💎 On how labels can determine how enjoyable our experiences are (cheese and body odour)

Recent research indicates that suggestion not only influences what we smell, but also how we react to smells. In 2005 researchers at Oxford University asked subjects to sniff two odors, one labeled cheddar cheese and the other body odor. Predictably, the subjects rated the body odor as significantly more unpleasant. However, the two smells were identical. Only the labels differed. Consider that the next time you’re enjoying some especially pungent cheese at a cocktail party.

Excerpt from: Elephants on Acid and other bizarre experiments by Alex Boese

💎 On how the sunk cost fallacy can lead to bad decisions (choosing fear of loss over enjoyment)

Hal Arkes and Catehrine Blumer created an experiment in 19S5 which demonstrated your tendency to go fuzzy when sunk costs come along. They asked subjects to assume they had spent S100 on a ticket for a ski trip in Michigan, but soon after found a better ski trip in Wisconsin for S50 and bought a ticket for this trip too. They then asked the people in the study to imagine they learned the two trips overlapped and the tickets couldn’t be refunded or resold. Which one do you think they chose, the $100 good vacation, or the $50 great one?

Over half of the people in the study went with the more expensive trip. It may not have promised to be as fun, but the loss seemed greater. That’s the fallacy at work, because the money is gone no matter what. You can’t get it back. The fallacy prevents you from realizing the best choice is to do whatever promises the better experience in the future, not which negates the feeling of loss in the past.

Excerpt from: You Are Not So Smart: Why Your Memory Is Mostly Fiction, Why You Have Too Many Friends On Facebook And 46 Other Ways You’re Deluding Yourself by David Mcraney

💎 On how the money illusion affects our concept of fairness (a lesson on Wall Street bonuses)

A company is making a small profit. It is located in a community experiencing a recession with substantial unemployment but no inflation. There are many workers anxious to work at the company.

The company decides to decrease wages and salaries 7% this year.

Sixty-two per cent judged the pay cut unfair.

In an another version of the question, the community was said to have ‘substantial unemployment and inflation of 12% . . . The company decided to increase salaries only 5% this year.’ Now 78 per cent said this was acceptable. But of course the workers’ lot is almost identical in both versions. Getting a 5 per cent ‘pay rise’ when prices rise 12 per cent translates into nearly a 7 per cent cut in buying power.

One conclusion is that inflation is the Scroogish employer’s best friend. A similar principle applies to bonuses. It was judged acceptable for a troubled company to skip an annual 10 per cent bonus it had been in the habit of paying, but not to cut pay by 10 per cent for a year. (Wall Street employers, at the mercy of a volatile market, have long made use of this.)

Excerpt from: Priceless: The Myth of Fair Value (and How to Take Advantage of It) by William Poundstone

💎 On how statistics lack emotional impact when compared to images (numbers versus coffins)

For eighteen years, the American media was prohibited from showing photographs of fallen soldiers’ coffins. In February 2009, defence secretary Robert Gates lifted this ban and images flooded on to the Internet. Officially, family members have to give their approval before anything is published, but such a rule is unenforceable. Why was this ban created in the first place? To conceal the true costs of war. We can easily find out the number of casualties, but statistics leave us cold. People, on the other hand, especially dead people, spark an emotional reaction.

Excerpt from: The Art of Thinking Clearly by Rolf Dobelli

💎 On how our expectations of a product shape our experience of it (our beliefs are hard to break)

Consider green goods. Rebecca Strong and I conducted an experiment to quantify the impact of labelling washing-machine tablets as ‘ecologically friendly’.

We sent a group of consumers the same type of washing-machine tablet. They washed a load of clothes and reported back on the tablets performance. The twist was that half were told that they were testing a standard supermarket tablet, the other half a green variant.

Once again, there was an element of subterfuge. We didn’t ask consumers directly what they thought of green goods. Generally, they make positive noises. Instead, we monitored behaviour in test and control conditions.

The results were clear. Those who used the green variant rated the tablet as worse on all metrics.

Respondents scored the eco tablet 9% lower for both effectiveness and likeability, while the number who would recommend the product was 11% lower and the number who would buy it themselves, 18% lower than for the standard version.

Despite eco-friendly products often having a higher price, consumers who tested the green tablet were only prepared to pay £4.41 on average compared to £4.82 for the standard version. Consumers believe that products involve a trade-off: improved eco-friendliness entails corresponding loss in cleaning efficacy. This is a concern for any brand interested in a green variant. If brands in this category are going to successfully sell green variants, they’ll need to counteract these negative associations, or spend heavily to bolster their cleaning credentials.

