Our brains rarely absorb ideas and facts in one instance: they have to be repeatedly hammered to stick.

we are usually terrible at remembering numbers and facts.

we are much more likely to remember stories that invoke emotion or a personal connection.

one with an anecdote of an immigrant doing something terrible, versus an article on the positive economic impact of immigration, more people will remember the story than the economics. We also like stories that fit well with us and we cling to them.

"The most coherent stories are not necessarily the most probable, but they are plausible."

when people are accused of not knowing facts, they become defensive and look for ways to justify their views.

we forget that attitudes towards immigration have already shifted vastly from previous decades.

The change happened not by pushing facts but through human contact with those people. That is far more powerful than any appeal to facts or reason.

Even when the risk of bias was explicitly pointed out to them, people remained confident that they weren’t susceptible to it

“Even when people acknowledge that what they are about to do is biased,” the researchers write, “they still are inclined to see their resulting decisions as objective.”

we have a cognitive bias to the effect that we’re uniquely immune to cognitive biases.

It turns out the bias also applies to bias. In other words, we’re convinced that we’re better than most at not falling victim to bias.

“used a strategy that they thought was biased,” the researchers note, “and thus they probably expected to feel some bias when using it. The absence of that feeling may have made them more confident in their objectivity.”

why it’s often better for companies to hire people, or colleges to admit students, using objective checklists, rather than interviews that rely on gut feelings.

Bias spares nobody.

these filters will isolate people in information bubbles only partly of their own choosing, and the inaccurate beliefs they form as a result may be difficult to correct."

the proliferation of search engines, news aggregators and feed-ranking algorithms is more likely to perpetuate ignorance than knowledge.

It would seem that excessive social media use may intensify not only feelings of loneliness, but also ideological isolation.

"What the human being is best at doing is interpreting all new information so that their prior conclusions remain intact."

Recent studies show that although most people consume information that matches their opinions, being exposed to conflicting views tends to reduce prejudice and enhance creative thinking.

the desire to prove ourselves right and maintain our current beliefs trumps any attempt to be creative or more open-minded.

"our objects of inquiry are not 'truth' or 'meaning' but rather configurations of consciousness. These are figures or patterns of knowledge, cognitive and practical attitudes, which emerge within a definite historical and cultural context."

the internet is best understood as a cultural lens through which we construct – or distort – reality.

we can only deal with this overwhelming range of choices by ignoring most of them.

trolling is so effective for enticing readers' comments, but so ineffective for changing their viewpoints.

Will accumulating facts help you understand the world?

we have developed a dependency on technology, which has eclipsed our reliance on logic, critical thinking and common sense: if you can find the answer online, why bother thinking?

it is conceivable that individuals' capacity to evaluate and produce original knowledge will matter more than the actual acquisition of knowledge.

Good judgment and decision-making will be more in demand than sheer expertise or domain-specific knowledge.

These divisions, Jasanoff contends, are why neuroscience has failed to make a real difference in anyone’s life.

our bodies and the world around us affect our thoughts, feelings and actions, but not how body and world become biologically embedded to constitute a mind.

a discussion of how the workings of your body necessarily and irrevocably shape your brain’s structure and function, and vice versa.

the experiences we have from infancy onward impact the brain’s wiring. For example, childhood poverty and adversity fundamentally alter brain development, leaving an indelible mark that increases people’s risk of illness in adulthood.

she tries to reduce her anxiety, expand her creativity, improve her math ability, calibrate her inner GPS and take control over her perception of the passing of time, using various brain-hacking techniques. Each chapter is a mini-redemption story, with Williams starting out skeptical and ending victorious.

treat their discomfort not as a damper but as a signal to press on. This is what Mlodinow calls “elastic thinking”

there is the problem that one action can arise out of many different brain states and the same event can trigger many different brain reactions.

we have this useful concept, “working memory,” but the activity described by this concept is widely distributed across at least 30 regions of the brain.

