Personas say what each group values
Impulse adds how each group decides, the tone that lands, what they need to hear, and whether an idea still works under pressure.
Impulse Engine · the motivational layer
Your personas tell you who to talk to. Impulse Engine tells you how to talk to them.
Impulse Engine adds a short trade-off exercise to a study you are already running. It reads the motivation behind each choice and turns it into the tone, the offer and the words each group answers to, on top of your personas, your brand tracker or your concept and communication tests.
Resonance shows who is committed and who is open
Impulse adds the message that would move each group one step closer: the partial customer who could walk, and the non-customer already drawn to you.
A test tells you which idea scores
Impulse adds who it scores with and why, how to position it for each group, and whether the score holds in the moment of choice.
Same signal, different psychology
The same purchase, made for opposite reasons
Two people buy the same cold brew. One wants the taste and the moment. The other wants it cheaper than the café and without the queue. They give the concept the same score, and the message that wins one of them loses the other.
Most segmentations describe who people are or what they say they value. Impulse Engine reads the motivation driving the choice, and it treats that motivation as a state rather than a fixed type, because the same person can choose differently when the moment changes. That is the layer that decides how to say something, once your other research has told you what to say and to whom.
Worked example · Ferrow Coffee Co.
One idea, written four ways
Four personas from a coffee study, each with its own motivational profile. Pick a product and read the message each group would answer to. Nothing to fill in: this is what the motivational layer hands a marketing team.
Compostable Pods
Ferrow pods that go in the home compost, with the same taste as before. $8.99.TraditionalConnection
“The same Ferrow taste you rely on, in pods that go in the home compost. Nothing else changes.”Modelled
- Tone that lands
- Reassuring. Classic. Evidence-based.
- What they need to hear
- This has stood the test of time. It works.
16% of this persona would buy it (n = 128)Measured
PurposeAchievement
“Every pod back to the soil. The coffee you choose finally matches what you stand for.”Modelled
- Tone that lands
- Principled. Inspired. Growth-minded.
- What they need to hear
- This brand believes in something you believe in.
76% of this persona would buy it (n = 115)Measured
Self-GainTraditional
“Under a dollar a cup, and the pods go straight in the compost bin. No extra effort.”Modelled
- Tone that lands
- Precise. Competitive. Outcome-forward.
- What they need to hear
- This is smart. It gets you more with less effort.
41% of this persona would buy it (n = 313)Measured
ExperienceDisruptive
“The pod disappears when you are done. The cup stays with you.”Modelled
- Tone that lands
- Playful. Immersive. Evocative.
- What they need to hear
- This is fun. This is now. And this is for you.
13% of this persona would buy it (n = 110)Measured
Illustrative study. Simulated respondents for Ferrow Coffee Co., a fictional brand, with prices in US dollars. The engine that produced it is the one we run on client studies. Purchase intent is measured in the study; the messages are written from each persona's motivational profile and labelled Modelled.
The full demo goes further, with concept reads, claims, price and a persona you can question: open the Ferrow Persona Engine demo →
What it adds to a persona
From what a group values to how to win it
A driver-based persona tells you what moves the outcome for each group. The motivational layer adds the part a creative team needs next: how the group decides, the tone and offers that work, and what it needs to hear.
Pragmatic Value Seekers
43% of buyers. The largest group and the least loyal. Price and convenience are the levers; emotional appeals barely register.
What drives their loyalty most- Daily ritual
- Convenience
- Price and value
Useful for deciding what to offer. Silent on how to say it, and on whether the group holds its view when something goes wrong.
How to win Pragmatic Value Seekers
Self-GainTraditional
- How they decide
- Analytical, pragmatic, leverage-seeking
- Tone that lands
- Precise. Competitive. Outcome-forward.
- What works
- Value stacking, savings summaries, personal fit
- What they need to hear
- “This is smart. It gets you more with less effort.”
- How the secondary state finishes it
- “Here’s what’s new” becomes “Here’s what still works.”
- Under pressure
- Cold Brew Concentrate falls from 71% to 60%; Mushroom and Coffee Blend rises from 19% to 29%.
At rest and under pressure
Does the answer hold in the moment of choice?
People do not choose in the calm state they answer surveys in. A rush, a stock-out or a price rise can change what someone wants. So every concept is read twice: at rest, and with each buyer's dominant motivation under pressure.