Excerpt from: The Choice Factory: 25 behavioural biases that influence what we buy by Richard Shotton

💎 On how our behaviour can change the physical make up of our brain (e.g. London cab drivers)

It’s not just repeated physical actions that can rewire our brains. Purely mental activity can also alter our neural circuitry, sometimes in far-reaching ways. In the late 1990s, a group of British researchers scanned the brains of sixteen London cab drivers who had between two and forty-two years of experience behind the wheel. When they compared the scans with those of a control group, they found that the taxi drivers’ posterior hippocampus, a part of the brain that plays a key role in storing spatial representation won much larger than normal.

Excerpt from: The Shallows: How the internet is changing the way we think, read and remember by Nicholas Carr

💎 On how survey answers can be swayed (by how question is asked)

For example, a questionnaire on the number of headaches people experience in one week was given to two different groups of subjects. One group had to indicate whether the number was 1-5, 6-10, 11-15, and so on, while the other was presented with the numbers broken down into 1-3, 4-6, 7-9, etc. The first group reported many more headaches than the second. Moreover, almost everyone is influenced by the two end points of a scale, tending to pick a number that is near the middle.

Excerpt from: Irrationality: The enemy within by Stuart Sutherland

💎 On how modern tech can weaken our memory (smartphone cameras)

But a 2013 study conducted by Linda Henkel of Fairfield University pointed in that direction. Henkel noticed that visitors to art museums are obsessed with taking cell-phone shots of artworks and often are less interested in looking at the art itself. So she performed an experiment at Fairfield University’s Bellarmine Museum of Art. Undergraduates took a guided tour in which they were directed to view specific artworks. Some were instructed to photograph the art, and others were simply told to take note of it. The next day both groups were quizzed on their knowledge of the artworks. The visitors who snapped pictures were less able to identify works and to recall visual details.

Excerpt from: Head in the Cloud by William Poundstone

💎 On how deference to authority can distort memories (status and height)

In the experiment conducted by Wilson on 5 classes of Australian students a man was introduced as a visitor from Cambridge University in England. However, his status at Cambridge was represented differently in each of the classes. To one class, he was presented as a student; to a second class, a demonstrator; to another, a lecturer; to yet another, a senior lecturer; to a fifth, a professor. After he left the room, each class was asked to estimate his height. It was found that with each increase in status, the same man grew in perceived height by an average of a half inch, so that as the “professor” he was seen as two and a half inches taller than as the “student.”

Excerpt from: Influence: The Psychology of Persuasion by Robert Cialdini

💎 On strongest memory of taste tending to be the first bite (olfactory change blindness)

We are all in a constant state of ‘olfactory change blindness’. Intriguingly, this is something that the food companies have been trying to exploit to their, and hopefully our, advantage for a few years now. The basic idea is that you load all the tasty but unhealthy ingredients into the first and possibly last bite of a food, and reduce their concentration in the middle of the product, when the consumers are not paying so much attention to the tasting experience. Just think about a loaf of bread with the salt asymmetrically distributed towards the crust. The consumer will have a great-tasting first bite, and then their brain will ‘fill in’ the rest by assuming that it tastes exactly like the first mouthful did. This strategy will probably work just as long as the meal isn’t high tea and the taster eating cucumber sandwiches with the crusts cut off! Or imagine something like a bar of chocolate, which most people will presumably start and finish at the ends, not in the middle. In fact, Unilever has a number of patents in just this space.

Excerpt from: Gastrophysics: The New Science of Eating by Charles Spence

💎 On the power of social proof and conformity (devaluing their own opinion)

In 1935 the pioneering social psychologist Mazafer Sherif invited people to take part in an experiment using the autokinetic effect. Participants looked at a point of light in a darkened room and were asked to report whether they thought the light was static or moving, a recreation of a natural phenomenon first observed by astronomers who thought that stars were moving. When participants were asked individually opinion was equally divided; however, when they were put into groups people tended to agree with the majority, even if this meant contradicting what they’d said originally. Later, when asked individually, they continued to subscribe to the group view. In other words, when placed in the context of a group, people will devalue their own opinion in the interest of developing an arbitrary position that is acceptable to the group.

