Facial masculinity does not indicate immunocompetence

From Zeidi et al.:

Significance

Facial masculinity has been considered a sexual ornament in humans, akin to peacock tails and stag antlers. Recently, studies have questioned the once-popular view that facial masculinity is a condition-dependent male ornament signaling immunocompetence (the immunocompetence handicap hypothesis). We sought to rigorously test these ideas using high-resolution phenotypic (3D facial images) and genetic data in the largest sample to date. We found no support for the immunocompetence handicap hypothesis of facial masculinity in humans. Our findings add to a growing body of evidence challenging a popular viewpoint in the field and highlight the need for a deeper understanding of the genetic and environmental factors underlying variation in facial masculinity and human sexual dimorphism more broadly.

Abstract

Recent studies have called into question the idea that facial masculinity is a condition-dependent male ornament that indicates immunocompetence in humans. We add to this growing body of research by calculating an objective measure of facial masculinity/femininity using 3D images in a large sample (n = 1,233) of people of European ancestry. We show that facial masculinity is positively correlated with adult height in both males and females. However, facial masculinity scales with growth similarly in males and females, suggesting that facial masculinity is not exclusively a male ornament, as male ornaments are typically more sensitive to growth in males compared with females. Additionally, we measured immunocompetence via heterozygosity at the major histocompatibility complex (MHC), a widely-used genetic marker of immunity. We show that, while height is positively correlated with MHC heterozygosity, facial masculinity is not. Thus, facial masculinity does not reflect immunocompetence measured by MHC heterozygosity in humans. Overall, we find no support for the idea that facial masculinity is a condition-dependent male ornament that has evolved to indicate immunocompetence.

Oligarchia - the rise of autonomous analog computing

I want to pass on the final paragraphs of a piece done by George Dyson for Edge.org:

We assume that a search engine company builds a model of human knowledge and allows us to query that model, or that some other company (or maybe it’s the same company) builds a model of road traffic and allows us to access that model, or that yet another company builds a model of the social graph and allows us to join that model — for a price we are not quite told. This fits our preconceptions that an army of programmers is still in control somewhere but it is no longer the way the world now works.

The genius — sometimes deliberate, sometimes accidental — of the enterprises now on such a steep ascent is that they have found their way through the looking-glass and emerged as something else. Their models are no longer models. The search engine is no longer a model of human knowledge, it is human knowledge. What began as a mapping of human meaning now defines human meaning, and has begun to control, rather than simply catalog or index, human thought. No one is at the controls. If enough drivers subscribe to a real-time map, traffic is controlled, with no central model except the traffic itself. The successful social network is no longer a model of the social graph, it is the social graph. This is why it is a winner-take-all game. Governments, with an allegiance to antiquated models and control systems, are being left behind.

These new hybrid organizations, although built upon digital computers, are operating as analog computers on a vast, global scale, processing information as continuous functions and treating streams of bits the way vacuum tubes treat streams of electrons, or the way neurons treat information in a brain. Large hybrid analog/digital computer networks, in the form of economies, have existed for a long time, but for most of history the information circulated at the speed of gold and silver and only recently at the speed of light.

We imagine that individuals, or individual algorithms, are still behind the curtain somewhere, in control. We are fooling ourselves. The new gatekeepers, by controlling the flow of information, rule a growing sector of the world.

What deserves our full attention is not the success of a few companies that have harnessed the powers of hybrid analog/digital computing, but what is happening as these powers escape into the wild and consume the rest of the world.

The next revolution will be the ascent of analog systems over which the dominion of digital programming comes to an end. Nature’s answer to those who sought to control nature through programmable machines is to allow us to build machines whose nature is beyond programmable control.

Feedspot: MindBlog in top 100 psychology blogs

I am clueless about monitoring traffic on MindBlog, have been puzzled why I get 3-5 emails a week wanting to contribute content, share content, sell me some editing or other services, assist in 'monetizing' my site more effectively. Google is constantly on my case to place advertisements on MindBlog. My cut and paste answer to all such emails is "I must decline your kind offer. MindBlog is my own idiosyncratic hobby, and I only post content that I initiate. I am not concerned about number of followers, and have no interest in revenue." A recent offer to provide editing services finally clued me in to at least one source that contributes to all these emails. They sent their solicitation to the top 100 Psychology Blog identified by feedsport.com. Turns out that MindBlog is currently number 46.