It is probably impossible to look at a map of brain activity and predict or even understand the emotions, reactions, hopes and desires of the mind.

you may order the same salad, but your brain activity will look different, depending on whether you are drunk or sober, alert or tired.

there is the problem of meaning. A glass of water may be more meaningful to you when you are dying of thirst than when you are not.

People can change their brains in unique and unpredictable ways by shifting the patterns of their attention.

we are compelled to rely on different disciplines to try to understand behavior on multiple levels, with inherent tensions between them.

They want to eliminate the confusing ambiguity of human freedom by reducing everything to material determinism.

Instead, however, while there was indeed detectable neural activity for the so-called attended memory item (AMI)—the one that the subjects knew they would need right away—there was none at all for the unattended memory items (UMI), which the subjects might also need, but not until later.

All the same, when subjects were asked about a UMI, a peak appeared for it just as it did for an AMI. In both cases, working memory worked just fine, but in one case it did so without the benefit of any visible storage system.

unattended memories are maintained in what the researchers called “a privileged state” only as long as they had to be.

Whatever the explanation, the work has implications for understanding not just memory but other cognitive functions like perception, attention and goal maintenance.

if noninvasive brain stimulation techniques can be used to reactivate and potentially strengthen latent memories”—in other words, recovering information that had been forever lost.

in the face of a publicly available birth certificate of the 44th President of the United States, there are diverse opinions regarding his birthplace.

But what actually determines whether someone will be persuaded by our argument or whether we will be ignored?

In one study, for example, my colleague Micha Edelson and I, together with others, recorded people’s brain activity while we exposed them to misinformation. A week later we invited everyone back to our lab and told them that the information we gave them before was randomly generated. About half the time our volunteers were able to correct the false beliefs we induced in them, but about half the time they continued believing misinformation.

Science has shown that waiting just a couple of minutes before making judgments reduces the likelihood that they will be based solely on instinct.

good news was more likely to impact people’s beliefs than bad news. But that under stress, negative information, such as learning about unexpectedly high rates of disease and violent acts, is more likely to alter people’s beliefs.

Twitter is perfectly designed to engage our emotions because its features naturally call on our affective system; messages are fast, short and transferred within a social context.

information on Twitter (and other social platforms that use short and fast messages) is particularly likely to be evaluated based on emotional responses with little input from higher cognitive functions.

This structure is called the amygdala and it is important for producing emotional arousal. We found that if the amygdala was activated when people were first exposed to misinformation, it was less likely we would be able to correct their judgments later.

people’s feelings, hopes and fears that play a central role in whether a piece of evidence will influence their beliefs.

Without conscious knowledge of why we’re choosing as we’re choosing, the argument follows, we cannot claim to be exercising “free” will.

If free will is drained of its power by scientific determinism, free-will supporters argue, then we’re moving down a dangerous path where people can’t be held accountable for their decisions, since those decisions are triggered by neural activity occurring outside of conscious awareness.

investigating whether our subjective experience of free will is threatened by the possibility of “neuroprediction” – the idea that tracking brain activity can predict decisions.

The students were then given an article to read about a woman named Jill who tested wearing the cap for a month, during which time neuroscientists were able to predict all of her decisions, including which candidates she’d vote for. The technology and Jill were made up for the study.The students were asked whether they thought this technology was plausible and whether they felt that it undermines free will. Eighty percent responded that it is plausible, but most did not believe it threatened free will unless the technology went beyond prediction and veered into manipulation of decisions.

Our subjective understanding about how we process information to arrive at a decision isn’t just a theoretical exercise; what we think about it matters.

since the 18th century “when people were happy to spout off about what men and women’s brains were like – before you could even look at them. They came up with these nice ideas and metaphors that fitted the status quo and society, and gave rise to different education for men and women.”

she couldn’t find any beyond the negligible, and other research was also starting to question the very existence of such differences. For example, once any differences in brain size were accounted for, “well-known” sex differences in key structures disappeared.

Are there any significant differences based on sex alone? The answer, she says, is no.

