Welcome to the Nexus of Ethics, Psychology, Morality, Philosophy and Health Care

Welcome to the nexus of ethics, psychology, morality, technology, health care, and philosophy
Showing posts with label Information. Show all posts
Showing posts with label Information. Show all posts

Thursday, October 6, 2022

Defining Their Own Ethics, Online Creators Are De Facto Therapists for Millions—Explosive Demand & Few Safeguards

Tantum Hunter
The Washington Post
Originally posted 29 AUG 22

Here are two excerpts:

In real life, mental health information and care are sparse. In the United States, 1 in 3 counties do not have a single licensed psychologist, according to the American Psychological Association, and Americans say cost is a top barrier to seeking mental health help. On the internet, however, mental health tips are everywhere: TikTok videos with #mentalhealth in the caption have earned more than 43.9 billion views, according to the analytics company Sprout Social, and mentions of mental health on social media are increasing year by year.

The growing popularity of the subject means that creators of mental health content are filling a health-care gap. But social media apps are not designed to prioritize accurate, helpful information, critics say, just whatever content draws the biggest reaction. Young people could see their deepest struggles become fodder for advertisers and self-promoters. With no road map even for licensed professionals, mental health creators are defining their own ethics.

“I don’t want to give anyone the wrong advice,” Moloney says. “I’ve met some [followers] who’ve just started crying and saying ‘thank you’ and stuff like that. Even though it seems small, to someone else, it can have a really big impact.”

As rates of depression and anxiety spiked during the pandemic and options for accessible care dwindled, creators shared an array of content including first-person accounts of life with mental illness and videos listing symptoms of bipolar disorder. In many cases, their follower counts ballooned.

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Ideally, social media apps should be one item in a collection of mental health resources, said Jodi Miller, a researcher at Johns Hopkins University School of Education who studies the relationships among young people, technology and stress.

“Young people need evidence-based sources of information outside the internet, from parents and schools,” Miller said.

Often, those resources are unavailable. So it’s up to consumers to decide what mental health advice they put stock in, Fisher-Quann said. For her, condescending health-care providers and the warped incentives of social media platforms haven’t made that easy. But she thinks she can get better — and that her followers can, too.

“It all has to come from a place of self-awareness and desire to get better. Communities can be extremely helpful for that, but they can also be extremely harmful for that,” she said.

Friday, August 5, 2022

The Neuroscience Behind Bad Decisions

Emily Singer
Quanta Magazine
Originally posted 13 AUG 16

Here are excerpts:

Economists have spent more than 50 years cataloging irrational choices like these. Nobel Prizes have been earned; millions of copies of Freakonomics have been sold. But economists still aren’t sure why they happen. “There had been a real cottage industry in how to explain them and lots of attempts to make them go away,” said Eric Johnson, a psychologist and co-director of the Center for Decision Sciences at Columbia University. But none of the half-dozen or so explanations are clear winners, he said.

In the last 15 to 20 years [this article was written in 2016], neuroscientists have begun to peer directly into the brain in search of answers. “Knowing something about how information is represented in the brain and the computational principles of the brain helps you understand why people make decisions how they do,” said Angela Yu, a theoretical neuroscientist at the University of California, San Diego.

Glimcher is using both the brain and behavior to try to explain our irrationality. He has combined results from studies like the candy bar experiment with neuroscience data — measurements of electrical activity in the brains of animals as they make decisions — to develop a theory of how we make decisions and why that can lead to mistakes.

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But the decision-making system operates under more complex constraints and has to consider many different types of information. For example, a person might choose which house to buy depending on its location, size or style. But the relative importance of each of these factors, as well as their optimal value — city or suburbs, Victorian or modern — is fundamentally subjective. It varies from person to person and may even change for an individual depending on their stage of life. “There is not one simple, easy-to-measure mathematical quantity like redundancy that decision scientists universally agree on as being a key factor in the comparison of competing alternatives,” Yu said.

She suggests that uncertainty in how we value different options is behind some of our poor decisions. “If you’ve bought a lot of houses, you’ll evaluate houses differently than if you were a first-time homebuyer,” Yu said. “Or if your parents bought a house during the housing crisis, it may later affect how you buy a house.”