Fake News: The misinformation machine.

I want to pass on the abstract of a Science article by Grinberg et al. and parts of a commentary on it, work on what misinformation is and how it operates that was immediately picked by by national media. Starting with the commentary by Derek Ruths:

In recent years, there has been an explosion of research trying to understand misinformation: what it is, how it operates, and what impacts it has on the world. On the surface, this roiling field seems to produce as many paradoxes and conflicting results as it does potential insights. For example, some studies suggest that bots (internet robots) play a limited role, whereas other studies suggest that bots drive the diffusion of misinformation. It is ironic that the field of research on misinformation has come to resemble the very thing it studies. What is true? What is actually known about misinformation and its impacts on society? A single research paper may interrogate only one aspect of what is a complex misinformation machine, making it tempting to see other papers as providing competing views, when they are, in fact, often entirely complementary windows into a much larger process. Grinberg et al. illustrate the necessity of thinking of misinformation as a process.

Grinberg et al. show that online, mostly political misinformation is shared and seen by only a very small fraction of Twitter users...to small communities that engage with questionable media sources. To do this, they used a clever method to find humans (as opposed to bots) on Twitter: They matched U.S. voter registration records against Twitter accounts. Each Twitter user's political orientation was then estimated using the celebrity and news accounts they followed.

There is a key blind spot in the current research: rumors. Although there has been work on the broad phenomenon of rumoring online and its connection to misinformation, there is a serious need for a better understanding of how fake news stories transform into rumors and to what extent these rumors can amplify beliefs and infiltrate other communities.

Progress here might help explain one of the most curious and unexplained findings of the Grinberg et al. paper: that conservatives are significantly more inclined to share and see fake news than liberals. Perhaps this is the whole story: Conservatives have a weakness for fake news. More likely, though, is that liberals embed misinformation in different ways and spread it through means that we, as of now, do not have reliable ways of measuring. When we begin to uncover these mechanisms, it will be important to place them within the context of the much larger misinformation system within which they operate.

Here is the Grinberg et al.abstract:

The spread of fake news on social media became a public concern in the United States after the 2016 presidential election. We examined exposure to and sharing of fake news by registered voters on Twitter and found that engagement with fake news sources was extremely concentrated. Only 1% of individuals accounted for 80% of fake news source exposures, and 0.1% accounted for nearly 80% of fake news sources shared. Individuals most likely to engage with fake news sources were conservative leaning, older, and highly engaged with political news. A cluster of fake news sources shared overlapping audiences on the extreme right, but for people across the political spectrum, most political news exposure still came from mainstream media outlets.

Default mode network as seat of our ego - The entropic brain hypothesis

I want to recommend Chapter 5 of Michael Pollan's recent book "How to change your mind," on the neuroscience of the psychedelic experience, as an excellent description of the functions of the default mode network (DMN) of our brain mentioned in the previous post. Pollan points to a 2014 article by Carhart-Harris et al. (open source, which I regret not having been aware of earlier) titled "The entropic brain: a theory of conscious states informed by neuroimaging research with psychedelic drugs." The article presents evidence that the DMN is the core component of our self or ego. It's activity is reduced during the psychedelic experience, during meditation by experienced meditators, and in young children who have not yet formed strong egos, allowing the expression of a more open and naive primary kind of consciousness. This primary consciousness is more disorganized, has higher entropy. The DMN is a secondary sort of consciousness that normally inhibits this primary consciousness to enforce a stable ego and lower entropy. The Carhart-Harris et al. article is quite long and dense, so the authors try to condense their points down to a summary graphic that I though worth passing on to MindBlog readers (click to enlarge):

Legend - This schematic is intended to summarize much of what this paper has tried to communicate. It shows an “inverted u” relationship between entropy and cognition such that too high a value implies high flexibility but high disorder, whereas too low a value implies ordered but inflexible cognition. It is proposed that normal waking consciousness inhabits a position that is close to criticality but slightly sub-critical and primary states move brain activity and associated cognition toward a state of increased system entropy i.e., brain activity becomes more random and cognition becomes more flexible. It is proposed that primary states may actually be closer to criticality proper than secondary consciousness/normal waking consciousness.