Excerpt from: Consumerology: The Truth about Consumers and the Psychology of Shopping by Philip Graves

💎 On how we twist the facts to see what we want to see (personality tests)

Subjects were asked to complete a bogus personality test. The experimenter then gave them all exactly the same sketch of their personalities, which he claimed was based on their test results. When asked about the accuracy of the sketch, 90 per cent of the subjects thought it a very good or excellent description of themselves. People are so good at distorting material to fit their expectations that the identical sketch was thought by each of nearly fifty subjects to apply specifically to him or her.

In addition to trying unconsciously to confirm his or her beliefs, anyone who pays to see a fortune teller will have invested time and money: unless he has just gone for a lark, he will therefore want to feel he has got something out of it (misplaced consistency) and hence will be predisposed to believe what he hears.

Excerpt from: Irrationality: The enemy within by Stuart Sutherland

💎 On the misattribution of arousal (she’s not that into you)

When experiencing heightened emotions, people often mistakenly attribute the cause of arousal to the wrong source. The mind does not make clear and accurate assessments of why we feel a certain mood.

In a famous experiment, young men were asked to cross a high, dangerous suspension bridge. Whilst on the bridge, they interacted with a young female experimenter who offered them the opportunity to call her afterwards to ‘further discuss the research’. The group who met the woman on a high, dangerous bridge showed a much higher propensity to call the woman afterwards vs the control group who met the same woman on a safe bridge. Men in the dangerous bridge condition mistook their high state of emotional arousal for romantic attraction.

Excerpt from: The Unseen Mind by Ogilvy Change

💎 On the importance of brands signalling they’re interested in repeat business (tourist restaurant versus local pub)

What keeps the relationship honest, trusting and mutually beneficial is nothing other than the prospect of repetition.

In game theory, this prospect of repetition is known variously as ‘continuation probability’ or ‘w’. Robert Axelrod has poetically referred to it as ‘the shadow of the future’. It is agreed by both game theorists and evolutionary biologists that the prospects for cooperation are far greater when there is a high expectation of repetition than in single shot games. Clay Shirky has even described social capital as ‘the shadow of the future at a societal scale’. Yet businesses barely consider this at all (in fact procurement, by setting shorter and shorter contract periods, may be unwittingly working to reduce cooperation).

Yet there are, when you think about it, two different approaches to business. There is the ‘tourist restaurant’ approach, where you try to make as much money from people on their single visit. And then there is the ‘local pub’ approach, where you make less money from people on each visit, but you profit(?) more over time by encouraging people to come back. The second type business is much more likely to generate that + yield positive sum outcomes then the first.

Excerpt from: Eat Your Greens by Wiemer Snijders

💎 On our attention becoming scarcer in the age of information (inattention blindness)

In one study of simulated driving led by David Strayer and colleagues at the University of Utah, subjects talking on their phones “missed seeing up to 50 percent of their driving environments, including pedestrians and red lights.” (They were also ten times more likely to not stop at a stop sign.) Another experiment by Strayer and colleagues found that people talking on their phones had slower reaction times than drivers with a blood alcohol level at the legal limit.

What causes these mental deficits? The scientists blame inattention blindness, which occurs whenever the amount of information streaming into the brain exceeds our ability to process it.

Excerpt from: The Smarter Screen: Surprising Ways to Influence and Improve Online Behavior by Shlomo Benartzi and Jonah Lehrer

💎 On our tendency for lower comprehension of texts when read online versus in printed media (keep it simple)

In 1985, at the dawn of the computer age, the psychologist Susan Belmore conducted a simple experiment on twenty undergraduates at the University of Kentucky. The students were exposed to eight different short texts and then asked to answer a series of questions about what they’d just read. Four of the passages appeared on paper (a sheet of white bond, single-spaced, forty-seven characters per line) and four appeared on the monitor of an Apple II Plus 48k computer. Belmore was curious if reading the text on a screen might influence both the speed of reading and levels of comprehension.

The results were depressing, at least if you were an early adopter of computer technology. “These data indicate that reading texts on a computer display is not equivalent to reading the same texts on paper,” Belmore wrote. “Overall, college students took 12 percent longer to read and comprehended 47 percent less with computer-presented text.”

Excerpt from: The Smarter Screen: Surprising Ways to Influence and Improve Online Behavior by Shlomo Benartzi and Jonah Lehrer

💎 On there being no magic number of times an activity needs to be done to fix a bad habit (just keep doing it)

Contrary to popular belief, there isn’t a magic number of repetitions that result in a habit forming. Some say that you need to repeat an action fifty times or for twenty-one days, but very few researchers have actually looked at this question systematically. And those that have done tend to find that there isn’t a clear-cut answer to the question. In one of the few studies to have tracked the formation of healthy habits in real-world settings, researchers studied ninety-six students who had just moved to university and were encouraged to repeat behaviours in response to consistent cues (such as ‘going for a walk after breakfast’). They found that habits formed in some of the students after eighteen days, but for some it took much longer – up to 254 days. The average was sixty-six days.

