Economists & Ideological Bias: Are critics of conventional views better economists or even better persons? Remembering Krugman's The Conscience of a Liberal.

Mohsen Javdani & Ha-Joon Chang, Who Said or What Said? Estimating Ideological Bias in Views Among Economists (August 1, 2019). SSRN: http://dx.doi.org/10.2139/ssrn.3356309

Abstract: There exists a long-standing debate about the influence of ideology in economics. Surprisingly, however, there is no concrete empirical evidence to examine this critical issue. Using an online randomized controlled experiment involving economists in 19 countries, we examine the effect of ideological bias on views among economists. Participants were asked to evaluate statements from prominent economists on different topics, while source attribution for each statement was randomized without participants’ knowledge. For each statement, participants either received a mainstream source, an ideologically different less-/non-mainstream source, or no source. We find that changing source attributions from mainstream to less-/non-mainstream, or removing them, significantly reduces economists’ reported agreement with statements. This contradicts the image economists have of themselves, with 82% of participants reporting that in evaluating a statement one should only pay attention to its content. Using a framework of Bayesian updating we examine two competing hypotheses as potential explanations for these results: unbiased Bayesian updating versus ideologically-/authority-biased Bayesian updating. While we find no evidence in support of unbiased updating, our results are consistent with biased Bayesian updating. More specifically, we find that changing/removing sources (1) has no impact on economists’ reported confidence with their evaluations; (2) similarly affects experts/non-experts in relevant areas; and (3) has substantially different impacts on economists with different political orientations. Finally, we find significant heterogeneity in our results by gender, country, PhD completion country, research area, and undergraduate major, with patterns consistent with the existence of ideological bias.

Keywords: ideology, ideological bias, authority bias, Bayesian updating, views among economists
JEL Classification: A11, A14

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5.4.2. Heterogeneity by Gender
[...]. In addition, we find that the estimated ideological bias is 44% larger among male economists as compared to their female counterparts (24% of a standard deviation reduction in agreement level versus 14%, respectively), a difference that is statistically significant at 0.1%. These results are consistent with studies from psychology which suggest that women exhibit less confirmation bias than men (Meyers-Levy 1986, Bar-Tal and Jarymowicz 2010). Gordon and Dahl (2013) also find evidence that suggests that male economists are less cautious in expressing an opinion. This seems to be consistent with stronger ideological bias among male economists found in our results, since ideological bias and assigning higher levels of certainly to our own views usually work hand in hand. Finally, these results are consistent with van Dalen (2019) who finds that female economists are more likely to believe that economic research is not affected by one’s political views, perhaps because they more strongly aspire to be less ideologically biased.


Just a few quick low-quality comments/reminders:

0  First of all, Lee C Bollinger: The Idea of a University. The Wall Street Journal, October 15, 2003, http://online.wsj.com/article/0,,SB106617939829836100,00.html

[...] universities at their best have nurtured a distinctive intellectual atmosphere in which one is forced to live in a world of seemingly infinite complexity, while holding onto the natural but quixotic hope that someday it all will be resolved. If the pursuit of understanding is your mission, you simply cannot avoid confronting the immense variety of perspectives out there and, ultimately, how much we don't know, our sheer ignorance. You cannot rely on the comforts of common sense and of having a point of view. Learning to live comfortably in this very uncomfortable mental environment, with all its confusions and disorder and possibilities, defines the intellectual character of the modern university. 

And this has great significance for shaping the intellectual and emotional character of open, democratic societies. Just as instilling an entrepreneurial spirit is difficult and takes time, so does the creation of a democratic personality. The instinctive impulse in the marketplace of ideas is to stick with what we think we know, to find others who think similarly so we can mutually reassure ourselves of the correctness of our beliefs, to avoid situations where we might have to justify our ideas and to resort more and more to certitude as the best defense when under attack. These impulses, natural as they may be, are of course devastating to society. With all the pressures toward the closing of our minds that come with conflict in the public arena, it's not a bad idea to have special communities like universities distinctly dedicated to the open intellect.

1  Care must be taken with some of the writing... We see at the beginning "We find that the estimated ideological bias among female economists is around 40 percent less than their male counterparts" and later the different formulation and figures "the estimated ideological bias is 44% larger among male economists as compared to their female counterparts." Several times they make two uses of some comments, and there are substantial, IMHO, differences among those invocations.

As Tyler Cowen says, "It is a wordy and poorly written paper, and they don't consider the possibility that deference to authority perhaps is the rational Bayesian move, not the contrary.  Still, it has numerous results of interest." (Sep 5 2019, https://marginalrevolution.com/marginalrevolution/2019/09/ideological-bias-and-argument-from-authority-among-economists.html).

2  It says that "there already exists strong evidence that, compared to various other disciplines, students in economics stand out in terms of views associated with greed, corruption, selfishness, and willingness to free-ride," and a note adds to this that "Even if this relationship is not strictly casual, it suggests that there exists something about economic education that leads to a disproportionate self-selection of such students into economics."