Moreover, Yu argues, the visual and decision-making systems have different end-goals. “Vision is a sensory system whose job is to recover as much information as possible from the world,” she said. “Decision-making is about trying to make a decision you’ll enjoy. I think the computational goal is not just information, it’s something more behaviorally relevant like total enjoyment.”

For many of us, the main concern over decision-making is practical — how can we make better decisions? Glimcher said that his research has helped him develop specific strategies. “Rather than pick what I hope is the best, instead I now always start by eliminating the worst element from a choice set,” he said, reducing the number of options to something manageable, like three.


Curator's note: Oddly enough, this last sentence is what personalized algorithms do.  Pushing people to limited options has both positive and negative aspects.  While it may help with decision-making, it also helps with political polarization.

Monday, April 11, 2022

Distinct neurocomputational mechanisms support informational and socially normative conformity

Mahmoodi A, Nili H, et al.
(2022) PLoS Biol 20(3): e3001565. 
https://doi.org/10.1371/journal.pbio.3001565

Abstract

A change of mind in response to social influence could be driven by informational conformity to increase accuracy, or by normative conformity to comply with social norms such as reciprocity. Disentangling the behavioural, cognitive, and neurobiological underpinnings of informational and normative conformity have proven elusive. Here, participants underwent fMRI while performing a perceptual task that involved both advice-taking and advice-giving to human and computer partners. The concurrent inclusion of 2 different social roles and 2 different social partners revealed distinct behavioural and neural markers for informational and normative conformity. Dorsal anterior cingulate cortex (dACC) BOLD response tracked informational conformity towards both human and computer but tracked normative conformity only when interacting with humans. A network of brain areas (dorsomedial prefrontal cortex (dmPFC) and temporoparietal junction (TPJ)) that tracked normative conformity increased their functional coupling with the dACC when interacting with humans. These findings enable differentiating the neural mechanisms by which different types of conformity shape social changes of mind.

Discussion

A key feature of adaptive behavioural control is our ability to change our mind as new evidence comes to light. Previous research has identified dACC as a neural substrate for changes of mind in both nonsocial situations, such as when receiving additional evidence pertaining to a previously made decision, and social situations, such as when weighing up one’s own decision against the recommendation of an advisor. However, unlike the nonsocial case, the role of dACC in social changes of mind can be driven by different, and often competing, factors that are specific to the social nature of the interaction. In particular, a social change of mind may be driven by a motivation to be correct, i.e., informational influence. Alternatively, a social change of mind may be driven by reasons unrelated to accuracy—such as social acceptance—a process called normative influence. To date, studies on the neural basis of social changes of mind have not disentangled these processes. It has therefore been unclear how the brain tracks and combines informational and normative factors.

Here, we leveraged a recently developed experimental framework that separates humans’ trial-by-trial conformity into informational and normative components to unpack the neural basis of social changes of mind. On each trial, participants first made a perceptual estimate and reported their confidence in it. In support of our task rationale, we found that, while participants’ changes of mind were affected by confidence (i.e., informational) in both human and computer settings, they were only affected by the need to reciprocate influence (i.e., normative) specifically in the human–human setting. It should be noted that participants’ perception of their partners’ accuracy is also an important factor in social change of mind (we tend to change our mind towards the more accurate participants). 

Monday, August 16, 2021

Therapist Targeted Googling: Characteristics and Consequences for the Therapeutic Relationship

Cox, K. E., Simonds, L. M., & Moulton-Perkins, A. 
(2021).  Professional Psychology: 
Research and Practice. Advance online publication. 

Abstract

Therapist-targeted googling (TTG) refers to a patient searching online to find information about their therapist. The present study investigated TTG prevalence and characteristics in a sample of adult psychotherapy clients. Participants (n = 266) who had attended at least one session with a therapist completed an anonymous online survey about TTG prevalence, motivations, and perceived impact on the therapeutic relationship. Two-thirds of the sample had conducted TTG. Those participants who were having therapy privately had worked with more than one therapist, or were having sessions more often than weekly were significantly more likely to conduct TTG; this profile was particularly common among patients who were having psychodynamic psychotherapy. Motivations included wanting to see if the therapist is qualified, curiosity, missing the therapist, and wanting to know them better. Nearly a quarter who undertook TTG thought the findings impacted the therapeutic relationship but only one in five had disclosed TTG to the therapist. TTG beyond common sense consumerism can be conceptualized as a patient’s attempt to attain closeness to the therapist but may result in impacts on trust and ability to be open. Disclosures of TTG may constitute important therapeutic material. 