Appeal at restAppeal under pressure
For Experience Enthusiasts, the Cold Brew Can moves most: it drops from 78% appeal at rest to 62% under pressure. Lines in brighter text move by five points or more.
How to read this
A stress test, not a forecast. It shows which ideas are robust for a group and which only work when nothing is going wrong. Shifts under five points are within noise. Simulated respondents for a fictional brand; the reads are labelled Modelled.
Where the idea comes from
Two climbers on the same route, with the same racing heart. One feels excitement, the other anxiety. The difference is not the climb but the motivation each brings to it. That observation, from Greg Streatfield's Honours research, is where Impulse Engine started. Read the origin story →
The framework
Eight motivational states, in four opposing pairs
Only one side of a pair drives a choice at any moment, so each pair is read as a contrast rather than two separate scores. Every person, and every persona, gets a primary state, which sets what the message is about, and a secondary state, which decides how it is finished.
Purpose vs Experience
Purpose
Meaning over momentum
- How they decide
- Identity-led, reflective, values over velocity
- Tone that lands
- Principled, inspired
- Nudge
- “This choice says something about you.”
Experience
Sensation over strategy
- How they decide
- Instinctive, sensory-led, novelty-biased
- Tone that lands
- Playful, immersive, evocative
- Nudge
- “You've never felt anything like this.”
Traditional vs Disruptive
Traditional
Stability over novelty
- How they decide
- Deliberate, comparison-heavy, trust-seeking
- Tone that lands
- Reassuring, classic, evidence-based
- Nudge
- “You can count on this.”
Disruptive
Reinvention over convention
- How they decide
- Fast, gut-led, difference-biased
- Tone that lands
- Defiant, smart, unfiltered
- Nudge
- “Be the first to break the mould.”
Achievement vs Connection
Achievement
Progress over comfort
- How they decide
- Performance-led, outcome-anchored
- Tone that lands
- Aspirational, validating
- Nudge
- “This puts you in a league of your own.”
Connection
Belonging over winning
- How they decide
- Emotion-first, relationship-based
- Tone that lands
- Warm, honest, familiar
- Nudge
- “You're exactly who we made this for.”
Self-Gain vs Collective Impact
Self-Gain
Return over sentiment
- How they decide
- Analytical, pragmatic, leverage-seeking
- Tone that lands
- Precise, outcome-forward
- Nudge
- “You're leaving value on the table.”
Collective Impact
Ripple over return
- How they decide
- Ethical, long-view, ripple-aware
- Tone that lands
- Hopeful, socially conscious
- Nudge
- “You'll feel good and do good.”
See it explained
Six minutes on the eight states
The four pairs, the language each state answers to, and why the same purchase can be made for opposite reasons.
Worked example · Wrenfield Bank
Beyond the message: what to build, and how to bring it to each group
Messaging is the obvious use. The same lens also shapes how a product or service is introduced. In a second worked example, a fictional retail bank wants more customers to make it their main bank. The personas say what each group needs; the motivational layer says how to bring it to them.
Control Seekers
AchievementTraditional
They plan ahead and want to know exactly where they stand. Feeling in control, guidance and security build the relationship.
What to build Measured
- Warn me before I go overdrawn
- Help me save without having to think about it
- Help me plan for big goals
How to introduce it Modelled
“This gets you further. And faster.”
Aspirational. Ambitious. Validating.
Digital Self-Servers
DisruptiveSelf-Gain
Everything through the app, and fast. They rarely want a person; problems fixed first time and rewards carry the weight.
What to build Measured
- Fix problems in the app, first time
- Reward me for staying
- Show me where my money goes each month
How to introduce it Modelled
“This isn’t for everyone. And that’s the point.”
Defiant. Smart. Unfiltered.
Month-to-Month Managers
Self-GainDisruptive
The largest group and the least committed. Breathing room in a tight month, fair fees and an early warning matter most.
What to build Measured
- Give me breathing room when money is tight
- Warn me before I go overdrawn
- No fees I did not expect
How to introduce it Modelled
“This is smart. It gets you more, with less effort.”
Precise. Competitive. Outcome-forward.
Relationship Bankers
ConnectionCollective Impact
The most committed. A person who knows them when something goes wrong, being recognised and fair treatment keep them.