All this goes mainly for the boys (see section 3 below). It adds nothing about possible (or lack of) better insights, better theories, more economic geniuses among the greedy, corrupt, selfish, or free-riders, and many other possible ideas to be explored. We are left with the doubt that maybe they are as they say, but that makes them better economists, maybe this makes them better at computing while modeling, maybe they see better the economic agents' motivations, aspirations, etc. But they are not interested in going deeper, only in correcting the bad traits, bad habits, etc.

3  If anyone thinks it is a good thing to believe "that economic research is not affected by one’s political views," they are wrong; and that belief and that wish do not make the girls better economists.


4  I think that it transmits biased information, besides its being hilarious, to make mention of Dani Rodrik saying this:

"there are powerful forces having to do with the sociology of the profession and the socialization process that tend to push economists to think alike. Most economists start graduate school not having spent much time thinking about social problems or having studied much else besides math and  economics. The incentive and hierarchy systems tend to reward those with the technical skills rather than interesting questions or research agendas. An in-group versus out-group mentality develops rather early on that pits economists against other social scientists."

or Joseph Stiglitz's pearl:

"[economics as taught] in America’s graduate schools … bears testimony to a triumph of ideology over science."

, as if they were less biased than the others, or were not part of powerful forces of good intentions, or we could ask them to re-organize economics teaching in America, or biases and group think are worse now than when they were students, or ideology trumping science were now a bigger problem than time ago.

They are as bad as we all, and it is likely that worse than many, since they succumb to the feeling-good double pressure in greater degree than the truly modest learners: the pressure of having a good image outside themselves (reputation of being compassionate, economists with a heart) and the pressure of having a good internal reputation, so to speak (good image of oneself).

The pontifex himself, P Krugman, author of The Conscience of a Liberal, said:

On election night 2016, I gave in temporarily to a temptation I warn others about: I let my political feelings distort my economic judgment. A very bad man had just won the Electoral College; and my first thought was that this would translate quickly into a bad economy. I quickly retracted the claim, and issued a mea culpa. (Being an old-fashioned guy, I try to admit and learn from my mistakes.) [Can the Economy Keep Calm and Carry On? Paul Krugman. The New York Times, Jan 01 2018, https://www.nytimes.com/2018/01/01/opinion/can-the-economy-keep-calm-and-carry-on.html]

Being he, it happened only that day and it was temporary. But we the great unwashed sin frequently and, being not old-fashioned guys, we do not "try to admit and learn from" our mistakes, and are "testimony to a triumph of ideology over science."

Fortunately for us, Messrs. Javdani & Chang mentioned those three economists, three that are less of a role model than others much more modest and conscious of their human limitations.

Illusion of Knowledge through Facebook News? Effects of Snack News in a News Feed on Perceived Knowledge, Attitude Strength, and Willingness for Discussions

Illusion of Knowledge through Facebook News? Effects of Snack News in a News Feed on Perceived Knowledge, Attitude Strength, and Willingness for Discussions. Svenja Schäfer. Computers in Human Behavior, September 4 2019. https://doi.org/10.1016/j.chb.2019.08.031

Highlights
•    Many news posts make people feel more knowledgeable than they are
•    Only knowledge perception (not actual knowledge) is related to attitudes and behavior
•    Many news posts indirectly affect attitudes and behavior through perceived knowledge
•    News articles improve both actual knowledge and knowledge assessment

Abstract: Research indicates that using social network sites as a source for news increases perceived knowledge even if, objectively, people fail to acquire knowledge. This might result from the frequent repetition of topics in news posts caused by multiple news outlets posting about the same news topics and the algorithm that favors similar postings. These repeated encounters can have a positive effect on the perception of knowing more, even if actual learning hardly occurs. An experiment (N=810, representative of German Internet users) tested these assumptions. Participants were assigned to one of four groups and received a news feed with no information, few news posts, many news posts, or a full-length news article. Results indicate that the reception of many news posts increased perceived knowledge that is not paralleled by a gain in factual knowledge. Perceived knowledge mediates effects of reading many news posts on more extreme attitudes and the willingness for discussions. Even if participants who read the news article gained factual knowledge, they did not feel more knowledgeable than participants who were exposed to a news feed containing news posts. The results emphasize the meaning of engaging with full news articles, both for learning facts and for more accurate knowledge assessments.

