, the page will not work and you will not know why, because the principle it was built on is still being repeated everywhere as settled fact.
Three that are overclaimed
Colour psychology
Colour affects mood and attention in ways that are measurable. The claim that a specific colour reliably raises conversion across contexts is not supported, and the famous button-colour results are mostly contrast and novelty rather than colour. What is real: contrast, consistency, and what the colour means in that particular market.
The paradox of choice
The original jam study is far less settled than its fame suggests and later meta-analyses found the effect close to zero on average. What survives is narrower and more useful: choice hurts when the options are hard to tell apart, and helps when they are clearly different.
Priming effects from the 2000s
Several of the best-known social priming results have failed to replicate. Building a campaign on them is building on sand, and there are robust findings available that do the same job.
What is solid enough to build on
| Finding | How much to trust it |
|---|---|
| Anchoring | Very strong, replicated many times, works in pricing |
| Loss aversion | Strong, though the exact ratio is argued over |
| Social proof, when specific | Strong. Vague social proof is much weaker |
| Default options | Very strong, and the most under-used of all of these |
| Cognitive load and decision fatigue | Strong for interfaces, and directly measurable |
| Reciprocity | Solid, but small and easy to overstate |
Where persuasion stops and manipulation starts
The line is not a matter of taste and it is increasingly not a matter of opinion either. Several practices that were routine five years ago are now actively enforced against: countdowns that reset, pre-ticked consent, subscriptions that take four screens to leave, confirmshaming.
The practical test I use: would this still work if the customer could see exactly how it was built? Anchoring passes — knowing about anchoring does not stop it helping you judge a price. A fake scarcity counter fails, and the moment it is noticed it costs more than it earned.
How to see this applied
Forty-seven full brand psychology audits are published on this site, free to read: Netflix, Nike, Tesla, Shein, McDonald's, Red Bull, Careem, HBL, Khaadi, Jazz and more. Each takes one brand apart and names what it is doing, including the parts that are ethically uncomfortable.
There is also a free index of twenty-four biases with real brand examples for each, and a written playbook covering all twenty-four with how each one is built and how it breaks.
How to check a claim you read somewhere
You will keep meeting confident psychological claims in marketing writing. Four questions separate the ones worth acting on from the ones that will waste a quarter:
- Is there a study, or only a citation of a citation? Follow it back. A surprising number of famous marketing statistics trace to nothing at all.
- Has it replicated? One striking result is a hypothesis. Several independent replications is a finding.
- Was it measured on people like your customers? Undergraduates choosing between jams is not a purchasing committee choosing software.
- How large was the effect? Real and tiny is common, and a genuine effect of two per cent will not rescue a page that is broken in some larger way.
That is genuinely most of it. The discipline is not knowing more studies than everybody else. It is being willing to say that one did not hold up, about something you would have liked to be true.
The bias index and all forty-seven audits are free to read in full. Start there, not with an invoice.
Run the free audit toolWorking together
Consumer psychology engagements
Fixed scope, fixed price. Everything here is also available free or as a written guide first.
$39/each
Do it yourself
- The Cognitive Bias Playbook, all 24 biases
- The Pricing Psychology Toolkit
- Status and identity marketing
- Delivered as a PDF immediately
$749/brand
Your brand, taken apart the way the published audits were
- What you are actually doing, named
- Where it works and where it is being wasted
- What is ethically exposed, before somebody else finds it
- Written report plus a 45-minute call
- 10 working days
$1,200/month
For teams making these decisions weekly
- Campaign and pricing decisions reviewed
- An honest read on what the research supports
- Direct access, not an account manager
- Cancel any month
FAQs
Consumer psychology questions
Is this the same as behavioural economics?
They overlap heavily. Behavioural economics is mostly about decisions under risk and value; consumer psychology takes in identity, emotion, memory and social context as well. In practice you need both.
Are you going to help me manipulate people?
No. The test I apply is whether a technique still works when the customer can see exactly how it was built. Anchoring passes that test. A fake scarcity counter does not, and it is now enforced against in several markets besides.
Does colour psychology actually work?
Partly, and much less than the popular version claims. Colour affects attention and carries meaning that varies by market. The claim that a particular colour reliably lifts conversion everywhere is not supported — there is a full write-up of this on the site, free.
Can I read your work before hiring you?
Yes, and you should. Forty-seven full brand audits are published here, more than 150,000 words in total, free and complete rather than summarised.
Do you work with agencies?
Yes. Often the useful role is the outside read: the person with no stake in the campaign already being sold internally.
Find out what your brand is actually doing
The same treatment the forty-seven published audits got, applied to you.