“The idea of the male brain and the female brain suggests that each is a characteristically homogenous thing and that whoever has got a male brain, say, will have the same kind of aptitudes, preferences and personalities as everyone else with that ‘type’ of brain. We now know that is not the case.

‘Forget the male and female brain; it’s a distraction, it’s inaccurate.’ It’s possibly harmful, too, because it’s used as a hook to say, well, there’s no point girls doing science because they haven’t got a science brain, or boys shouldn’t be emotional or should want to lead.”

The next question was, what then is driving the differences in behaviour between girls and boys, men and women?

“that the brain is moulded from birth onwards and continues to be moulded through to the ‘cognitive cliff’ in old age when our grey cells start disappearing.

the brain is much more a function of experiences. If you learn a skill your brain will change, and it will carry on changing.”

The brain is also predictive and forward-thinking in a way we had never previously realised.

The rules will change how the brain works and how someone behaves.” The upshot of gendered rules? “The ‘gender gap’ becomes a self-fulfilling prophecy.”

The brain is a biological organ. Sex is a biological factor. But it is not the sole factor; it intersects with so many variables.”

Letting go of age-old certainties is frightening, concedes Rippon, who is both optimistic about the future, and fearful for it.

On the plus side, our plastic brains are good learners. All we need to do is change the life lessons.

One major breakthrough in recent years has been the realisation that, even in adulthood, our brains are continually being changed, not just by the education we receive, but also by the jobs we do, the hobbies we have, the sports we play.

Once we acknowledge that our brains are plastic and mouldable, then the power of gender stereotypes becomes evident.

Beliefs about sex differences (even if ill-founded) inform stereotypes, which commonly provide just two labels – girl or boy, female or male – which, in turn, historically carry with them huge amounts of “contents assured” information and save us having to judge each individual on their own merits

With input from exciting breakthroughs in neuroscience, the neat, binary distinctiveness of these labels is being challenged – we are coming to realise that nature is inextricably entangled with nurture.

The 21st century is not just challenging the old answers – it is challenging the question itself.

One of the most obvious mistakes in Fallon’s reasoning is called the fallacy of reverse inference.

areas of the brain called the ventromedial prefrontal cortex and orbitofrontal cortex are important for empathy and moral reasoning. At the same time, empathy and moral reasoning are lost or impaired in many psychopaths.

The flaw with this argument – as Fallon himself must know – is that there is no one-to-one mapping between activity in a given brain region and complex abilities such as empathy. There is no empathy region and there is no psychopath switch.

these parts of the brain aren’t like hammers or screwdrivers that perform only one task. They’re more like Swiss army knives that have evolved to support a range of different abilities.

just because two things are associated with each other doesn’t mean one of them caused the other.

In neuroscience, confusing correlation with causation is close to unforgivable.

“The human understanding when it has once adopted an opinion…draws all things else to support and agree with it.” If we only seek to confirm rather than falsify our beliefs then we will find that we are always right – or at least it will seem that way.

This confirmation bias is one of the most powerful traps in reasoning because we all like to be right, and we prefer to be consistent.

By consistently interpreting weak evidence in favour of his beliefs, Fallon’s investigation is a case study in bias.

real advances require a self-critical mindset and a strict adherence to the scientific method.

it can be tempting to forget these rules and exploit logical fallacies that we think others won’t notice.

“The first principle is that you must not fool yourself, and you are the easiest person to fool”.

“We have to start recognising the costs of time spent on social media. It’s not just a game – it affects us financially, physically and emotionally.”

The pull-to-refresh and infinite scrolling mechanism on our news feeds are unnervingly similar to a slot machine

“You pull a lever and immediately receive either an enticing reward (a match, a prize!) or nothing,”

We cannot know when we will be rewarded, and more often than not we don’t find anything interesting or gratifying, much like gambling. But that’s precisely what keeps us coming back.

“The rewards are what psychologists refer to as variable reinforcement schedules and is the key to social media users repeatedly checking their screens,”

phone dependency, driven by high social-media usage, can lead us to think our phone is vibrating, or that we have received a message, even when we haven’t.

