💎 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

💎 If you give people a sense of control (even an illusory one) they’re happier with their decisions

It is not only humans who like to choose: animals prefer to have a choice as well. In fact, they choose to choose even if having a choice does not change the outcome. If rats need to select between two paths that lead to food—one path is a straight line and the other subsequently requires them to select whether to go right or left—they choose the latter path. Pigeons do the same thing. Give a pigeon two options: the first is a button to peck that results in grain being dispensed, and the second is two buttons from which it needs to select one to peck in order to receive the same grain, and the bird will pick the option with two buttons. The pigeons quickly learn that the seeds are no different; yet they prefer the seeds that were obtained by making a choice.

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

💎 We try and avoid negative information (a lesson in stock market trading)

Figure 5.2. People’s desire to know their own worth is related to market performance. The black line represents the S&P 500, and the gray line represents the number of times people logged on to their accounts to check on their stocks. When the market goes up, people are more likely to take a peek at the value of their holdings than when it goes down.

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

💎 On reading your copy out loud and ‘where you falter, alter’

Peggy Noonan, who wrote speeches for Ronald Reagan has said: ‘Once you’ve finished the first draft of your speech – stand up and speak it aloud. Where you falter, alter.’ That applies especially to speeches, of course: in that case you’re trying to produce something that’s hard to stumble over when spoken aloud. Tongue-twisters such as ‘red lorry, yellow lorry’ are easier on the page than in the mouth. But it is also good advice to the prose writer. There is a developmental connection between reading aloud and reading silently – and there is a neurological one too.

Excerpt from: Write to the Point: How to be Clear, Correct and Persuasive on the Page by Sam Leith

💎 On how transient our beliefs can be

In a study entitled “After the Movies’, some crafty Australian researchers grilled people leaving the cinema about their views on politics and morality; they discovered that those leaving happy films were optimistic and lenient, while those leaving aggressive or sad ones were far more pessimistic and strict.

Excerpt from Help!: How to Become Slightly Happier and Get a Bit More Done by Oliver Burkeman

💎 The friend of creative work is alertness, and nothing focusses your attention like stepping on to unfamiliar ground

In 1958, a young psychologist by the name of Bernice Eiduson began a long-term study of the working methods of forty mid-career scientists. For twenty years, Professor Eiduson periodically interviewed the scientists and gave them a variety of psychological tests, as well as gathering data on their publications. Some of the scientists went on to great success: there were four Nobel Prize winners in the group and two others widely regarded as Nobel-worthy. Several other scientists joined the National Academy of Sciences. Others had disappointing careers.

In 1993, several years after Bernice Eiduson’s death, her colleagues published an analysis of this study, trying to spot patterns. A question of particular interest was: what determines whether a scientist keeps publishing important work throughout his or her life? A few highly productive scientists produced breakthrough paper after breakthrough paper. How?

A striking pattern emerged. The top scientists switched topics frequently. Over the course of their first hundred published papers, the long-lived high-impact researchers switched topics an average of 43 times. The leaps were less dramatic than the ones Erez Aiden likes to take, but the pattern is the same: the top scientists keep changing the subject if they wish to stay productive.

Excerpt from: Messy: How to Be Creative and Resilient in a Tidy-Minded World by Tim Harford

💎 Anchoring – even when taken to ridiculous extremes – has an affect on people’s judgements

Psychologists Gretchen Chapman and Brian Bornstein tested this idea in a 1996 experiment, when Liebeck v. McDonald’s was much in the news. They presented eighty students from the University of Illinois, U.S.A., students with the hypothetical case of a young woman who said she contracted ovarian cancer from birth control pills and was suing her health care organization. Four groups each heard a different demand for damages: $100; $20,000; $5 million; and $1 billion. The mock jurors were asked to give compensatory damages only. Anyone who wants to believe in the jury system must find the results astonishing.

The jurors were amazingly persuadable, up through the $5 million demand. The lowball $100 demand got a piddling $990 average award. This was for a cancer said to have the plaintiff ‘almost constantly in pain… Doctors do not expect her to survive beyond a few more months.’