What to build Measured
- A person who knows me when something goes wrong
- Recognise me as a long-standing customer
- Bank with a business that treats people fairly
How to introduce it Modelled
“We understand you. We’ve been there. You’re not alone.”
Warm. Honest. Familiar.
30%One account for everyone
72%One version per group
Share of customers who get at least two of their own three most-wanted needs. That gain comes from the needs map. The motivational layer decides how each version is introduced, in what tone and with what promise.
Illustrative study. Simulated customers for Wrenfield Bank, a fictional bank. The needs are measured in the study; the tone and wording are written from each persona's motivational profile and labelled Modelled.
How it works
It rides on a study you are already running
No separate survey. The trade-off exercise sits in your questionnaire, alongside the persona, tracker or test questions, and your supplier fields it as usual.
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Before fieldwork
Add the trade-off exercise
About three minutes. Respondents pick the statement most and least like them from short sets, written for your category. Forced choices give a clear ranking where rating scales let people agree with everything.
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During fieldwork
Field as normal
Nothing else about the study changes. Your supplier programs it as one more block of questions.
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After fieldwork
Score, join and write the brief
Every respondent gets a profile across the eight states, joined to your personas, tracker segments or test cells, and each group gets its messaging brief.
What lands on your desk
A brief for every group, built on the data you already have
- The primary and secondary state for each persona, segment or test cell, with the base size on every figure
- How each group decides, the tone that lands, the offers that work and what it needs to hear
- Your key message rewritten for each group, as a starting point to test rather than finished copy
- For concepts and messages, the read at rest and under pressure, so you can see which ideas are fragile
- A respondent-level file that joins to Persona Engine, Resonance Engine and your own models
One condition
The motivational layer needs the trade-off exercise in the questionnaire, so it cannot be added to data collected without it. Already have personas? The Upgrade route adds the layer to the personas you use today. See the three routes on the Persona Engine page →
What the examples are
What this page shows, and what it doesn't claim
The coffee and bank studies are simulated, for fictional brands, so you can see the output without anyone's client data. The engine that produced them is the one we run on client studies.
Labelled on every screen
Measured, Modelled, and which is which
What respondents said or did in the study is labelled Measured. Messages, tone and the under-pressure reads are written from the motivational profile and labelled Modelled. Client reports carry the same labels.
What it is not
Not a personality test, and not proof that a message sells
The profile describes what drives a choice in a setting, not a fixed type. Tailored wording is a hypothesis to test in market, on real people. We don't present any of the examples here as evidence that it lifts sales.
Try it on yourself
What drives your own choices?
Five quick tasks from the same exercise, about two minutes. Your primary state shows on screen straight away. Email is optional, if you want the full profile sent to you.
Take the quiz →
No signup needed to see your result
What does Impulse Engine measure?
The motivation driving a choice. A short trade-off exercise places each person across eight motivational states in four opposing pairs: Purpose and Experience, Traditional and Disruptive, Achievement and Connection, Self-Gain and Collective Impact. Each person, and each persona or segment, gets a primary state, which sets what a message should be about, and a secondary state, which decides how it is finished.
Is this a personality test?
No. A personality test describes a fixed trait. Impulse Engine describes the motivation behind a choice in a setting, and the same person can lean the other way when the situation changes. That is why we read each pair as a contrast, and why concepts and messages are read both at rest and under pressure.
Can it run on its own?
It can, as a motivational segmentation. It does most when it sits on top of something that already tells you what to say and to whom: driver-based personas from Persona Engine, the commitment segments from Resonance Engine, or the cells of a concept or communication test.
What does it need in the questionnaire?
About three minutes: a short trade-off exercise where people pick the statement most and least like them from small sets, written for your category. It has to be in the questionnaire, so it cannot be added to data collected without it.
How is it different from psychographic or needs-based segmentation?
Psychographics capture how people describe their attitudes and lifestyle, and rating scales let them agree with everything. Impulse Engine forces trade-offs between motivations, so it ranks what drives the choice, and it attaches the language that works to each state.
Can it run on AI-generated respondents?
We use simulated data, as on this page, to show what the output looks like, and we label it as simulated. Client findings come from real respondents.
Next step
See what the motivational layer would add to your next study
Bring a persona set, a tracker or a test you are planning. In 30 minutes we'll show where the trade-off exercise would sit, what it would add, and what the brief for each group would look like.
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30 minutes · Video call · With Greg Streatfield, founder of Knowsis
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