“There are whole departments trying to design their systems to be as addictive as possible. They want you to be permanently online and by bombarding you with messages and stimuli try to redirect your attention back to their app or webpage.”

Once a habit is formed something previously prompted by an external trigger, like a notification, email, or any sort of ring or ding, is no longer needed, Eyal remarked.It is replaced or supplemented with an internal trigger meaning that we form a mental association between wanting to use this product and seeking to serve an emotional need.

Memory does not work like that. It does not work like a video camera or a DVR.

hypnosis-induced testimony is problematic.

If your goal is to get people to get to their - to the actual memory for the actual scene in question, if they didn't encode it at the time, it's probably not there to be retrieved.

The judge felt Clay should not be treated as a child. This decision was based in part on the outcome of a Rorschach test where a person is asked to look at an inkblot and describe what he sees.

They're not listening to the truth. They don't accept the truth. And when I was growing up, they had this notions about kids should be seen and not heard. And I was being seen, but I was not being heard.

the Justice Department's manual for federal prosecutors says that, in rare cases, forensic hypnosis can aid investigations.

according to the National Registry of Exonerations, there have been at least 10 cases of wrongful conviction that involve hypnosis. Clay would still be in prison today, but a few years ago, he was granted parole and Lisa Kavanaugh helped get his conviction thrown out.

Fred Clay's codefendant, James Watson, is still serving out his sentence. Watson's guilty verdict was based in part on the same problematic eyewitness testimonies that put Clay in prison. Watson is now seeking to have his conviction overturned. Shankar Vedantam, NPR News.

Identify the claim being made

the most popular contrarian argument: “Earth’s climate has changed naturally in the past, so current climate change is natural.”

Construct the argument by identifying the premises leading to that conclusion.

Determine whether the argument is deductive, meaning that it starts out with a general statement and reaches a definitive conclusion.

the first premise is that Earth’s climate has changed in the past through natural processes, and the second premise is that the climate is currently changing.

Not all climate change is equal

Identify hidden premises. By adding an extra premise to make an invalid argument valid, we can gain a deeper understanding of why the argument is flawed.

the hidden assumption is “if nature caused climate change in the past, it must always be the cause of climate change.”

Check to see if the argument relies on ambiguity.

Check the argument for validity; does the conclusion follow from the premises?

Therefore, human activity is necessary to explain current climate change.

If the argument hasn’t yet been ruled out, determine the truth of its premises.

the argument that “if something was the cause in the past, it will be the cause in the future” is invalid if the effect has multiple plausible causes or mechanisms

Bishop thinks psychologists, who use human behaviour to infer how mental processes work, have much more to offer.

Spaced learning is a teaching approach where content is intensively taught multiple times with breaks in between. It was first described by the 19th century psychologist Hermann Ebbinghaus: he found that repetition is crucial for learning, but memories form more readily and durably if these repetitions are spaced out rather than massed together.

The neuroscientists discovered that repeated stimuli, with precisely timed gaps, are one of the most reliable ways to convince neurons that an event is memory-worthy.

Dopamine uptake in this specific context can lead to heightened emotional responses and increased engagement. Moreover, tickling the brain’s reward circuitry in this way can enhance the formation of new memories.

We may not need neuroscience to tell us that teenagers are unresponsive in the morning. But neuroscience can tell us why a good night’s sleep is so crucial for memory consolidation, information processing and creativity. It can also show that most teenagers have a delayed sleep-wake cycle compared with adults.

There’s also the problem of verifying someone’s memory in terms of accuracy. If you ask them to remember the dates of major events, then yes, you can easily determine the accuracy of that.

This may seem like needless pedantry; why would anyone lie about such a thing? Except it’s not that they lie, it’s that they could be remembering it wrongly and not realise they’re doing it.

Sadly, what research there is suggests that those people with incredible memories are just as susceptible to forming “false memories” as anyone else.

What good is being able to remember vast amounts of information if you can’t be sure any of it is accurate?