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

💎 People lie on surveys (and in their Netflix queues) both consciously and unconsciously

Netflix learned a similar lesson early on in its life cycle: don’t trust what people tell you; trust what they do. Originally, the company allowed users to create a queue of movies they wanted to watch in the future but didn’t have time for at the moment. This way, when they had more time, Netflix could remind them of those movies. However, Netflix noticed something odd in the data. Users were filling their queues with plenty of movies. But days later, when they were reminded of the movies on the queue, they rarely clicked. What was the problem? Ask users what movies they plan to watch in a few days, and they will fill the queue with aspirational, highbrow films, such as black-and-white World War II documentaries or serious foreign films. A few days later, however, they will want to watch the same movies they usually want to watch: lowbrow comedies or romance films. People were consistently lying to themselves.

Excerpt from: Everybody Lies: Big Data, New Data, and What the Internet Can Tell Us About Who We Really Are by Seth Stephens-Davidowitz

💎 On the underrated value of ‘interstitial time’

There’s a popular subgenre of books about writing known informally as ‘writer porn’, in which famous authors describe their daily routines, which pens they use and, especially, the secluded mountain-top cabins where they work each morning for six blissfully undisturbed hours. I don’t think I’ve ever actually met such an author, but for anyone whose job is even slightly ‘creative’, they stir envy: we’d all love such big chunks of time in which to focus. Instead, our lives are plagued with what the blogger Merlin Mann, at 43folders.com, calls ‘interstitial time’ – small chunks of minutes spent waiting at the doctor’s surgery, or for someone who’s late, or for a meeting postponed at short notice.

It feels like time wasted. But it needn’t be. The poet William Carlos Williams, for example, wrote much of his oeuvre on the backs of prescription pads during gaps in his workday as a paediatrician.

Excerpt from Help!: How to Become Slightly Happier and Get a Bit More Done by Oliver Burkeman

💎 On life being understood backwards but lived forward – what’s obvious in retrospect is often hard to see at the time

As the philosopher Søren Kierkegaard noted in his journal in 1843, ‘It is perfectly true, as the philosophers say, that life must be understood backwards. But they forget the other proposition, that it must be lived forwards.” The day-by-day business of living feels, at this particular moment, spectacularly distant from the ways in which I and others will come to comprehend these events.

Yet this is just an extreme version of something that is always true. Human understanding is always both provisional and belated. Many things that appear obvious in retrospect were anything but obvious at the time, because the clarity we experience when looking back in time is utterly unlike the cloud of uncertainty that surrounds day-today existence. The world is far more complex than any stories we can tell about it; far more mysterious, far harder to predict.

Excerpt from: How to Think: Your Essential Guide to Clear, Critical Thought by Tom Chatfield

💎 Why supermarkets change prices: it’s a way of ascertain who is price sensitive

One common situation is for two supermarkets to be competing for the same customers. As we’ve discussed, it’s hard for be systematically more expensive than the others without losing a lot of business, so they will charge similar prices on average, but both will also mix up their prices. That way, both can distinguish the bargain hunters from those in need of specific products, like people shopping to pick up ingredients for a cook-book recipe they are making for a dinner party. Bargain-hunters will pick up whatever is on sale and make something of it. The dinner-party shoppers come to the supermarket to buy specific products and will be less sensitive to prices. The price-targeting strategy only works because the supermarkets always vary the patterns of their special offers, and because it is too much trouble to go to both stores or to order two separate internet deliveries, carefully comparing the price of each good every time we go online. If shoppers could predict what was to be discounted, they could choose recipes ahead of time, and even choose the appropriate supermarket to pick up the ingredients wherever they’re least expensive.

Excerpt from: The Undercover Economist by Tim Harford

💎 If you can’t make it shorter, make it feel shorter

Indefinite wait seems longer then defined ones, writes David Maiste in his paper “The Psychology of Waiting Lines’, which is why Disney theme parks use complex formulae to calculate and display wait-times. ‘Pre-process’ waits seem longer than ‘in process’ waits, which is why restaurants will seat you before they’re ready to serve you. Customers are happier when queues are acknowledged: when a supermarket calls ‘all staff to the checkouts’, it’s as much about you hearing it as about staffing. And occupied time passes faster than unoccupied time: mirrored walls are especially effective, apparently because most people love looking at themselves.