Homo Prospectus - the brain as a time traveler - augmentation by A.I.?

Steve Johnson does an engaging article on the discovery and significance of the default mode network of our brains, which has been the subject of numerous MindBlog posts. This system recruits association cortices of the brain that are the last to become fully operational and our brain development continues through early adulthood, into our 20s. It is central to our internal mind wandering between past, present, and future.

...this aptitude for cognitive time travel, revealed by the discovery of the default network, may be the defining property of human intelligence. “What best distinguishes our species,” Seligman wrote in a Times Op-Ed with John Tierney, “is an ability that scientists are just beginning to appreciate: We contemplate the future.” He went on: “A more apt name for our species would be Homo prospectus, because we thrive by considering our prospects. The power of prospection is what makes us wise.”

Johnson discusses the augmentation of our future predicting by A.I. algorithms:

Accurate weather forecasting is merely one early triumph of software-based time travel: algorithms that allow us to peer into the future in ways that were impossible just a few decades ago...In machine-learning systems, algorithms can be trained to generate remarkably accurate predictions of future events by combing through vast repositories of data from past events. An algorithm might be trained to predict future mortgage defaults by analyzing thousands of home purchases and the financial profiles of the buyers, testing its hypotheses by tracking which of those buyers ultimately defaulted.

Machine-learning systems will also be immensely helpful when mulling decisions that potentially involve a large number of distinct options. Humans are remarkably adept at building imagined futures for a few competing timelines simultaneously: the one in which you take the new job, the one in which you turn it down. But our minds run up against a computational ceiling when they need to track dozens or hundreds of future trajectories. The prediction machines of A.I. do not have that limitation, which will make them tantalizingly adept at assisting with some meaningful subset of important life decisions in which there is rich training data and a high number of alternate futures to analyze.

These algorithms can help correct a critical flaw in the default network: Human beings are famously bad at thinking probabilistically. The pioneering cognitive psychologist Amos Tversky once joked that where probability is concerned, humans have three default settings: “gonna happen,” “not gonna happen” and “maybe.” We are brilliant at floating imagined scenarios and evaluating how they might make us feel, were they to happen. But distinguishing between a 20 percent chance of something happening and a 40 percent chance doesn’t come naturally to us. Algorithms can help us compensate for that cognitive blind spot.

Whether you find the idea of augmenting the default network thrilling or terrifying, one thing should be clear: These tools are headed our way. In the coming decade, many of us will draw on the forecasts of machine learning to help us muddle through all kinds of life decisions: career changes, financial planning, hiring choices. These enhancements could well turn out to be the next leap forward in the evolution of Homo prospectus, allowing us to see into the future with more acuity — and with a more nuanced sense of probability — than we can do on our own. But even in that optimistic situation, the power embedded in these new algorithms will be extraordinary, which is why Ludwig and many other members of the A.I. community have begun arguing for the creation of open-source algorithms, not unlike the open protocols of the original internet and World Wide Web. Drawing on predictive algorithms to shape important personal or civic decisions will be challenging enough without the process’s potentially being compromised or subtly redirected by the dictates of advertisers. If you thought Russian troll farms were dangerous in our social-media feeds, imagine what will happen when they infiltrate our daydreams.

TODAY, IT SEEMS, mind-wandering is under attack from all sides. It’s a common complaint that our compulsive use of smartphones is destroying our ability to focus. But seen through the lens of Homo prospectus, ubiquitous computing poses a different kind of threat: Having a network-connected supercomputer in your pocket at all times gives you too much to focus on. It cuts into your mind-wandering time. The downtime between cognitively active tasks that once led to REST states can now be filled with Instagram, or Nasdaq updates, or podcasts. We have Twitter timelines instead of time travel. At the same time, a society-wide vogue for “mindfulness” encourages us to be in the moment, to think of nothing at all instead of letting our thoughts wander. Search YouTube, and there are hundreds of meditation videos teaching you how to stop your mind from doing what it does naturally. The Homo prospectus theory suggests that, if anything, we need to carve out time in our schedule — and perhaps even in our schools — to let minds drift.