Those with incredible, innate memory prowess describe it as a mixed blessing at best. The increased demand on your thinking capacity, the constant dwelling in the past, the inability to escape painful or damaging experiences? If someone offered you all that, would you accept?

When people think they’re multitasking, they’re actually just switching from one task to another very rapidly. And every time they do, there’s a cognitive cost in doing so.”

Even though we think we’re getting a lot done, ironically, multitasking makes us demonstrably less efficient.

Multitasking creates a dopamine-addiction feedback loop, effectively rewarding the brain for losing focus and for constantly searching for external stimulation.

The irony here for those of us who are trying to focus amid competing activities is clear: the very brain region we need to rely on for staying on task is easily distracted.

Instead of reaping the big rewards that come from sustained, focused effort, we instead reap empty rewards from completing a thousand little sugar-coated tasks.

His research found that being in a situation where you are trying to concentrate on a task, and an email is sitting unread in your inbox, can reduce your effective IQ by 10 points.

Wilson showed that the cognitive losses from multitasking are even greater than the cognitive losses from pot‑smoking.

If students study and watch TV at the same time, for example, the information from their schoolwork goes into the striatum, a region specialised for storing new procedures and skills, not facts and ideas. Without the distraction of TV, the information goes into the hippocampus, where it is organised and categorised in a variety of ways, making it easier to retrieve.

All this activity gives us a sense that we’re getting things done – and in some cases we are. But we are sacrificing efficiency and deep concentration when we interrupt our priority activities with email.

This uncertainty wreaks havoc with our rapid perceptual categorisation system, causes stress, and leads to decision overload. Every email requires a decision! Do I respond to it? If so, now or later? How important is it? What will be the social, economic, or job-related consequences if I don’t answer, or if I don’t answer right now?

A lever in the cage allowed the rats to send a small electrical signal directly to their nucleus accumbens. Do you think they liked it? Boy how they did! They liked it so much that they did nothing else. They forgot all about eating and sleeping. Long after they were hungry, they ignored tasty food if they had a chance to press that little chrome bar;

But remember, it is the dumb, novelty-seeking portion of the brain driving the limbic system that induces this feeling of pleasure, not the planning, scheduling, higher-level thought centres in the prefrontal cortex. Make no mistake: email-, Facebook- and Twitter-checking constitute a neural addiction.

“I feel like a shadow of my former self. I am not living right now, I am simply existing.”Nicholson-McKellar is far from alone.

“Doctors and scientists wouldn’t necessarily use [brain fog] as a diagnosis as it doesn’t exactly tell you what the problem is and what could be causing that,” says Zandi.

Zandi says there could be many causes of brain fog in Covid survivors, from inflammation in the body to a lack of oxygen to the brain – the latter is a particular concern for those who spent time on ventilators.

terms similar to “brain fog” have previously been used in connection with extreme tiredness, low mood and conditions such as post-traumatic stress disorder (PTSD) – the latter of which is thought to affect about a quarter of Covid survivors who were in intensive care.

The aim of the new work, he says, is to explore whether even those without neurological symptoms show markers of neurological damage, and to what extent any processes are ongoing.

“I’m just existing in this haze-like frame of mind in which I’m constantly on autopilot,” she says.

“What we don’t know is how long it will go on for,” says Zandi. “But we have seen patients who get better and are functioning.”

“The findings need to be replicated under clinical trial conditions, with larger numbers of participants and with robust blinding of subjects and outcome assessors.

induced improvements in working memory might come at the price of worsening of other areas of cognitive function.”

it could also have applications in treating disorders linked to poor working memory, such as schizophrenia and Alzheimer’s disease.

Still, there are psychic effects that come from having this information. I have never seen them so perfectly expressed as by Daniel Ellsberg in a speech he supposedly gave to Henry Kissinger in 1968 as Kissinger was entering the government.

you will forget there ever was a time when you didn’t have it, and you’ll be aware only of the fact that you have it now and most others don’t

it’s often inaccurate