Impact Statement

This study suggests that there are multiple motivations for clients searching online for information about their therapist. It highlights the need for practitioners to carefully consider the information available about them online and the importance of client searching to the therapeutic relationship.

Here is the conclusion:

In this study, most participants searched for information about their therapist. Curiosity and commonsense consumerism might explain much of this activity. We argue that there is evidence that some of this might be motivated by moments of vulnerability between sessions to regain a connection with the therapist. We also suggest that the discovery of challenging information during vulnerability might represent difficulties for the patient that are not disclosed to the therapist due to feelings of guilt and shame. Further work is needed to understand TTG, the implications on the therapeutic relationship, and how therapists work with disclosures of TTG in a way that does not provoke more shame in the patient, but which also allows therapists to effectively manage therapeutic closeness and their own vulnerability.

Friday, May 28, 2021

‘Belonging Is Stronger Than Facts’: The Age of Misinformation

Max Fisher
The New York Times
Originally published 7 May 21

Hereis an excerpt:

We are in an era of endemic misinformation — and outright disinformation. Plenty of bad actors are helping the trend along. 

But the real drivers, some experts believe, are social and psychological forces that make people prone to sharing and believing misinformation in the first place. And those forces are on the rise.

“Why are misperceptions about contentious issues in politics and science seemingly so persistent and difficult to correct?” Brendan Nyhan, a Dartmouth College political scientist, posed in a new paper in Proceedings of the National Academy of Sciences.

It’s not for want of good information, which is ubiquitous. Exposure to good information does not reliably instill accurate beliefs anyway. Rather, Dr. Nyhan writes, a growing body of evidence suggests that the ultimate culprits are “cognitive and memory limitations, directional motivations to defend or support some group identity or existing belief, and messages from other people and political elites.”

Put more simply, people become more prone to misinformation when three things happen. First, and perhaps most important, is when conditions in society make people feel a greater need for what social scientists call ingrouping — a belief that their social identity is a source of strength and superiority, and that other groups can be blamed for their problems.

As much as we like to think of ourselves as rational beings who put truth-seeking above all else, we are social animals wired for survival. In times of perceived conflict or social change, we seek security in groups. And that makes us eager to consume information, true or not, that lets us see the world as a conflict putting our righteous ingroup against a nefarious outgroup.

This need can emerge especially out of a sense of social destabilization. As a result, misinformation is often prevalent among communities that feel destabilized by unwanted change or, in the case of some minorities, powerless in the face of dominant forces.

Framing everything as a grand conflict against scheming enemies can feel enormously reassuring. And that’s why perhaps the greatest culprit of our era of misinformation may be, more than any one particular misinformer, the era-defining rise in social polarization.

“At the mass level, greater partisan divisions in social identity are generating intense hostility toward opposition partisans,” which has “seemingly increased the political system’s vulnerability to partisan misinformation,” Dr. Nyhan wrote in an earlier paper.

Wednesday, September 16, 2020

The Panopticon Is Already Here

Ross Anderson
The Atlantic
Originally published September 2020

Here is an excerpt:

China is an ideal setting for an experiment in total surveillance. Its population is extremely online. The country is home to more than 1 billion mobile phones, all chock-full of sophisticated sensors. Each one logs search-engine queries, websites visited, and mobile payments, which are ubiquitous. When I used a chip-based credit card to buy coffee in Beijing’s hip Sanlitun neighborhood, people glared as if I’d written a check.

All of these data points can be time-stamped and geo-tagged. And because a new regulation requires telecom firms to scan the face of anyone who signs up for cellphone services, phones’ data can now be attached to a specific person’s face. SenseTime, which helped build Xinjiang’s surveillance state, recently bragged that its software can identify people wearing masks. Another company, Hanwang, claims that its facial-recognition technology can recognize mask wearers 95 percent of the time. China’s personal-data harvest even reaps from citizens who lack phones. Out in the countryside, villagers line up to have their faces scanned, from multiple angles, by private firms in exchange for cookware.