According to Marcus Raichle at Washington University, it may not be too late to repair whatever damage we may have done to our prospective powers. A few early studies suggest that the neurons implicated in the default network have genetic profiles that are often associated with long-term brain plasticity, that most treasured of neural attributes. “The brain’s default-mode network appears to preserve the capacity for plasticity into adulthood,” he told me. Plasticity, of course, is just another way of saying that the network can learn new tricks. If these new studies pan out, our mind-wandering skills will not have been locked into place in our childhood. We can get better at daydreaming, if we give ourselves the time to do it.

What will happen to our own time-traveling powers as we come to rely more on the prediction machines of A.I.? The outcome may be terrifying, or liberating, or some strange hybrid of the two. Right now it seems inevitable that A.I. will transform our prospective powers in meaningful new ways, for better or for worse. But it would be nice to think that all the technology that helped us understand the default network in the first place also ended up pushing us back to our roots: giving our minds more time to wander, to slip the surly bonds of now, to be out of the moment.

The emotional dimension of pain.

Corder et al. examine the unpleasant percept that dominates the affective dimension of pain, which is coupled with but distinct from the motivational drive to engage protective behaviors that limit exposure to noxious stimuli:

Pain is an unpleasant experience. How the brain’s affective neural circuits attribute this aversive quality to nociceptive information remains unknown. By means of time-lapse in vivo calcium imaging and neural activity manipulation in freely behaving mice encountering noxious stimuli, we identified a distinct neural ensemble in the basolateral amygdala that encodes the negative affective valence of pain. Silencing this nociceptive ensemble alleviated pain affective-motivational behaviors without altering the detection of noxious stimuli, withdrawal reflexes, anxiety, or reward. Following peripheral nerve injury, innocuous stimuli activated this nociceptive ensemble to drive dysfunctional perceptual changes associated with neuropathic pain, including pain aversion to light touch (allodynia). These results identify the amygdalar representations of noxious stimuli that are functionally required for the negative affective qualities of acute and chronic pain perception.

Social networks explain academic success and failure.

Interesting work from Stadtfeld et al.:

Significance

Understanding the factors that explain academic failure and success of university students is a core interest of educational researchers, teachers, and managers. We demonstrate how the dynamic social networks that informally evolve between students can affect their academic performance. We closely followed the emergence of multiple social networks within a cohort of 226 undergraduate university students. They were strangers to each other on their first day at university, but developed densely knit social networks through time. We show that functional studying relationships tended to evolve from informal friendship relations. In a critical examination period after one year, these networks proved to be crucial: Socially isolated students had significantly lower examination grades and were more likely to drop out of university.

Abstract

Academic success of students has been explained with a variety of individual and socioeconomic factors. Social networks that informally emerge within student communities can have an additional effect on their achievement. However, this effect of social ties is difficult to measure and quantify, because social networks are multidimensional and dynamically evolving within the educational context. We repeatedly surveyed a cohort of 226 engineering undergraduates between their first day at university and a crucial examination at the end of the academic year. We investigate how social networks emerge between previously unacquainted students and how integration in these networks explains academic success. Our study measures multiple important dimensions of social ties between students: their positive interactions, friendships, and studying relations. By using statistical models for dynamic network data, we are able to investigate the processes of social network formation in the cohort. We find that friendship ties informally evolve into studying relationships over the academic year. This process is crucial, as studying together with others, in turn, has a strong impact on students’ success at the examination. The results are robust to individual differences in socioeconomic background factors and to various indirect measures of cognitive abilities, such as prior academic achievement and being perceived as smart by other students. The findings underline the importance of understanding social network dynamics in educational settings. They call for the creation of university environments promoting the development of positive relationships in pursuit of academic success.

How exercise protects memory.