Generalized anxiety: Most psychological and self-help interventions exerted greater effects than the waitlist group, but no psychological interventions had greater effects compared with the psychological placebo

Pharmacological and psychological interventions for generalized anxiety disorder in adults: A network meta-analysis. Ting-Ren Chen et al. Journal of Psychiatric Research, September 1 2019. https://doi.org/10.1016/j.jpsychires.2019.08.014

Abstract: Generalized anxiety disorder (GAD) is a significant and common mental illness with a lifetime prevalence of 3.7%. Regardless of the complexity of treatment decisions for GAD, few studies have conducted systematic comparisons of the efficacies of varying interventions. Thus, this study performed a valid network meta-analysis (NMA) of randomized controlled trials (RCTs) to synthesize direct and indirect evidence for alternative interventions for GAD. We searched four major bibliographic databases, the Cochrane Central Register of Controlled Trials, Embase, PsycINFO, and PubMed, for published RCTs of adult patients with a diagnosis of GAD and allowed for all comorbidities. A total of 91 articles (14,812 participants) were identified in the final NMA. The results showed that all pharmacological treatments except for serotonin modulators and second-generation antipsychotics had greater effects than placebo: norepinephrine–dopamine reuptake inhibitors (standardized mean difference (SMD) −1.84, 95% credible interval −3.05 to −0.62), noradrenergic and specific serotonergic antidepressants (−0.91, −1.62 to −0.20), melatonergic receptor agonists (−0.68, −1.15 to −0.21), selective serotonin reuptake inhibitors (SSRIs; −0.67, −0.90 to −0.43), azapirones (−0.58, −1.00 to −0.17), anticonvulsants (−0.56, −0.85 to −0.28), serotonin–norepinephrine reuptake inhibitors (SNRIs; −0.54, −0.79 to −0.30), and benzodiazepines (BZDs; −0.40, −0.65 to −0.15). Most psychological and self-help interventions exerted greater effects than the waitlist group. However, no psychological interventions had greater effects compared with the psychological placebo. Overall, most pharmacological interventions had larger effect sizes than psychological interventions, and most psychological interventions showed larger effect sizes than self-help interventions.


Check also An analysis of psychotherapy versus placebo studies. Leslie Prioleau, Martha Murdock and Nathan Brody. Behavioral and Brain Sciences, Volume 6 Issue 2, June 1983 , pp. 275-285. https://doi.org/10.1017/S0140525X00015867

Abstract: Smith, Glass, and Miller (1980) have reported a meta-analysis of over 500 studies comparing some form of psychological therapy with a control condition. They report that when averaged over all dependent measures of outcome, psychological therapy is. 85 standard deviations better than the control treatment. We examined the subset of studies included in the Smith et al. metaanalysis that contained a psychotherapy and a placebo treatment. The median of the mean effect sizes for these 32 studies was. 15. There was a nonsignificant inverse relationship between mean outcome and the following: sample size, duration of therapy, use of measures of outcome other than undisguised self-report, measurement of outcome at follow-up, and use of real patients rather than subjects solicited for the purposes of participation in a research study. A qualitative analysis of the studies in terms of the type of patient involved indicates that those using psychiatric outpatients had essentially zero effect sizes and that none using psychiatric inpaticnts provide convincing evidence for psychotherapeutic effectiveness. The onty studies clearly demonstrating significant effects of psychotherapy were the ones that did not use real patients. For the most part, these studies involved small samples of subjects and brief treatments, occasionally described in quasibeliavioristic language. It was concluded that for real patients there is no evidence that the benefits of psychotherapy are greater than those of placebo treatment.

China's Vice Premier: "We must strengthen the guidance and management of public opinion."

China's Vice Premier: Pork Shortages Must Not Spoil the Party. Dim Sums blog, Sep 2 2019. https://dimsums.blogspot.com/2019/09/vice-premier-pork-shortages-must-not.html

Excerpts of blog:

Chinese officials are worried that a 10-million-ton pork shortage could spoil upcoming communist party celebrations, according to a transcript of a speech ordering local officials to bolster pork supplies. In fact, the speech's instructions to "manage public opinion" and constant shifting of priorities of the communist regime suggest the celebrations may ring hollow anyway.

As the country's year-old African swine fever epidemic began to send pork prices into the stratosphere this summer, the government's rhetoric gradually shifted from admonitions to stop the spread of the disease to pronouncements that the disease is "under control" and commands to restore "normal" production and trade. On August 20-21, Premier Li Keqiang visited food markets and chaired a State Council meeting that adopted "more detailed policies and an attitude of urgency" to cope with the pork supply crisis.

On August 22, Vice Premier Hu Chunhua told communist party officials to prioritize the rebuilding of pork production capacity and preservation of pork supplies as an important "political task." The full transcript posted on a pork industry site warned officials that widespread pork shortages could occur during the upcoming moon festival, National day, New Year, and spring festival holidays if they fail to take measures. Shortages would affect the "happy and peaceful atmosphere" during the upcoming 70th anniversary of the Peoples Republic, the vice premier said. Furthermore, Hu warned that a gaping hole in the pork supply and unaffordable pork for low-income people would impair the image of the communist party in 2020 when the "well-off society" is scheduled to be achieved.

Most Chinese news media posted only the 3-paragraph summary of the Vice Premier's remarks that omits these admonitions. The full transcript--apparently an internal communication addressed to "comrades"--was posted only on social media. The full transcript is a surprisingly candid assessment of problems and shortcomings in the pork sector that are kept hidden in documents for the public.

