Category: Experience

💎 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