Gretchen Reynolds points to an interesting study on a mouse model for Alzheimer's disease by Lourenco et al. showing that exercise causes an increase in the level of a small protein,irisin, that boosts synaptic plasticity and memory. Here is the technical abstract:

Defective brain hormonal signaling has been associated with Alzheimer’s disease (AD), a disorder characterized by synapse and memory failure. Irisin is an exercise-induced myokine released on cleavage of the membrane-bound precursor protein fibronectin type III domain-containing protein 5 (FNDC5), also expressed in the hippocampus. Here we show that FNDC5/irisin levels are reduced in AD hippocampi and cerebrospinal fluid, and in experimental AD models. Knockdown of brain FNDC5/irisin impairs long-term potentiation and novel object recognition memory in mice. Conversely, boosting brain levels of FNDC5/irisin rescues synaptic plasticity and memory in AD mouse models. Peripheral overexpression of FNDC5/irisin rescues memory impairment, whereas blockade of either peripheral or brain FNDC5/irisin attenuates the neuroprotective actions of physical exercise on synaptic plasticity and memory in AD mice. By showing that FNDC5/irisin is an important mediator of the beneficial effects of exercise in AD models, our findings place FNDC5/irisin as a novel agent capable of opposing synapse failure and memory impairment in AD.

Can psychological scientists make the world a better place?

I want to point to the January 2019 issue of Perspectives on Psychological Science that addresses the question asked in the title of this post. It includes open source articles from more than 20 renowned psychological scientists. The issue is devoted to highlighting the ways that psychological scientists are currently applying their knowledge and skills to make the world a better place. From the introduction to the issue by Gruber et al.:

Psychological science is a multifaceted “hub science”, relevant and connected to many other disciplines. Rapid technological advances have enabled scientists to measure psychological phenomena from bodily responses invisible to the human eye through broad group behavior in large societies and then apply these findings to real-world issues to enhance human well-being and enact real-world behavioral and policy changes. Yet despite this remarkable progress, critical global issues face our society that call for immediate attention and action from psychological scientists. For example, within the past decade, we have seen escalating rates of serious and costly mental-health challenges in young adults and concurrent failure to provide mental-health treatment to those who need it the most; increases in self-reported loneliness and isolation that may compromise physical and mental health; high rates of sexual harassment and incivility toward women in the workplace and in science itself; political policy decisions that actively harm vulnerable children and their parents seeking refuge and a better life; seeming lack of concern for the welfare of many sentient nonhuman species; and rapid environmental degradation and climate change.

In the face of these and other ominous challenges, we argue that the time is ripe for our field to engage more deeply with societal issues. As a discipline that intersects with many other disciplines and with the public directly, psychological science is well positioned to contribute to cultivating a healthier, happier, and more sustainable world.

The passing of governance to corporate oligarchies serving the top 10%?

Three recent articles suggest to me a direction for our future. Bret Stephens' article describes the U.S. and Great Britain as rudderless and scarcely able to govern themselves, never mind shape world order. Several other Western democracies are facing crises in governance. Into this void steps Larry Fink (the chief of BlackRock and the world's biggest investor) whose annual letter lectures corporations that it is now their duty to look beyond profits, and contribute to society, serving a social purpose. The mega-corporations that dominate the U.S. and international capital flows are now a more stable buffer against chaos that any individual governments. BUT, ultimately who do these titans serve? Not the top 0.1%, but, as matthew stewart documents in excruciating detail, a more broad aristocracy, in America the top 9.9%. His article presents a mind-numbing list of the hundreds  of ways, both through legal and social customs, that the meritocratic class has mastered the old trick of consolidating wealth and passing privilege along at the expense of other people's children.

The bacteria in your gut reveal your true age.

Galkin et al. find that the composition of our gut microbiota can approximately reveal our age. Some microbes become more abundant with aging while others decrease. Their abstract:

The human gut microbiome is a complex ecosystem that both affects and is affected by its host status. Previous analyses of gut microflora revealed associations between specific microbes and host health and disease status, genotype and diet. Here, we developed a method of predicting the biological age of the host based on the microbiological profiles of gut microbiota using a curated dataset of 1,165 healthy individuals (1,663 microbiome samples). Our predictive model, a human microbiome clock, has an architecture of a deep neural network and achieves the accuracy of 3.94 years mean absolute error in cross-validation. The performance of the deep microbiome clock was also evaluated on several additional populations. We further introduce a platform for biological interpretation of individual microbial features used in age models, which relies on permutation feature importance and accumulated local effects. This approach has allowed us to define two lists of 95 intestinal biomarkers of human aging. We further show that this list can be reduced to 39 taxa that convey the most information on their host's aging. Overall, we show that (a) microbiological profiles can be used to predict human age; and (b) microbial features selected by models are age-related.