Until recently, it was difficult to imagine how China could integrate all of these data into a single surveillance system, but no longer. In 2018, a cybersecurity activist hacked into a facial-recognition system that appeared to be connected to the government and was synthesizing a surprising combination of data streams. The system was capable of detecting Uighurs by their ethnic features, and it could tell whether people’s eyes or mouth were open, whether they were smiling, whether they had a beard, and whether they were wearing sunglasses. It logged the date, time, and serial numbers—all traceable to individual users—of Wi-Fi-enabled phones that passed within its reach. It was hosted by Alibaba and made reference to City Brain, an AI-powered software platform that China’s government has tasked the company with building.

City Brain is, as the name suggests, a kind of automated nerve center, capable of synthesizing data streams from a multitude of sensors distributed throughout an urban environment. Many of its proposed uses are benign technocratic functions. Its algorithms could, for instance, count people and cars, to help with red-light timing and subway-line planning. Data from sensor-laden trash cans could make waste pickup more timely and efficient.

The info is here.

Thursday, May 14, 2020

Is justice blind or myopic? An examination of the effects of meta-cognitive myopia and truth bias on mock jurors and judges

M. Pantazi, O. Klein, & M. Kissine
Judgment and Decision Making, 
Vol. 15, No. 2, March 2020, pp. 214-229

Abstract

Previous studies have shown that people are truth-biased in that they tend to believe the information they receive, even if it is clearly flagged as false. The truth bias has been recently proposed to be an instance of meta-cognitive myopia, that is, of a generalized human insensitivity towards the quality and correctness of the information available in the environment. In two studies we tested whether meta-cognitive myopia and the ensuing truth bias may operate in a courtroom setting. Based on a well-established paradigm in the truth-bias literature, we asked mock jurors (Study 1) and professional judges (Study 2) to read two crime reports containing aggravating or mitigating information that was explicitly flagged as false. Our findings suggest that jurors and judges are truth-biased, as their decisions and memory about the cases were affected by the false information. We discuss the implications of the potential operation of the truth bias in the courtroom, in the light of the literature on inadmissible and discredible evidence, and make some policy suggestions.

From the Discussion:

Fortunately, the judiciary system is to some extent shielded by intrusions of illegitimate evidence, since objections are most often raised before a witness’s answer or piece of evidence is presented in court. Therefore, most of the time, inadmissible or false evidence is prevented from entering the fact-finders’ mental representations of a case in the first place. Nevertheless, objections can also be raised after a witnesses’ response has been given. Such objections may not actually protect the fact-finders from the information that has already been presented. An important question that remains open from a policy perspective is therefore how we are to safeguard the rules of evidence, given the fact-finders’ inability to take such meta-information into account.

The research is here.

Thursday, June 27, 2019

This doctor is recruiting an army of medical experts to drown out fake health news on Instagram and Twitter

Christine Farr
CNBC.com
Originally published June 2, 2019

The antidote to fake health news? According to Austin Chiang, the first chief medical social media officer at a top hospital, it’s to drown out untrustworthy content with tweets, pics and posts from medical experts that the average American can relate to.

Chiang is a Harvard-trained gastroenterologist with a side passion for social media. On Instagram, where he refers to himself as a “GI Doctor,” he has 20,000 followers, making him one of the most influential docs aside from TV personalities, plastic surgeons and New York’s so-called “most eligible bachelor,” Dr. Mike.

Every few days, he’ll share a selfie or a photo of himself in scrubs along with captions about the latest research or insights from conferences he attends, or advice to patients trying to sort our real information from rumors. He’s also active on Twitter, Microsoft’s LinkedIn and Facebook (which owns Instagram).

But Chiang recognizes that his following pales in comparison to accounts like “Medical Medium,” where two million people tune in to the musings of a psychic, who raves about vegetables that will cure diseases ranging from depression to diabetes. (Gwyneth Paltrow’s Goop has written about the account’s creator glowingly.) Or on Pinterest and Facebook, where anti-vaccination content has been far more prominent than legitimate public health information. Meanwhile, on e-commerce sites like Amazon and eBay, vendors have hawked unproven and dangerous health “cures, ” including an industrial-strength bleach that is billed as eliminating autism in children.

