With four defenders crowding the receiver, why does the QB throw the ball anyway? Why do people often pay more for an item on eBay than from another store? In Sway: The Irresistible Pull of Irrational Behavior, the Brafman brothers investigate why all of us occasionally make these and other irrational decisions.
What Sway Teaches Us About
Customer Behavior

The book by Ori and Rom Brafman consider why each and everyone of us makes decisions that, looking back, defy all rational thought. People lose money, power, and sometimes lives as a result of these irrational choices. The Brafman brothers point out three major “traps” people fall into when making irrational choices and offer some insight into overcoming them.
The three major rationality traps discussed are loss aversion (how we sink ourselves in deep and take great risks to avoid a possible loss), value attribution (our perception of the value of an item is often no where close to it’s real value), and the diagnosis bias (our blindness to anything that contradicts our first impressions). Let’s take a look at each of these and how they could apply to our marketing strategy.
Loss Aversion: Customer’s Hate Losing
The Brafmans explain it is through loss aversion that we all overreact to perceived loss. We tend to “experience the pain associated with a loss much more vividly than we do the joy of experiencing a gain.” If we see the price in gas move down $.10 a gallon, we think of it as a good thing. If gas goes up $.10 a gallon, our reaction is much stronger. It makes the news. We begin changing travel plans and considering alternate plans. In fact, we’re still reacting to the higher prices even after gas goes back down. Loss aversion also tells us the more we have on the line, the easier it is to get swept into an irrational decision. This is what gets gamblers and to some extent, eBayers in trouble. The more we lose on the craps table, the more apt we are to risk betting more the next time to cover our losses. eBayers who come in second at an auction often pay than more for the same item in the next auction. They don’t want to lose again.
Understanding a customer’s tendency to avoid the pain of loss can help improve your marketing strategy. Raising prices or removing features from product and services can be offset by campaigns that focus on longer-term benefits and overall value. While prices might be going up, the overall experience can be improved by showing how the customer benefits overall. Regardless of whether or not you agree, you can see ExxonMobil doing a good job with their recent green campaigns. They may be one of the most profitable companies in the world, but their campaigns talk about the long term benefits of green technologies.
Value Attribution: Guinness Tastes
Better In Ireland
I have heard this statement most of my drinking-age life. I’m sure you have as well. However, chemically Guinness is the same in America as it is in Ireland. “It is our expectations that change the reality we live in”, the Brafman’s explain. Guinness tastes better in Ireland because we think it should. Value attribution means that we sometimes make irrational decisions by judging a book by it’s cover. Sway provides a great example of a world renown violinist receiving little attention when he put on a ball cap and played his 3.2 million dollar Stradivarius in a Washington DC subway. Our tendency is to place “a person or thing with certain qualities based on our initial perceived value” and then it’s very hard to change that opinion once it’s been cast.
Offering your products and services at a huge discount during the economic downturn may not be the right approach. Customer’s place a lower value on discounted items and therefore may feel they aren’t getting something of good quality. What if someone were to offer you a platinum Rolex for $5000? What about $50? Chances are you’d pass over the real Rolex at the lower price for fear it wasn’t genuine.
Diagnosis Bias: Customer’s Rarely Change
Their First Impressions
The last major trap that contributes to our irrational behavior gives weight to the axiom, “You never get a second chance to make a first impression.” Our diagnosis bias means that once we’ve pigeonholed something or someone into a particular slot, it’s extremely difficult to change our minds. In our first encounters, we tend to dismiss facts, focus on irrelevant items, and assign arbitrary labels to our subjects. Perhaps our date has ugly shoes, or the product brochure has a misspelling, or the customer service rep comes from a different country. Regardless of the details, people tend to make an initial diagnosis of the situation and ignore anything to the contrary.
Understanding this tendency in our customers underscores the importance of the customer experience as a whole. All parts of the brand must be synchronized to produce a consistent message. The website can’t look like a teenager built it on an illegal copy of Photoshop. The customer service reps need to understand the products. The email must respect the customer’s opt-in requests. If these aren’t aligned to produce an overall enjoyable experience for the customer, the company gets lumped in with all the other mediocrity out there and the customer slips away.

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