Upstairs/ Downstairs in our Brain - Who (or what) is running our show?

I want to pass on to MindBlog readers the lecture notes and slides from a talk I gave yesterday to "NOVA" - one of five senior learning programs hosted by the Osher Lifelong Learning Institute (OLLI) at the Univ. of Texas. The talk has the title of this post. Here is a final summary slide from the talk:

Upstairs/Downstairs - Who or what is running our show?

I.  What is happening as our “I” acts and senses in the world?

  A. Our subjective “I” is predictions that are late to sensing and acting.

  B.  What we experience is our prediction of what is out there, or what the sensory consequence of our actions will be

  C. We can place our experienced body inside or outside our actual one.

  D. The “I” or self that we experience is an illusion, a virtual avatar in our brain.

II.  What behaviors are coming from upstairs and downstairs?

   A. Downstairs dominates rapid actions and judgements.

   B. Upstairs modulates this with slower reasoned responses.

   C. Reasons and emotions cause each other.

   D. Different personality types have different upstairs profiles.

III.  What is happening in paying attention versus mind wandering?

  A. Mind wandering is a transient loss of mental autonomy.

  B. Mind wandering and default mode networks stabilize our self model. 

  C. Mind wandering facilitates creative incubation.

  D. A wandering mind can be an unhappy mind.

IV. How might we observe and influence what our brains are doing?

  A.  Attention can be trained by meditation-like activities

  B.  Attention training, like training for other skills, causes brain changes. 

  C.  Attention training can allow more autonomy in choosing actions and emotions, making us more pilot than passenger of our ship.  

Why 2018 was the best year in human history.

Nicholas Kristof provides an antidote to the doom and gloom surrounding national and international politics in his Op-Ed piece, which is essentially an update of Pinker's recent book "Enlightenment Now," which I made the subject of several MindBlog posts starting last March 1st.  News media thrive on reporting wars, massacres and famines but are less focused on progress. Meanwhile, in the background, a lot of boring good stuff is happening which is ignored by the press. Clips on what happened in 2018:

 - Each day on average, about another 295,000 people around the world gained access to electricity for the first time...another 305,000 were able to access clean drinking water for the first time...an additional 620,000 people were able to get online for the first time...86 percent of all 1-year-olds have been vaccinated against diphtheria, tetanus and pertussis

-about 4 percent of children worldwide now die by the age of 5. That’s still horrifying, but it’s down from 19 percent in 1960 and 7 percent in 2003.

 -nine out of 10 Americans say in polls that global poverty is worsening or staying the same, when in fact the most important trend in the world is arguably a huge reduction in poverty... in the early 1980s, 44 percent of the world’s population lived in extreme poverty (defined as less than about $2 a person per day). Now, fewer than 10 percent of the world’s population lives in extreme poverty, as adjusted for inflation.

Different meditation practices differently buffer from stress.

A group at the University of Wisconsin lead by my colleague Richard Davidson looks a the effects of different styles of brief contemplative practices:

Mindfulness practices are increasingly being utilized as a method for cultivating well-being. The term mindfulness is often used as an umbrella for a variety of different practices and many mindfulness-based interventions (MBIs) contain multiple styles of practice. Despite the diversity of practices within MBIs, few studies have investigated whether constituent practices produce specific effects. We randomized 156 undergraduates to one of four brief practices: breath awareness, loving-kindness, gratitude, or to an attention control condition. We assessed practice effects on affect following brief training, and effects on affect and behavior after provocation with a stressor (i.e., Cold pressor test). Results indicate that gratitude training significantly improved positive affect compared to breath awareness (d = 0.58) and loving-kindness led to significantly greater reductions in implicit negative affect compared to the control condition (d = 0.59) immediately after brief practice. In spite of gains in positive affect, the gratitude group demonstrated increased reactivity to the stressor, reporting the CPT as significantly more aversive than the control condition (d = 0.46) and showing significantly greater increases in negative affect compared to the breath awareness, loving-kindness, and control groups (ds = 0.55, 0.60, 0.65, respectively). Greater gains in implicit positive affect following gratitude training predicted decreased post-stressor likability ratings of novel neutral faces compared to breath awareness, loving-kindness, and control groups (ds = - 0.39, -0.40, -0.33, respectively) as well. Moreover, the gratitude group was significantly less likely to donate time than the loving-kindness group in an ecologically valid opportunity to provide unrewarded support. These data suggest that different styles of contemplative practice may produce different effects in the context of brief, introductory practice and these differences may be heightened by stress. Implications for the study of contemplative practices are discussed.