Vice Premier Hu's remarks included a number of items that rarely appear in government-approved documents for public consumption:

    The ASF virus is now endemic in China (在我国定植).
    According to Hu, unannounced investigations found large numbers of dead pigs where no disease had been reported, indicating that the actual number of ASF cases exceeds the number reported.
    Hu acknowledged that China's pork supply situation will be "extremely severe" during the 4th quarter of this year and first half of 2020
    The Chinese government estimates that the country will have a 10-million-metric-ton deficit in pork supply this year.
    Premier Hu said the projected 10-mmt deficit exceeds the amount of pork traded in international markets.
    Monthly estimates of swine inventories by the Ministry of Agriculture and Rural Affairs are based on monitoring of 4000 pig-raising villages and 13,000 scaled-up farms.
    With its short production cycle, poultry will be the main substitute relied upon to fill the deficit. China will struggle to increase poultry production by 3 mmt this year, Hu said.
    After years of prioritizing control of manure pollution by closing or moving farms, local officials are now accused of over-zealous enforcement and are ordered to pare back zones where livestock farms are banned and pay for re-building hog farms.
    Hu acknowledged that there hasn't been much progress in cleaning up manure pollution
    Local leaders in pork-producing regions have been asking for slaughterhouses to be built in their counties because subsidized pig farms generate no tax revenue and pigs are mostly trucked off to cities for slaughter. This pattern is said to "unsustainable," and trucking pigs around the country is acknowledged as contributing to the spread of disease.
    Hu acknowledged chronic weakness and under-funding of grassroots veterinary services.

Hu Chunhua recommended numerous policy measures to stabilize production and maintain market supplies of pork. Provincial and local officials are responsible for implementing these policies:

    Pork farms and companies are to be given short-term aid.
    Banks must not cut off lending to swine farms and slaughterhouses; subsidized loans should be given to swine farms. Provincial government loan guarantee organizations should prioritize recovery of swine farms.
    Poultry companies should also be given aid to expand.
    Each province is charged with maintaining a degree of self-sufficiency in pork. The mayors' market basket system will hold city officials accountable for supplying pork and other nonstaple foods to their citizens.
    Pork reserves should be expanded and made more effective.
    Pork-deficit provinces and cities are to form long-term pork supply agreements with neighboring pork-surplus provinces and counties to establish contiguous regions self-sufficient in pork.
    Officials should work out arrangements by which wealthy cities pay pork-producing counties to support their farms and infrastructure.
    Land and credit should be set aside to build slaughter facilities in pork-producing counties.
    2 billion yuan in food subsidies for low-income people have been announced.

Previous announcements targeted aid to large-scale farms, but the State Council's August 21 circular extended support to household-operated farms and removed a minimum requirement of 15 mu (1 hectare) of land for a farm to receive support.

Vice Premier Hu wrapped up his address by emphasizing two points that are distinctive features of the communist regime:

    "We must strengthen the guidance and management of public opinion."    "Stabilization of production and maintaining supply are an important political task."

[not the author's emphasis]

In China's economic model, government officials are the "directors of the play" and "companies are actors on the stage." It follows that officials have privileged access to information so they can pull the strings to organize the play. Hu reflects this duality by goading officials to "apply force on internal matters" and "in external matters do well on propaganda, issuance of information, and managing public opinion" (italics added). In the same vein, Hu advised statistical bureaus to increase the frequency of "confidential" or "secret" surveys so the government can devise timely support measures. In other words, Chinese statistics are internal information for the government's use; statistics are only released to the public after being massaged and molded into a propaganda statement.

The vice premier's remarks reveal a contradiction regarding information gathering. Like an angry schoolmaster, Hu Chunhua chided local officials for not reporting of disease to central authorities and promises they will be punished for doing so. While he is aghast that local officials withhold information from him, the Vice Premier seems to have no problem withholding information from the public. Hu believes information released to the public must be carefully managed to shape their opinion. The public cannot be trusted with information because they might panic and hoard pork or try to corner the market. (And of course, government officials would never do this themselves.)

Management of public opinion is evident from a comparison of Premier Hu's speech with a Peoples Daily propaganda article. While Premier Hu warned officials about an impending shortage of pork and potential market instability, Peoples Daily quoted a Ministry of Agriculture official who declared that "The overall meat supply is assured" and "the pork market is overall stable." Premier Hu told officials they face a long, difficult battle against ASF, but articles intended for the public declare that the disease is under control and normal production and marketing can now resume.

The elevation of promoting pork production as a "political task" reveals the constantly changing crisis-driven priorities kicked down to local officials. Efforts to control manure pollution are an example of the constant oscillation of "political tasks." Policy pronouncements in the last two months have included vague admonishments not to go beyond legal requirements in designating zones where livestock farms are banned or limited. These refer to a an ongoing tug of war over efforts to clean up pollution from pig manure in a rapidly urbanizing society. The first livestock law in 2005 included a provision that called for each community to designate zones where livestock farms would be banned,  limited or encouraged. Livestock farms would be restricted near residential areas, institutions of higher education, drinking water sources, markets, roads, and scenic areas. This idea was rarely implemented until 2013 when a water pollution prevention action plan issued by the state council called for designating such zones by the end of 2017 and destroying or moving farms from zones where they were banned.

