The big idea: The ACT model — attract, converse, transact — describes how a user meets a product, and maps onto desirability, usability and usefulness.
One stage after another: They are sequential: a product that fails to attract is never used, however good it is, and users are lost at every stage.
Three stages, three qualities, and the drop-off at every one.
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| Stage | Quality | What a designer controls | How it fails |
|---|---|---|---|
| Attract | Desirability | Form, colour, finish, material, the photograph, the shelf presence, the first three seconds | A product nobody picks up. It may be excellent and it will never be found out |
| Converse | Usability | Affordances, labelling, feedback, the shape of a control, what happens when a button is pressed | A product nobody understands. The user returns it, or uses one function of twelve for its whole life |
| Transact | Usefulness | Performance, reliability, the result the user came for, and whether they would buy another | A product that disappoints — and the user feels cheated precisely because the first two stages promised something |
Each stage is a filter: Users are lost at every one, and the earlier the loss the more invisible it is: nobody reports not having picked a product up.
That is why desirability is not decoration — it is the stage that decides whether the other two ever happen.
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| Failure | What it looks like | The fix |
|---|---|---|
| Attractive, unusable | A beautiful kettle whose lid nobody can open, or a minimal remote with unlabelled buttons | Affordances and feedback: make the control look like what it does, and make the product respond when it is used |
| Usable, unattractive | A product that works perfectly and sells nothing, sitting beside a worse one that sells | Desirability is a requirement, not a luxury — form, finish and presentation are part of the specification |
| Attractive, usable, useless | A gadget that is delightful for a week and then lives in a drawer | Check that the transact stage delivers something the user actually wanted repeatedly, not once |
| Overpromising at attract | A product whose packaging suggests far more than it does | An honest attract stage: the user who feels cheated is worse than the user who was never interested |
ACT and the four pleasures fit together: ACT describes the sequence; the four pleasures describe what is felt at each stage.
Attract is where physio and ideo pleasure do most work; converse is mostly psycho-pleasure; transact is where usefulness and socio-pleasure decide whether the product is kept.
How this is tested — suggesting how the ACT model creates positive emotional responses. It comes up two ways:
Paper 1 — multiple choice
- Identify the ACT stage a described feature belongs to.
- Match a stage to desirability, usability or usefulness.
Paper 2 — analysing a product
- Apply the ACT model to a named product.
- Explain why a product failed at one of the three stages.
The trap: Treating the three as synonyms for good design. They are sequential and each fails differently — a product nobody notices, a product nobody understands, and a product that disappoints.
A company launches a reusable coffee cup that sells poorly despite good reviews. Apply the ACT model to diagnose the problem and recommend changes.
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