Does meditation provide the only way to survive our brain-dissolving technological and political environment?

Both the last chapter of Harari's "21 Lessons for the 21st Century" (abstracted in MindBlog here) and a recent Op-Ed piece by NYTimes tech columnist Farhad Manjoo suggest that the only means of maintaining sanity in the face of the overwhelmingly complex technological and political environment we face is to turn inwards -  away from all the input competing for our attention - and cultivate some insight into our internal body environments and mental practices that provide the basic foundation from which we proceed to experience our outer world...in other words, to practice some form of meditation.  For Harari meditation is:

...not an escape from reality. It is getting in touch with reality…Without the focus and clarity provided by this practice, I could not have written Sapiens or Homo Deus…Over the millennia humans have developed hundreds of meditation techniques, which differ in their principles and effectiveness….but in principle meditation is any method for the direct observation of one’s own mind…Serious meditation demands a tremendous amount of discipline…If we are willing to make efforts to understand foreign cultures, unknown species, and distant planets, it might be worth working just as hard in order to understand our own minds. And we had better understand our minds before the algorithms make our minds up for us…For a few more years or decades, we still have a choice. If we make the effort, we can still investigate who we really are. But if we want to make use of this opportunity, we had better do it now.

From Manjoo, meditation is:

...the subject of countless books, podcasts, conferences, a million-dollar app war. It’s extolled by C.E.O.s and entertainers and even taught in my kids’ elementary school (again, it’s Northern California). The fad is backed by reams of scientific research showing the benefits of mindfulness for your physical and mental health — how even short-term stints improve your attention span and your ability to focus, your memory, and other cognitive functions.

After decades of swimming in the frenetic digital waters, I found that my mind was often too scrambled to accommodate much focus. Sitting calmly, quietly and attempting to sharpen my thoughts on the present moment was excruciating...about four months ago, I brute-forced it: I made meditation part of my morning routine and made myself stick with it. I started with 10 minutes a day, then built up to 15, 20, then 30. Eventually, something clicked, and the benefits became noticeable, and then remarkable.

The best way I can describe the effect is to liken it to a software upgrade for my brain — an update designed to guard against the terrible way the online world takes over your time and your mind...Now, even without app blockers, I can stay away from mindless online haunts without worrying that I’m missing out. I can better distinguish what’s important from what’s trivial, and I’m more gracious and empathetic with others online...I hope you give it a try. I hope everyone does. (The Times’s David Gelles has written a great guide for getting started.)

The illusion of multitasking improves performance.

From Srna et al.:

With technological advancements, the desire, ability, and often necessity to multitask are pervasive. Although multitasking refers to the simultaneous execution of multiple tasks, most activities that require active attention cannot actually be done simultaneously. Therefore, whether a certain activity is considered multitasking is often a matter of perception. This article demonstrates the malleability of what people perceive as multitasking, showing that the same activity may or may not be construed as multitasking. Importantly, although engaging in multiple tasks may diminish performance, we found that, holding the activity constant, the mere perception of multitasking in fact improves performance. Across 32 studies (30 of which had performance-based incentives) containing a total of 8,242 participants, we found that individuals who perceived an activity as multitasking were more engaged and consequently outperformed those who perceived that same activity as single tasking.

Real world demonstration of how tribes determine opinions.

From Satherley et al.:

Real-world tests of the impact of partisan cues on voters are scarce because they require assessing how citizens’ attitudes changed toward an issue from before to after it became politically divisive. During the 2015–2016 New Zealand flag referendums, the leader of the (center-right) National Party and then–Prime Minister, John Key, championed changing the flag—a move strongly contested by the (center-left) Labour Party. Accordingly, we measured New Zealanders’ attitudes toward changing the flag using national longitudinal panel data collected in 2013, before the change was proposed, and again in 2016 at the height of the debate (Ns = 6,793–6,806). Registered voters who supported the National Party were more likely to shift from opposing to supporting the flag change, whereas those who supported the Labour Party were more likely to shift from supporting to opposing the change. These data demonstrate the powerful impact of partisan cues on political attitudes in a real-world setting.