In 2017, the Ministry of Agriculture issued a document criticizing local officials for being overzealous in designating farm-ban zones--although the examples they gave seem consistent with language describing the zone designation going back to the 2005 livestock law. Two years later, facing a pork shortage, officials now seem to have decided the Ministry of Agriculture is right by ordering local officials to scale back the pig-ban zones and rebuilding pig farms that were demolished. In his teleconference, Premier Hu also seemed to admit that little had been done to promote treatment and utilization of pig manure although it was a feature of the 2016-2020 plan for the swine sector. Environmental control seems to have been pushed aside as a priority now that there's a pork supply crisis.

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In response to a comment, the author says:

In China, employees of statistical organizations must be vetted for political reliability, and even low-level managers must spend months at a communist party training school before taking up their positions. The head of the organization is assigned to his/her post by the communist party and serves as party secretary.

Gaze patterns of sexually fluid women and men at nude females and males

Widman, D. R., Bennetti, M. K., & Anglemyer, R. (2019). Gaze patterns of sexually fluid women and men at nude females and males. Evolutionary Behavioral Sciences, http://dx.doi.org/10.1037/ebs0000183

Abstract: Investigations of sexual fluidity have consistently found that women are more fluid than men. Several theories have been proposed to explain this sex difference. Two of these suggest that women are sexually fluid due to reproductive pressure from men. These theories suggest that women are fluid, in part, to satisfy male sexual behavior, either by engaging in and enhancing polygynous matings or allowing extrapair copulations for the men with those women the men’s mates select. This suggests that women, in their assessment of the attractiveness of other women, should assess female attractiveness as men do. The current study examined gaze patterns of heterosexual men and women while looking at nude male and female models. The results replicate the common findings that women are more fluid than men and that men gaze at the breasts of nude female models. We also report men who believe that they are more successful at mating gaze more at male chests than less confident men and that women do gaze at sexualized body areas of men, specifically the hips and groin. Finally, as hypothesized, more fluid women spend more time gazing at the breasts of nude female models, suggesting a male pattern of attractiveness assessment.

Comparative thanatology encompasses the study of death-related responses in non-human animals to elucidate the evolutionary origins of human behavior in the context of death; seems that chimpanzees console bereaved mothers

Do chimpanzees (Pan troglodytes) console a bereaved mother? Zoë Goldsborough et al. Primates, September 4 2019. https://link.springer.com/article/10.1007/s10329-019-00752-x

Abstract: Comparative thanatology encompasses the study of death-related responses in non-human animals and aspires to elucidate the evolutionary origins of human behavior in the context of death. Many reports have revealed that humans are not the only species affected by the death of group members. Non-human primates in particular show behaviors such as congregating around the deceased, carrying the corpse for prolonged periods of time (predominantly mothers carrying dead infants), and inspecting the corpse for signs of life. Here, we extend the focus on death-related responses in non-human animals by exploring whether chimpanzees are inclined to console the bereaved: the individual(s) most closely associated with the deceased. We report a case in which a chimpanzee (Pan troglodytes) mother experienced the loss of her fully developed infant (presumed stillborn). Using observational data to compare the group members’ behavior before and after the death, we found that a substantial number of group members selectively increased their affiliative expressions toward the bereaved mother. Moreover, on the day of the death, we observed heightened expressions of species-typical reassurance behaviors toward the bereaved mother. After ruling out several alternative explanations, we propose that many of the chimpanzees consoled the bereaved mother by means of affiliative and selective empathetic expressions.

Keywords: Thanatology Consolation Empathy Bereavement Chimpanzees

Striking discrepancies between what people want in a potential partner and what the opposite gender imagines they want in romantic relationships; in addition, women appear to be better at imagining men’s preferences

Jago, Carl P. 2019. “What Women Say They Want Versus What Men Imagine They Do: A Convenient Method for Characterizing and Comparing Self-reported and Perceived Preferences.” PsyArXiv. September 4. doi:10.31234/osf.io/dh9ub

Abstract: Previous research has shown that, in the context of romantic relationships, men preferentially advertise traits such as wealth, status, and ambition while women preferentially advertise physical attractiveness. This finding is somewhat surprising in light of other previous research showing that men and women report these traits to be less important than others such as trustworthiness, intelligence, and warmth. In the current study, we addressed one potential reason for the disconnect, which is that men and women’s beliefs about what the other gender prefers are misguided. To address this, we asked participants to both self-report the traits they prefer in a romantic partner and to indicate what they imagine the opposite gender prefers. The results reveal some striking discrepancies between what people want in a potential partner and what the opposite gender imagines they want. In addition, women appear to be better at imagining men’s preferences, and we discuss several reasons why this might be the case.