Excerpt from: Think Small: The Surprisingly Simple Ways to Reach Big Goals by Owain Service and Rory Gallagher

💎 On photos of people with dilated eyes are more attractive (but men are not sure why)

In a recent experiment, men were asked to rank how attractive they found photographs of different women’s faces. The photos were eight by ten inches, and showed women facing the camera or turned in three-quarter profile. Unbeknownst to the men, in half the photos the eyes of the women were dilated, and in the other half they were not. The men were consistently more attracted to the women with dilated eyes. Remarkably, the men had no insight into their decision making.

Excerpt from: Incognito: The Secret Lives of the Brain by David Eagleman

💎 On how rewards can crowd out intrinsic motivation (encouraging people in relation to tasks they dislike)

To test this theory, a few years ago I ran a study in which two groups of people were asked to take part in an experiment in which they spent an afternoon picking up litter in a London park. Participants were told that they were taking part in an experiment examining how best to persuade people to look after their local parks. One group were paid handsomely for their time, while the others were only given a small amount of cash. After an hour or so of backbreaking and tedious work, everyone rated the degree to which they had enjoyed the afternoon. You might think that those clutching a large amount of well-earned cash would be more positive than those who had given their time for very little money.

In fact, the result was exactly the opposite. The average enjoyment rating of the handsomely paid group was a measly 2 out of 10, while the modestly paid group’s average ratings were a whopping 8.5. It seemed that those who had been paid well had thought, ‘Well, let me see, people usually pay me to do things I don’t enjoy. I was paid a large amount, so I must dislike tidying the park.’

Excerpt from: 59 Seconds: Think a little, change a lot by Richard Wiseman

💎 On the value of operational transparency in product design

For example, the bright red Powerball in Finish dishwashing tablets, as well as the salient red centre of Anticol’s medicated throat lozenges, illustrates “this is the hardworking bit.” When we see these products there’s no question in our minds where the unique value or effort is. They’re practically radioactive. As Rory Sutherland writes in Alchemy, the same is true of striped toothpaste.’ Psychologically, the red, blue and white coloured stripes give us a clear signal that the toothpaste is performing more than one function, aiding the belief that this single toothpaste can offer the trifecta of strong teeth, fresh breath and …

Excerpt from: Evolutionary Ideas: Unlocking ancient innovation to solve tomorrow’s challenges by Sam Tatam

💎 On Oasis creatively avoiding having to issue refunds

When technical glitches marred their Manchester concert in June 2009, mega-band Oasis turned to the symbolic power of a signature to rescue them. Recognising the gig’s disruptions, the band sent out an eye watering 1m pounds worth of cheques in reimbursement. “People can obviously cash them in,” a spokesperson told the Manchester Evening News after the band offered the crowd a refund. Their genius? Anticipating that fans would never take them to the bank, every cheque was hand signed by Oasis frontmen Liam and Noel Gallagher. With pen and ink alone, the band saved themselves a fortune.

Excerpt from: Evolutionary Ideas: Unlocking ancient innovation to solve tomorrow’s challenges by Sam Tatam

💎 On the importance of timely feedback

For example, the clever people from Dulux paint recognised that an absence of visual feedback also wreaks havoc for exhausted DIYers looking to decorate white ceilings with white paint (it’s near impossible to know where you have already painted!).

Addressing this issue, Dulux created NeverMiss, a ceiling paint that goes on pink (providing clear feedback against white ceilings) and dries white, helping painters create a uniform finish. Likewise, to prevent ‘creepers’ edging over the speed limit, radar-enabled speed displays providing real-time feedback now reduce speeding by up to 10%. There are nappies that signal when they’re soiled, tissues that change colour when you’re nearing the end of the box, razorblades that turn green when it’s time to change the blades, and even tyres that wear away to reveal the message “change tyre” when your tread becomes dangerously thin.

Excerpt from: Evolutionary Ideas: Unlocking ancient innovation to solve tomorrow’s challenges by Sam Tatam

💎 On how putting numbers in perspective makes them more memorable

Two scientists at Microsoft Research, Jake Hofman and Dan Goldstein, believe in this idea so strongly that they’ve spent the better part of a decade spearheading a project known as the Perspectives Engine with a simple goal: develop tools that make numbers easier for humans to understand.