The info is here.

Sunday, March 24, 2019

An Ethical Obligation for Bioethicists to Utilize Social Media

Herron, PD
Hastings Cent Rep. 2019 Jan;49(1):39-40.
doi: 10.1002/hast.978.

Here is an excerpt:

Unfortunately, it appears that bioethicists are no better informed than other health professionals, policy experts, or (even) elected officials, and they are sometimes resistant to becoming informed. But bioethicists have a duty to develop our knowledge and usefulness with respect to social media; many of our skills can and should be adapted to this area. There is growing evidence of the power of social media to foster dissemination of misinformation. The harms associated with misinformation or “fake news” are not new threats. Historically, there have always been individuals or organized efforts to propagate false information or to deceive others. Social media and other technologies have provided the ability to rapidly and expansively share both information and misinformation. Bioethics serves society by offering guidance about ethical issues associated with advances in medicine, science, and technology. Much of the public’s conversation about and exposure to these emerging issues occurs online. If we bioethicists are not part of the mix, we risk yielding to alternative and less authoritative sources of information. Social media’s transformative impact has led some to view it as not just a personal tool but the equivalent to a public utility, which, as such, should be publicly regulated. Bioethicists can also play a significant part in this dialogue. But to do so, we need to engage with social media. We need to ensure that our understanding of social media is based on experiential use, not just abstract theory.

Bioethics has expanded over the past few decades, extending beyond the academy to include, for example, clinical ethics consultants and leadership positions in public affairs and public health policy. These varied roles bring weighty responsibilities and impose a need for critical reflection on how bioethicists can best serve the public interest in a way that reflects and is accountable to the public’s needs.

Monday, February 11, 2019

Escape the echo chamber

By C Thi Nguyen
aeon.co
Originally posted April 9, 2018

Here is an excerpt:

Epistemic bubbles also threaten us with a second danger: excessive self-confidence. In a bubble, we will encounter exaggerated amounts of agreement and suppressed levels of disagreement. We’re vulnerable because, in general, we actually have very good reason to pay attention to whether other people agree or disagree with us. Looking to others for corroboration is a basic method for checking whether one has reasoned well or badly. This is why we might do our homework in study groups, and have different laboratories repeat experiments. But not all forms of corroboration are meaningful. Ludwig Wittgenstein says: imagine looking through a stack of identical newspapers and treating each next newspaper headline as yet another reason to increase your confidence. This is obviously a mistake. The fact that The New York Times reports something is a reason to believe it, but any extra copies of The New York Times that you encounter shouldn’t add any extra evidence.

But outright copies aren’t the only problem here. Suppose that I believe that the Paleo diet is the greatest diet of all time. I assemble a Facebook group called ‘Great Health Facts!’ and fill it only with people who already believe that Paleo is the best diet. The fact that everybody in that group agrees with me about Paleo shouldn’t increase my confidence level one bit. They’re not mere copies – they actually might have reached their conclusions independently – but their agreement can be entirely explained by my method of selection. The group’s unanimity is simply an echo of my selection criterion. It’s easy to forget how carefully pre-screened the members are, how epistemically groomed social media circles might be.

The information is here.

Saturday, January 26, 2019

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

Nadav Klein and Ed O’Brien
PNAS December 26, 2018 115 (52) 13222-13227

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.

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.

Wednesday, January 16, 2019

What Is the Right to Privacy?

Andrei Marmor
(2015) Philosophy & Public Affairs, 43, 1, pp 3-26

The right to privacy is a curious kind of right. Most people think that we have a general right to privacy. But when you look at the kind of issues that lawyers and philosophers label as concerns about privacy, you see widely differing views about the scope of the right and the kind of cases that fall under its purview.1 Consequently, it has become difficult to articulate the underlying interest that the right to privacy is there to protect—so much so that some philosophers have come to doubt that there is any underlying interest protected by it. According to Judith Thomson, for example, privacy is a cluster of derivative rights, some of them derived from rights to own or use your property, others from the right to your person or your right to decide what to do with your body, and so on. Thomson’s position starts from a sound observation, and I will begin by explaining why. The conclusion I will reach, however, is very different. I will argue that there is a general right to privacy grounded in people’s interest in having a reasonable measure of control over the ways in which they can present themselves (and what is theirs) to others. I will strive to show that this underlying interest justifies the right to privacy and explains its proper scope, though the scope of the right might be narrower, and fuzzier in its boundaries, than is commonly understood.