Prolonged care and cannibalism of infant corpse by relatives in semi-free-ranging capuchin monkeys

Prolonged care and cannibalism of infant corpse by relatives in semi-free-ranging capuchin monkeys. Cinzia Trapanese et al. Primates, September 3  2019. https://link.springer.com/article/10.1007/s10329-019-00747-8

Abstract: Cannibalism is a quite common behaviour in animals that can have survival value when food is scarce or in the case of overpopulation. Conversely, cannibalism can also increase pathogen transmission and reduce fitness. In primates, some cases of cannibalism are associated with infanticide or are performed by mothers after their newborn has died (filial cannibalism). We report here the first observation of cannibalism, specifically infant cannibalism, in a semi-free-ranging group of brown capuchin monkeys (Sapajus apella). The baby was likely stillborn, as parts of the cranial bones were missing and no fresh injuries were visible. After half a day of taking care of the dead infant, the mother ate part of the corpse’s skin and the highly nutritional viscera, possibly thereby compensating for the physiological costs of pregnancy. After attentively watching his mother’s behaviour, the older brother of the dead newborn similarly ate parts of the corpse. Although we cannot rule out idiosyncrasy and vertical social transmission, it is possible that cannibalism is a normal—albeit rare—part of the behavioural repertoire of capuchin monkeys.

Keywords: Cannibalism Filial cannibalism Death Thanatology Maternal care Sapajus apella


Check also Grieving Orca Carries Dead Calf for More Than 3 Days: ‘She’s Just Not Letting Go.’ Mihir Zaveri. The New York Times, Jul 27 2018. https://www.bipartisanalliance.com/2018/07/grieving-orca-carries-dead-calf-for.html

And Prolonged transport and cannibalism of mummified infant remains by a Tonkean macaque mother. Arianna De Marco, Roberto Cozzolino, and Bernard Thierry. Primates, https://www.bipartisanalliance.com/2017/09/prolonged-transport-and-cannibalism-of.html

And Nishie H, Nakamura M. A newborn infant chimpanzee snatched and cannibalized immediately after birth: Implications for “maternity leave” in wild chimpanzee. Am J Phys Anthropol. 2017;00:1–6. https://www.bipartisanalliance.com/2017/10/a-newborn-infant-chimpanzee-snatched.html

The brain, sensing the internal & external milieu, & consulting its database, predicts what is likely to be needed; it computes the best response; it rewards a better-than-predicted result with a pulse of dopamine, encouraging learning

Allostasis: A Brain-Centered, Predictive Mode of Physiological Regulation. Jay Schulkin, Peter Sterling. Trends in Neurosciences, September 2 2019. https://doi.org/10.1016/j.tins.2019.07.010

Highlights
.    Allostasis – brain-centered predictive regulation – starts with a hypothalamic clock that synchronizes clocks in every tissue.

.    On this diurnal cycle of metabolic variation, the brain superimposes an episodic rest–activity cycle that coordinates change in key systems (respiration, heart rate, blood pressure, body temperature, and physical activity).

.    The brain predicts upcoming needs for food, water, salt, warmth, or cooling and satisfies them by adjusting physiology and behavior to prevent errors that would require homeostatic correction.

.    The brain rewards a better-than-predicted result with a pulse of dopamine, thereby encouraging the organism to learn effective regulatory behaviors.

Abstract: Although the concept of allostasis was proposed some 30 years ago, doubts persist about its precise meaning and whether it is useful. Here we review the concept in the context of recent studies as a strategy to efficiently regulate physiology and behavior. The brain, sensing the internal and external milieu, and consulting its database, predicts what is likely to be needed; then, it computes the best response. The brain rewards a better-than-predicted result with a pulse of dopamine, thereby encouraging the organism to learn effective regulatory behaviors. The brain, by prioritizing behaviors and dynamically adjusting the flows of energy and nutrients, reduces costly errors and exploits more opportunities. Despite significant costs of computation, allostasis pays off and can now be recognized as a core principle of organismal design.

Drop of compliance over time: While in 2003 the foot-in-the-door strategy was effective in Ukraine and ineffective in Poland, in 2013, the effect was insignificant in both Ukraine and Poland

The Foot-in-the-Door Phenomenon 40 and 50 Years Later: A Direct Replication of the Original Freedman and Fraser Study in Poland and in Ukraine. Malgorzata Gamian-Wilk, Dariusz Dolinski. Psychological Reports, September 2, 2019. https://doi.org/10.1177/0033294119872208

Abstract: Since the original Freedman and Fraser studies were published, a great amount of research using the foot-in-the-door tactic has revealed its effectiveness. Nevertheless, the effect sizes reported in meta-analysis studies tend to be low and the effect size obtained by Freedman and Fraser in their studies has never been obtained again. We conducted a direct replication of the original foot-in-the-door experiment in two time intervals and in two countries. The results indicate a drop of compliance over time. The results reveal that, while in 2003 the foot-in-the-door strategy was effective in Ukraine and ineffective in Poland, in 2013, the effect was insignificant in both Ukraine and Poland. The results are explained by high ecological validity of the foot-in-the-door procedure.

