What is the persuasion knowledge model?
What a meta-analysis, a model from 1994 and two studies of suspicion say about what happens once a shopper recognises a sales tactic.
Answer to the question
What is the persuasion knowledge model?
The persuasion knowledge model, set out by Marian Friestad and Peter Wright in 1994, describes how people use what they have learned about sellers' goals and tactics to cope with a pitch. Once a tactic is recognised, the message is read differently and the seller is rated lower, though the pull of the offer is not removed.
Key takeaways
- A meta-analysis of 148 papers and 171 data sets found that persuasion knowledge raised coping responses and lowered favourable evaluations of marketers, yet could not suppress or eliminate the effect of the persuasion attempt (Eisend and Tarrahi, 2022).
- Marian Friestad and Peter Wright (1994) set out a model of how people build knowledge of persuaders' goals and tactics and use it to cope.
- In a study of two attention-getting television tactics, suspicion of manipulative intent was more likely when viewers felt the balance of investments and benefits was off, and it went with weaker ad attitudes, brand attitudes and purchase intentions (Campbell, 1995).
- People with a prevention focus were more likely to activate persuasion knowledge when cues to intent were moderately noticeable; the difference vanished when cues were very obvious or absent (Kirmani and Zhu, 2007).
- Mindy Weinstein's The Power of Scarcity holds that a limited-supply claim has to be true, since a customer who sees through it discounts the seller.
The persuasion knowledge model describes how people use what they know about selling to read a pitch.
A shopper sees a banner saying only three are left, then notices a clock counting down beside it, and something in the back of the mind says that this looks familiar. Spotting a tactic does not switch persuasion off, but it does change what the message means to the person reading it, and sellers and shoppers both live with that difference.
The persuasion knowledge model
Marian Friestad and Peter Wright published the model in the Journal of Consumer Research. Their starting point was a gap: research on persuasion had largely overlooked what people personally know about the goals and tactics of those trying to persuade them, and how they use that knowledge to cope. The model sets out how this knowledge is built up over a lifetime of being sold to and how it is put to work when a pitch arrives. Our concept note on Persuasion Knowledge holds the longer definition.
The model treats a shopper as someone who has met many offers before and kept notes. A limited-stock banner, a clock counting down, a salesperson who is suddenly very friendly: each is a pattern the shopper may already have filed. When the filing matches, the message is no longer only a message. It is also a tactic, and the shopper can think about it as one.
Mindy Weinstein's The Power of Scarcity gives the model a chapter and draws the lesson for sellers. A claim of limited supply has to be true, because a customer who sees through a manufactured claim discounts the seller and not only the offer. A review of 66 papers on product scarcity, covering work published between 1970 and 2017 and led by Xiaohui Shi, shows how much marketing effort has gone into this one family of cues. The more common the cue, the more chances shoppers have had to learn it.
A pooled analysis of 148 papers and 171 data sets from more than twenty-five years of work on the model, by Martin Eisend and Farid Tarrahi, found that recognising a tactic raised coping responses and lowered favourable evaluations of the marketer, yet the attempt kept working. The effects of recognition were substantial next to the effect of the attempt itself, and still did not cancel it. A recognised tactic is read differently, and the reader does not always walk away. The same analysis maps where the cost to sellers runs highest: personal exchanges, unfamiliar goods whose qualities show only through use, and buyers with more experience behind them.
How suspicion and mindset shape the reading
Suspicion follows fairness, not novelty. Margaret Campbell studied two attention-getting devices common in television advertising and found that viewers were more likely to infer manipulative intent when the balance looked off. The balance in question was between what the viewer invested and gained and what the advertiser gained. Perceptions of that balance tracked the suspicion as predicted. Inferences of manipulative intent went with weaker attitudes toward the ad, weaker attitudes toward the brand and lower purchase intentions. These are associations measured in a study, and they do not say how any one shopper will behave.
That carries over to scarcity cues. A countdown that ends when it says it will, on an offer that does end, gives the shopper a fair account of the deal. A countdown that restarts gives the shopper a reason to doubt the sender. The earlier piece What a Countdown Timer Adds to a Sale looks at the timer itself, and the persuasion knowledge model supplies the reading on the other side of the screen: a shopper with persuasion knowledge about timers treats the clock as evidence about the seller.