The info is here.

Saturday, November 17, 2018

The New Age of Patient Autonomy: Implications for the Patient-Physician Relationship

Madison Kilbride and Steven Joffe
JAMA. Published online October 15, 2018.

Here is an excerpt:

The New Age of Patient Autonomy

The abandonment of strong medical paternalism led scholars to explore alternative models of the patient-physician relationship that emphasize patient choice. Shared decision making gained traction in the 1980s and remains the preferred model for health care interactions. Broadly, shared decision making involves the physician and patient working together to make medical decisions that accord with the patient’s values and preferences. Ideally, for many decisions, the physician and patient engage in an informational volley—the physician provides information about the range of options, and the patient expresses his or her values and preferences. In some cases, the physician may need to help the patient identify or clarify his or her values and goals of care in light of the available treatment options.

Although there is general consensus that patients should participate in and ultimately make their own medical decisions whenever possible, most versions of shared decision making take for granted that the physician has access to knowledge, understanding, and medical resources that the patient lacks. As such, the shift from medical paternalism to patient autonomy did not wholly transform the physician’s role in the therapeutic relationship.

In recent years, however, widespread access to the internet and social media has reduced physicians’ dominion over medical information and, increasingly, over patients’ access to medical products and services. It is no longer the case that patients simply visit their physicians, describe their symptoms, and wait for the differential diagnosis. Today, some patients arrive at the physician’s office having thoroughly researched their symptoms and identified possible diagnoses. Indeed, some patients who have lived with rare diseases may even know more about their conditions than some of the physicians with whom they consult.

The info is here.

Wednesday, May 16, 2018

Escape the Echo Chamber

C Thi Nguyen
www.medium.com
Originally posted April 12, 2018

Something has gone wrong with the flow of information. It’s not just that different people are drawing subtly different conclusions from the same evidence. It seems like different intellectual communities no longer share basic foundational beliefs. Maybe nobody cares about the truth anymore, as some have started to worry. Maybe political allegiance has replaced basic reasoning skills. Maybe we’ve all become trapped in echo chambers of our own making — wrapping ourselves in an intellectually impenetrable layer of likeminded friends and web pages and social media feeds.

But there are two very different phenomena at play here, each of which subvert the flow of information in very distinct ways. Let’s call them echo chambers and epistemic bubbles. Both are social structures that systematically exclude sources of information. Both exaggerate their members’ confidence in their beliefs. But they work in entirely different ways, and they require very different modes of intervention. An epistemic bubble is when you don’t hear people from the other side. An echo chamber is what happens when you don’t trustpeople from the other side.

Current usage has blurred this crucial distinction, so let me introduce a somewhat artificial taxonomy. An ‘epistemic bubble’ is an informational network from which relevant voices have been excluded by omission. That omission might be purposeful: we might be selectively avoiding contact with contrary views because, say, they make us uncomfortable. As social scientists tell us, we like to engage in selective exposure, seeking out information that confirms our own worldview. But that omission can also be entirely inadvertent. Even if we’re not actively trying to avoid disagreement, our Facebook friends tend to share our views and interests. When we take networks built for social reasons and start using them as our information feeds, we tend to miss out on contrary views and run into exaggerated degrees of agreement.

The information is here.

Wednesday, April 4, 2018

Simple moral code supports cooperation

Charles Efferson & Ernst Fehr
Nature
Originally posted March 7, 2018

The evolution of cooperation hinges on the benefits of cooperation being shared among those who cooperate. In a paper in Nature, Santos et al. investigate the evolution of cooperation using computer-based modelling analyses, and they identify a rule for moral judgements that provides an especially powerful system to drive cooperation.