Keywords: Replication, social influence, compliance, foot-in-the-door, ecological validity

A Large-Scale Test of Gender Bias in the Media

Shor, Eran, Arnoutvan de Rijt, and Babak Fotouhi.2019. “A Large-Scale Test of Gender Bias in the Media.” Sociological Science 6: 526-550. September 3, 2019. DOI:10.15195/v6.a20

Abstract: A large body of studies demonstrates that women continue to receive less media coverage than men do. Some attribute this difference to gender bias in media reporting—a systematic inclination toward male subjects. We propose that in order to establish the presence of media bias, one has to demonstrate that the news coverage of men is disproportional even after accounting for occupational inequalities and differences in public interest. We examine the coverage of more than 20,000 successful women and men from various social and occupational domains in more than 2,000 news sources as well as web searches for these individuals as a behavioral measure of interest. We find that when compared with similar-aged men from the same occupational strata, women enjoy greater public interest yet receive less media coverage.

Keywords:gender; bias; media coverage; computational analysis

FAO highlights the great potential of genetic improvements in aquaculture for better food security, since we are still largely farming wild fish, with 45 pct of cultured species being little different from their wild counterparts

FAO highlights the great potential of genetic improvements in aquaculture for better food security. FAO Press Release, Aug 23 2019. http://www.fao.org/news/story/en/item/1205417/icode/

Wider appropriate application of genetic improvement in aquaculture will significantly boost sustainable food supply for future generations

Aug 23 2019, Rome - Wider, appropriate and long-term application of genetic improvement in aquaculture, with a focus on selective breeding, will help boost food production to meet a projected increase in demand for fish and fish products with relatively little extra feed, land, water and other inputs, according to a new FAO report launched today.

The State of the World's Aquatic Genetic Resources for Food and Agriculture reviews our use of aquatic genetic resources both in capture fisheries and in aquaculture, in areas under national jurisdiction. The first-ever global report of its kind is based on information provided by 92 countries, together representing 96 percent of global aquaculture production and over 80 percent of capture fisheries production.

Aquaculture is lagging far behind terrestrial agriculture - both crops and livestock - in terms of the characterization, domestication and improvement of its genetic resources for food production. The report concludes that we have the opportunity to significantly enhance sustainable aquaculture production through the strategic management and development of some of the more than 550 species currently used in aquaculture.

According to the report, we are still largely farming wild fish, with 45 percent of cultured species being little different from their wild counterparts. The report also notes that just over half of the reporting countries consider that genetic improvement is having a significant impact on their aquaculture production, in contrast with the extensive use of improved breeds and varieties in livestock and crop production. The report stresses the potential for sustainable production gains through the genetic improvement of farmed aquatic resources.

"I strongly welcome this report which is the fruit of a multi-year, country-driven process of data collection and analysis," said FAO Director-General Qu Dongyu. "It highlights the pressures that a growing demand for fish and fish products will place on farmed species, their wild relatives, and the habitats they depend on, as well as the opportunities for sustainable growth. This is why it is crucial that we safeguard, manage and further develop the planet's aquatic genetic resources, allowing organisms to grow, to adapt to natural and human-induced impacts such as climate change, to resist diseases and parasites, and to continue to evolve to help achieve the Sustainable Development Goals and our continued fight for a Zero Hunger world."

Unleashing the potential of aquaculture

According to FAO, a growing human population is expected to drive an increase in fish consumption of approximately 1.2 percent per annum over the next decade. Production of fish and fish products is estimated to reach over 200 million tonnes by 2030.

Given that production from the world's capture fisheries has stabilized at about 90-95 million tonnes per annum, with nearly a third of marine fish stocks being overfished, there is little scope for additional production in the foreseeable future except through loss and waste and efficiencies management. The expected growth in demand for fish and fish products therefore needs to be largely met from aquaculture. In this context, the responsible and sustainable use of aquatic genetic resources will be essential to fulfill this role.

Numerous technologies are available to improve aquatic genetic resources with FAO recommending a focus on well-designed, long-term selective breeding programmes, which can increase productivity of aquatic species by 10 percent per generation.

Many wild species are under threat 

The report notes that all farmed species still have wild relatives in nature but many of these wild species are under threat and are in need of targeted and prioritized conservation. The report calls on countries to develop policies and actions to address this need.

According to the report, the most depleted wild relatives of cultured species are Russian sturgeon, huchen, beluga sturgeon, Atlantic salmon and brown trout. 

The report also notes the potential impacts of escapes including of non-native species, from aquaculture farms, on biodiversity and ecosystems, and calls for the responsible exchange and use of native and non-native aquatic genetic resources.

Strengthening policies and cross-sectoral approach

Food and nutrition security depend on a diverse and healthy food basket, of which aquatic food is an important component. Therefore, aquatic genetic resources should be included in broader food security and nutrition policies.

These policies must consider long-term development strategies for aquaculture, including the transboundary management of aquatic genetic resources, access and benefit-sharing, genetic improvement and conservation, and must involve many sectors and disciplines to be effective.

The report also highlights the need for greater awareness-raising and capacity-building to develop and sustain genetic characterization and improvement, especially in developing countries, including training of geneticists to support selective breeding programmes.