Excerpt from Help!: How to Become Slightly Happier and Get a Bit More Done by Oliver Burkeman

💎 An explanation as to how groups (and companies) make decisions which are favoured by none of their members

The article is called “The Abilene Paradox’, and it’s by the management theorist Jerry Harvey; it begins with a personal anecdote set not at Christmas but during a stiflingly hot Texas summer. Harvey and his wife were staying with her parents, and relaxing one afternoon when his father-in-law suggested a trip to Abilene, 50 miles away, for dinner. Harvey was appalled at the thought of driving ‘across a godforsaken desert, in a furnace-like temperature … to eat unpalatable food. But his wife seemed keen, so he kept his objections to himself.

The experience was as terrible as he’d predicted. Later, trying to be upbeat, he said, “That was a great trip, wasn’t it?’ but one by one, each family member confessed they’d hated they had agreed to go only because they believed it was what the others wanted. “Listen, I never wanted to go to Abilene”, Harvey’s father-in-law said. “I just thought you might be bored?”

Excerpt from Help!: How to Become Slightly Happier and Get a Bit More Done by Oliver Burkeman

💎 The happiness benefits of closing down our options

Once, in an experiment, the Harvard University social psychologist Daniel Gilbert and a colleague gave hundreds of people the opportunity to pick a free poster from a selection of art prints. Then he divided the participants into two groups. The first group was told that they had a month in which they could exchange their poster for any other one; the second group was told that the decision they’d already made had been final. In follow-up surveys, it was the latter group — those who were stuck with their decision, and who thus weren’t distracted by the thought that it might still be possible to make a better choice — who showed by far the greater appreciation for the work of art they’d selected.

Excerpt from: Four Thousand Weeks: Embrace your limits. Change your life by Oliver Burkeman

💎 On knowing how a story ends doesn’t spoil the enjoyment

By promoting one technique, the twist, and one effect, surprise, stories get bent out of shape. They try too hard to counter expectation and resist predictability. The Lord of the Rings is totally predictable from beginning to end, but the series does not suffer for it. William Shakespeare gave away the end of his tragedies by billing them as such and no one seemed to mind (Romeo and Juliet even told the audience the story in a prologue). Columbo, a classic crime serial, reveals who committed the murder at the beginning of each episode and succeeded in making the investigation thrilling to watch. Stories that promote surprise over character end up as mere soap opera, a series of sensational shocks. That corrodes credibility, while some reveals – it was all a dream! – do not so much blow minds as waste time. More significant than all of this, though, is the fact that surprise is overrated. A study carried out by Jonathan Leavitt and Nicholas Christenfeld of the University of California, San Diego, in 2011 found that knowing how the story ends doesn’t hamper enjoyment – it increases it. Fittingly, the researchers announced their conclusion in the title of their me “Story spoilers don’t spoil stories”.

Excerpt from: Unconventional Wisdom: Adventures in the Surprisingly True by Tom Standage

💎 The corrupting influence of even a modicum of power

In 1998, Keltner and his team had small groups of three volunteers come into their lab. One was randomly assigned to be the group leader and they were all given a dull task to complete. Presently, an assistant brought in a plate containing five cookies for the group to share. All groups left one cookie on the plate (a golden rule of etiquette), but in almost every case the fourth cookie was scarfed down by the leader. What’s more, one of Keltner’s doctoral students noticed that the leaders also seemed to be messier eaters. Replaying the videos, it became clear that these ‘cookie monsters’ more often ate with their mouths open, ate more noisily and sprayed more crumbs on their shirts. Maybe this sounds like your boss?

Excerpt from: Humankind: A Hopeful History by Rutger Bregman

💎 How empathising can lead to immoral decisions

Take the following study carried out by another psychologist. In this experiment, a series of volunteers first heard the sad story of Sheri Summers, a ten-year-old suffering from a fatal disease. She’s on the waiting list for a life-saving treatment, but time’s running out. Subjects were told they could move Sheri up the waiting list, but they’re asked to be objective in their decision. Most people didn’t consider giving Sheri an advantage. They understood full well that every child on that list was sick and in need of treatment. Then came the twist. A second group of subjects was given the same scenario, but was then asked to imagine how Sheri must be feeling: Wasn’t it heartbreaking that this little girl was so ill? Turns out this single shot of empathy changed everything. The majority now wanted to let Sheri jump the line. If you think about it, that’s a pretty shaky moral choice. The spotlight on Sheri could effectively mean the death of other children who had been on the list longer.

Excerpt from: Humankind: A Hopeful History by Rutger Bregman