Cooperation can be defined as a behaviour that is costly to the individual providing help, but which provides a greater overall societal benefit. For example, if Angela has a sandwich that is of greater value to Emmanuel than to her, Angela can increase total societal welfare by giving her sandwich to Emmanuel. This requires sacrifice on her part if she likes sandwiches. Reciprocity offers a way for benefactors to avoid helping uncooperative individuals in such situations. If Angela knows Emmanuel is cooperative because she and Emmanuel have interacted before, her reciprocity is direct. If she has heard from others that Emmanuel is a cooperative person, her reciprocity is indirect — a mechanism of particular relevance to human societies.

A strategy is a rule that a donor uses to decide whether or not to cooperate, and the evolution of reciprocal strategies that support cooperation depends crucially on the amount of information that individuals process. Santos and colleagues develop a model to assess the evolution of cooperation through indirect reciprocity. The individuals in their model can consider a relatively large amount of information compared with that used in previous studies.

The review is here.

Monday, March 26, 2018

Non cogito, ergo sum

Ian Leslie
The Economist
Originally published May/June 2012

Here is an excerpt:

Researchers from Columbia Business School, New York, conducted an experiment in which people were asked to predict outcomes across a range of fields, from politics to the weather to the winner of “American Idol”. They found that those who placed high trust in their feelings made better predictions than those who didn’t. The result only applied, however, when the participants had some prior knowledge.

This last point is vital. Unthinking is not the same as ignorance; you can’t unthink if you haven’t already thought. Djokovic was able to pull off his wonder shot because he had played a thousand variations on it in previous matches and practice; Dylan’s lyrical outpourings drew on his immersion in folk songs, French poetry and American legends. The unconscious minds of great artists and sportsmen are like dense rainforests, which send up spores of inspiration.

The higher the stakes, the more overthinking is a problem. Ed Smith, a cricketer and author of “Luck”, uses the analogy of walking along a kerbstone: easy enough, but what if there was a hundred-foot drop to the street—every step would be a trial. In high-performance fields it’s the older and more successful performers who are most prone to choke, because expectation is piled upon them. An opera singer launching into an aria at La Scala cannot afford to think how her technique might be improved. When Federer plays a match point these days, he may feel as if he’s standing on the cliff edge of his reputation.

The article is here.

Tuesday, February 20, 2018

This Cat Sensed Death. What if Computers Could, Too?

Siddhartha Mukherjee
The New York Times
Originally published January 3, 2017

Here are two excerpts:

But what if an algorithm could predict death? In late 2016 a graduate student named Anand Avati at Stanford’s computer-science department, along with a small team from the medical school, tried to “teach” an algorithm to identify patients who were very likely to die within a defined time window. “The palliative-care team at the hospital had a challenge,” Avati told me. “How could we find patients who are within three to 12 months of dying?” This window was “the sweet spot of palliative care.” A lead time longer than 12 months can strain limited resources unnecessarily, providing too much, too soon; in contrast, if death came less than three months after the prediction, there would be no real preparatory time for dying — too little, too late. Identifying patients in the narrow, optimal time period, Avati knew, would allow doctors to use medical interventions more appropriately and more humanely. And if the algorithm worked, palliative-care teams would be relieved from having to manually scour charts, hunting for those most likely to benefit.

(cut)

So what, exactly, did the algorithm “learn” about the process of dying? And what, in turn, can it teach oncologists? Here is the strange rub of such a deep learning system: It learns, but it cannot tell us why it has learned; it assigns probabilities, but it cannot easily express the reasoning behind the assignment. Like a child who learns to ride a bicycle by trial and error and, asked to articulate the rules that enable bicycle riding, simply shrugs her shoulders and sails away, the algorithm looks vacantly at us when we ask, “Why?” It is, like death, another black box.

The article is here.