At the request of FAO's Commission on Genetic Resources for Food and Agriculture, a voluntary and collaborative policy response is already under development to address the gaps and needs identified in the report. FAO member countries will review and negotiate this response prior to its adoption as a Global Plan of Action for the conservation, sustainable use and development of aquatic genetic resources for food and agriculture.

Beauty automatically engages our hand movement: Both attractive & unattractive faces captured greater visual attention compared to moderate faces; attractive faces attracted hand movement more strongly

Beauty in the eyes and the hand of the beholder: Eye and hand movements' differential responses to facial attractiveness. Natalie T. Faust, Anjan Chatterjee, George I. Christopoulos. Journal of Experimental Social Psychology, Volume 85, November 2019, 103884. https://doi.org/10.1016/j.jesp.2019.103884

Highlights
•    Facial attractiveness guides attention for actions differently through eye and hand movement.
•    Hand movement was found to be mostly driven by attractive (but not unattractive or moderate) faces.
•    Eye movement was driven by faces on the ends of the attractiveness spectrum (attractive and unattractive but not moderate).
•    “Being moved” by beauty might not simply be a metaphor. Rather, beauty automatically engages our hand movement.
•    Besides eye movement, hand movement discloses additional information on facial attention mechanisms.

Abstract: Faces carry significant social information and, as such, humans need to allocate attention to them. In particular, facial attractiveness is an important dimension that considerably influences social judgment. The allocation of attentional resources to facial attractiveness has been widely examined in social psychology, however mostly by measures of eye movement. While this literature demonstrates the influence of facial attractiveness on overt attention, how facial attractiveness drives covert attention is less known. In two studies, we tracked eye and hand movements while participants were engaged in a numerical task in the presence of faces of various degrees of attractiveness. Results show that both attractive and unattractive faces captured greater visual attention compared to moderate faces, whereas attractive faces attracted hand movement more strongly than both unattractive and moderate faces. The present study suggests that facial attractiveness guides attention for actions differently through eye and hand movements.

Dieting also starves romantic relationships: the association between dieting and romantic relationship quality

Dieting also starves romantic relationships: the association between dieting and romantic relationship quality. MacKenzie D. A. Robertson, Univ of Victoria, Faculty of Graduate Studies. Thesis. Aug 30 2019. http://hdl.handle.net/1828/11093

Abstract: The negative health consequences of dieting for individuals are well established. Yet little is known about the interpersonal consequences of dieting for romantic couples. This study utilized self-report questionnaire data from undergraduate students (N = 221) and their romantic partners (N = 74) to examine whether dieting is associated with romantic relationship processes. I hypothesized that dieting engagement would indirectly predict worse relationship outcomes. Body dissatisfaction is a core dimension of self-esteem, and people with low self-esteem often project their self-doubts onto their partner. Because dieting is strongly associated with body dissatisfaction, I hypothesized that people who engaged in more extreme dieting may project their negative self-evaluations of their bodies onto their partners, resulting in negative evaluations of their romantic partner’s attractiveness. Moreover, I expected that negative partner evaluations would predict worse relationship outcomes for both partners. As hypothesized, participants who engaged in more dieting (e.g., restricting food intake, feeling guilty after eating, compensatory behaviors) experienced higher body dissatisfaction, which predicted more negative evaluations of their romantic partner’s physical attractiveness. In turn, finding their partner less attractive predicted more negative evaluations of their partner’s worth, increased conflict, and lower commitment to their relationship. Moreover, romantic partners who were rated as less attractive perceived participants’ negative evaluations of their attractiveness, and experienced lower self-esteem. However, participant dieting did not predict relationship outcomes for their romantic partners. Overall, results indicate that dieting is negatively associated with both individual and interpersonal well-being. Findings must be replicated in longitudinal research, but highlight the potential for the negative consequences of dieting to extend beyond the individual to influence close relationship processes. This research also contradicts dominant models of dieting and close relationships that frame dieting in a positive light.

Romantic Interest Is Predicted by Body Sway and Promoted by Groovy Music in Speed Dating

Chang, Andrew, Haley E. Kragness, Wei Tsou, Dan J. Bosnyak, Anja Thiede, and Laurel Trainor. 2019. “Romantic Interest Is Predicted by Body Sway and Promoted by Groovy Music in Speed Dating.” PsyArXiv. August 29. doi:10.31234/osf.io/sb9ze

Abstract: Speed dating research paradigms offer both high external validity and experimental control for studying romantic interest, an essential form of social bonding. While previous studies focused on the effect of social and personality factors on romantic interest, the present study investigated whether romantic interest can be (1) predicted by dyadic interactive body sway, and (2) be further promoted by groovy background music. Participants’ body sway trajectories were recorded during speed dating. Directional (communicative) body sway coupling, but not body sway similarity, predicted interest in a long-term relationship above and beyond rated physical attractiveness. In addition, groovy music promoted interest in meeting a dating partner again. Overall, we demonstrate that real-world romantic interest can be revealed by body sway interaction, potentially reflecting the quality of communication and perceived compatibility, and can be promoted by groovy music.