Microsoft’s search engine, Bing, delivers millions of facts a day in response to queries. The Perspectives team wondered whether some simple contextual phrases would help people understand and remember their numerical search results.

So they did something basic: Instead of just reporting that Pakistan has an area of 340,000 square miles, they added a brief “perspective phrase,” something like “that’s about the size of 2 Californias.” And then, at time scales ranging from a few minutes later to a few weeks later, they tested people to see if they remembered the fact they had been shown.

Some perspective phrases were better than others. Simpler comparisons from more familiar states or countries led to better memory for the facts. But ALL phrases were better than nothing. Even a slightly unwieldy comparison was more effective than a number alone.

Excerpt from: Making Numbers Count: The art and science of communicating numbers by Chip Heath and Karla Starr

💎 On reframing pressure as a privilege as a way to deal with anxiety

King soon began to see that the same principle — that pressure privilege — applied to all kinds of situations and that her anxiety was sign of her motivation to succeed. ‘Great moments carry great weight — that is what pressure to perform is all about. And though it can be tough to face that kind of pressure, very few people get the chance to experience it.’ With that realisation, she saw that she should embrace rather than suppress feelings of stress — a mindset that allowed her to get through her first Grand Slam wins and the enormous media hype around the Battle of the Sexes match against Bobby Riggs in 1973. As she wrote in her memoir, ‘At first, I felt obligated to play Riggs, but I chose to embrace as a privilege the pressure that threatened to over’ whelm me. This changed my entire mindset and allowed me to deal with the situation more calmly. And as time went on, I began to see the match as something I got to do instead of something I had to do. The shy fifth-grader who feared that she would die from her nerves at public speaking became one of our greatest athletes and one of sports most prominent spokespeople.

Excerpt from: The Expectation Effect: How Your Mindset Can Transform Your Life by David Robson

💎 Rituals may have a benefit because they quell anxiety by giving sense of control

One study of free throws in basketball found that players were around 12.4 percentage points more accurate when they followed their personal routines before the shot than when they deviated from the sequence. Overall, the total success rate was 83.8 per cent with the exact routine, compared to 71.4 per cent without. 39 Superstitions and rituals can also boost perseverance and performance across a whole range of cognitive tasks, and the advantages are often considerable.

Excerpt from: The Expectation Effect: How Your Mindset Can Transform Your Life by David Robson

💎 Information isn’t interpreted neutrally, but in line with our existing opinions

The Power of Confirmation

Three scientists, Charles Lord, Lee Ross, and Mark Lepper, recruited forty-eight American undergraduates who either strongly supported the death penalty or strongly opposed it. They presented them with two scientific studies; one offered evidence regarding the effectiveness of capital punishment, and the other data showed its ineffectiveness. In reality, the studies had been fabricated. Lord, Ross, and Lepper had made them up, but the students did not know that. Did the students find the studies convincing? Did they believe that the data provided good evidence that should alter their minds? They did!

But only when the study reinforced their original view. Those students who strongly supported capital punishment thought the study that demonstrated its effectiveness was well conducted. At the same time, they argued that the other study was poorly executed and not compelling. Those who were originally against capital punishment assessed the studies the other way around. As a result, believers in the death penalty left the lab supporting capital punishment with more passion than ever, while those in opposition to it ended up opposing capital punishment with more zest than before.

Excerpt from: The Influential Mind: What the Brain Reveals About Our Power to Change Others by Tali Sharot

💎 On the danger of only evaluating projects on what is easy to quantify

A question was given to a bunch of engineers about fifteen years ago: How do we make the journey to Paris better? They came up with a very good engineering solution, which was to spend £6 billion building completely new tracks from London to the coast and knocking about forty minutes off the 3.5 hour journey time. It strikes me as a slightly unimaginative way of improving a train journey to merely make it shorter. Now, what is the hedonistic opportunity cost of spending £6 billion pounds on railway tracks? Here’s a thought; what you could do is employ the world’s top male and female supermodels, pay them to walk the length of the train handing out free Château Pétrus for the entire duration of the journey. … At which point you’ll still have about £5 billion left in change, and people will ask for the trains to be slowed down.

Excerpt from: Transport for Humans: Are We Nearly There Yet? by Pete Dyson and Rory Sutherland