Saturday, February 17, 2018

Fantasy and Dread: The Demand for Information and the Consumption Utility of the Future

Ananda R. Ganguly and Joshua Tasoff
Management Science
Last revised: 1 Jun 2016

Abstract

We present evidence that intrinsic demand for information about the future is increasing in expected future consumption utility. In the first experiment, subjects may resolve a lottery now or later. The information is useless for decision making but the larger the reward, the more likely subjects are to pay to resolve the lottery early. In the second experiment subjects may pay to avoid being tested for HSV-1 and the more highly feared HSV-2. Subjects are three times more likely to avoid testing for HSV-2, suggesting that more aversive outcomes lead to more information avoidance. In a third experiment, subjects make choices about when to get tested for a fictional disease. Some subjects behave in a way consistent with expected utility theory and others exhibit greater delay of information for more severe diseases. We also find that information choice is correlated with positive affect, ambiguity aversion, and time preference as some theories predict.

The research is here.

Wednesday, December 27, 2017

The Desirability of Storytellers

Ed Young
The Atlantic
Originally posted December 5, 2017

Here are several excerpts:

Storytelling is a universal human trait. It emerges spontaneously in childhood, and exists in all cultures thus far studied. It’s also ancient: Some specific stories have roots that stretch back for around 6,000 years. As I’ve written before, these tales aren’t quite as old as time, but perhaps as old as wheels and writing. Because of its antiquity and ubiquity, some scholars have portrayed storytelling as an important human adaptation—and that’s certainly how Migliano sees it. Among the Agta, her team found evidence that stories—and the very act of storytelling—arose partly as a way of cementing social bonds, and instilling an ethic of cooperation.

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In fact, the Agta seemed to value storytelling above all else. Good storytellers were twice as likely to be named as ideal living companions as more pedestrian tale spinners, and storytelling acumen mattered far more all the other skills. “It was highly valued, twice as much as being a good hunter,” says Migliano. “We were puzzled.”

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Skilled Agta storytellers are more likely to receive gifts, and they’re not only more desirable as living companions—but also as mates. On average, they have 0.5 more children than their peers. That’s a crucial result. Stories might help to knit communities together, but evolution doesn’t operate for the good of the group. If storytelling is truly an adaptation, as Migliano suggests, it has to benefit individuals who are good at it—and it clearly does.

“It’s often said that telling stories, and other cultural practices such as singing and dancing, help group cooperation, but real-world tests of this idea are not common,” says Michael Chwe, a political scientist at the University of California, Los Angeles, who studies human cooperation. “The team’s attempt to do this is admirable.”

The article is here.

Tuesday, October 31, 2017

Does Your Gut Always Steer You Right?

Elizabeth Bernstein
The Wall Street Journal
Originally published October 9, 2017

Here is an excerpt:

When should you trust your gut? Consult your gut for complex decisions.

These include important, but not life-or-death, choices such as what car to buy, where to move, which job offer to accept. Your conscious mind will have too much information to sort through, and there may not be one clear choice. For example, there’s a lot to consider when deciding on a new home: neighborhood (Close to work but not as fun? Farther away but nicer?), price, type of home (Condo or house?). Research shows that when people are given four choices of which car to buy or which apartment to rent—with slightly different characteristics to each—and then are distracted from consciously thinking about their decision, they make better choices. “Our conscious mind is not very good at having all these choices going on at once,” says Dr. Bargh. “When you let your mind work on this without paying conscious attention, you make a better decision.”

Using unconscious and conscious thought to make a decision is often best. And conscious thought should come first. An excellent way to do this is to make a list of the benefits and drawbacks of each choice you could make. We are trained in rational decision-making, so this will satisfy your conscious mind. And sometimes the list will be enough to show you a clear decision.

But if it isn’t, put it away and do something that absorbs your conscious mind. Go for a hike or run, walk on the beach, play chess, practice a musical instrument. (No vegging out in front of the TV; that’s too mind-numbing, experts say.) “Go into yourself without distractions from the outside, and your unconscious will keep working on the problem,” says Emeran Mayer, a gastroenterologist and neuroscientist and the author of “The Mind-Gut Connection” and a professor at UCLA’s David Geffen School of Medicine.

If the stakes are high, try to think rationally

Even if time is tight. For example, if your gut tells you to jump in front of a train to help someone who just fell on the tracks, that might be worth risking your life. If it’s telling you to jump in front of that train because you dropped your purse, it’s not. Your rational mind, not your gut, will know the difference, Dr. Bargh says.

The article is here.

Note: As usual, I don't agree with everything in this article.