Who notices sooner? Amna Kirmani and Rui (Juliet) Zhu proposed that people with a prevention focus, who are oriented toward avoiding a loss or a mistake, are more sensitive to an advertiser's manipulative intent than people with a promotion focus, who are oriented toward gain. The pattern depended on how visible the intent was. When cues to intent were moderately noticeable, prevention-focused people were more likely to activate persuasion knowledge and rated the brand less favourably. When the cues were very obvious, or not noticeable at all, the difference disappeared.
Priming suspicion in promotion-focused people made them react like prevention-focused ones, so mindset matters as much as knowledge. In this work, then, the use of persuasion knowledge depends partly on the mindset a person brings to the page, and not only on what they know. The concept note on Prevention Focus and Promotion Focus describes the two orientations.
Sorting scarcity cues by the motive they aim at, as Which Kind of Scarcity Works on You does, leaves a second question that recognition adds: whether this reader is in a mood to draw on persuasion knowledge at all. What happens once a pitch is spotted, including the gap between what people say about a seller and what still pulls at them, is the ground What Spotting a Sales Pitch Changes covers.
What a fair scarcity cue looks like
If persuasion knowledge lowers the rating of a seller, the practical question is what a fair cue looks like. The research does not test a checklist, so the table sets out our reading of the studies above, with the question each feature answers for the shopper.
| Feature of the cue | Question it answers for the shopper |
|---|---|
| The limit is real and the reason can be stated in a sentence | Does the limit exist? |
| The end point is fixed and stays where it was announced | Who gains from the timing, the buyer or the sender? |
| The shopper gets enough to compare the offer with others | Is the cue helping my decision or replacing it? |
Each row removes something the shopper might otherwise discount. The second answers the balance question that Campbell's study turned on, since a deadline that moves shifts the benefit to the sender. The third leaves room for the shopper's own judgement, which is the thing the model says shoppers use anyway. For reactance, a shopper who feels steered may push back to restore a sense of choice, a pattern covered in Reactance. Recognition and reactance are separate ideas, and the second can follow the first: the tactic is spotted, and then comes the urge to do the opposite.
Common questions
What is the persuasion knowledge model?
It is a model of how people cope with persuasion. Marian Friestad and Peter Wright presented it in 1994, and it describes how people build knowledge about the goals and tactics of those who persuade them and use it when a pitch arrives.
Does spotting a sales tactic stop it working?
Not fully. A meta-analysis of 148 papers found that persuasion knowledge raised coping responses and lowered favourable evaluations of marketers, but it could not suppress or eliminate the effect of the persuasion attempt.
Why do some people notice tactics sooner than others?
One set of studies found that people with a prevention focus were more likely to activate persuasion knowledge when cues to intent were moderately noticeable, and that the difference vanished when the cues were very obvious or absent.
What makes people suspect manipulation in an ad?
A study of two attention-getting television tactics found that suspicion of manipulative intent was more likely when viewers felt the balance of investments and benefits between themselves and the advertiser was off, and that such suspicion went with weaker attitudes toward the ad and the brand and with lower purchase intentions among those viewers.
Sources
Weinstein, M. The Power of Scarcity. Seed book; vault hub Books/The Power of Scarcity.
Friestad, M., & Wright, P. (1994). The persuasion knowledge model: How people cope with persuasion attempts. Journal of Consumer Research, 21(1), 1-31. doi:10.1086/209380 https://doi.org/10.1086/209380
Eisend, M., & Tarrahi, F. (2022). Persuasion knowledge in the marketplace: A meta-analysis. Journal of Consumer Psychology, 32(1), 3-22. doi:10.1002/jcpy.1258 https://doi.org/10.1002/jcpy.1258
Campbell, M. C. (1995). When attention-getting advertising tactics elicit consumer inferences of manipulative intent: The importance of balancing benefits and investments. Journal of Consumer Psychology, 4(3), 225-254. doi:10.1207/s15327663jcp0403_02 https://doi.org/10.1207/s15327663jcp0403_02
Kirmani, A., & Zhu, R. (2007). Vigilant against manipulation: The effect of regulatory focus on the use of persuasion knowledge. Journal of Marketing Research, 44(4), 688-701. doi:10.1509/jmkr.44.4.688 https://doi.org/10.1509/jmkr.44.4.688
Shi, X., Li, F., & Chumnumpan, P. (2020). The use of product scarcity in marketing. European Journal of Marketing, 54(2), 380-418. doi:10.1108/ejm-04-2018-0285 https://doi.org/10.1108/ejm-04-2018-0285