People use less information than they think to make up their minds

Klein and O'Brien (open access, ) note another of our psychological biases or shortcomings. We perform Manichean good or bad characterizations with much less information than we imagine:

Significance

People readily categorize things as good or bad, a welcome adaptation that enables action and reduces information overload. The present research reveals an unforeseen consequence: People do not fully appreciate this immediacy of judgment, instead assuming that they and others will consider more information before forming conclusions than they and others actually do. This discrepancy in perceived versus actual information use reveals a general psychological bias that bears particular relevance in today’s information age. Presumably, one hopes that easy access to abundant information fosters uniformly more-informed opinions and perspectives. The present research suggests mere access is not enough: Even after paying costs to acquire and share ever-more information, people then stop short and do not incorporate it into their judgments.

Abstract

A world where information is abundant promises unprecedented opportunities for information exchange. Seven studies suggest these opportunities work better in theory than in practice: People fail to anticipate how quickly minds change, believing that they and others will evaluate more evidence before making up their minds than they and others actually do. From evaluating peers, marriage prospects, and political candidates to evaluating novel foods, goods, and services, people consume far less information than expected before deeming things good or bad. Accordingly, people acquire and share too much information in impression-formation contexts: People overvalue long-term trials, overpay for decision aids, and overwork to impress others, neglecting the speed at which conclusions will form. In today’s information age, people may intuitively believe that exchanging ever-more information will foster better-informed opinions and perspectives—but much of this information may be lost on minds long made up.

Stimulating creativity with alternating current transcranial brain stimulation

So... the actual title of the article by Di Bernardi et al. is "Right temporal alpha oscillations as a neural mechanism for inhibiting obvious associations" - but as you see from the abstract, this translates to describing a brain stimulation procedure for inhibiting habitual thinking and associations to enhance novel thinking. The trick is to induce right temporal lobe alpha (10 HZ) oscillations. I'm sure DIY kits to perform the procedure will be on the market soon. Entering 'alpha wave stimulator' in google search points to crude alpha enhancing devices that work through electrodes attached to the ears, claimed to relieve pain, control anxiety, fight depression, or treat insomnia.

Significance

“Taking a less-traveled path” is often considered an effective approach to creativity (i.e., creative thinking calls for a break from habitual thinking and associations), yet little is known about its underlying neural mechanism. In a series of four independent experiments involving electrophysiological and brain stimulation methods we provide evidence that this process is mediated by the right temporal alpha oscillations. Alpha oscillations are known to represent a process of active inhibition to suppress irrelevant information, such as inhibiting distractions during visual search. Through monitoring the brain’s electrical activity during different creativity tasks and by stimulating the right temporal brain region at the alpha frequency we show that a similar process of active inhibition is also key to creative thinking.

Abstract

Creative cognition requires mental exploration of remotely connected concepts while suppressing dominant ones. Across four experiments using different samples of participants, we provide evidence that right temporal alpha oscillations play a crucial role in inhibiting habitual thinking modes, thereby paving the way for accessing more remote ideas. In the first experiment, participants completed the compound remote associate task (RAT) in three separate sessions: during right temporal alpha (10 Hz) transcranial alternating current brain stimulation (tACS), left temporal alpha tACS, and sham tACS. Participants performed better under right tACS only on RAT items in which two of the three words shared misleading semantic associations. In the second experiment, we measured EEG while the participants solved RAT items with or without shared misleading associations. We observed an increase in right temporal alpha power when participants correctly solved RAT items with misleading semantic associations. The third experiment demonstrated that while solving divergent thinking tasks participants came up with more remote ideas when stimulated by right temporal alpha tACS. In the fourth experiment, we found that participants showed higher right temporal alpha power when generating more remote uses for common objects. These studies altogether indicate that right temporal alpha oscillations may support creativity by acting as a neural mechanism for an active inhibition of obvious semantic associations.