intellectual vanities… about close to everything

Cravings - How The Regulation Of Emotions Influence Decision Making

Posted in Neuroscience, Psychology by huehueteotl on July 4th, 2008

The cognitive strategies humans use to regulate emotions can determine both neurological and physiological responses to potential rewards, a team of New York University and Rutgers University neuroscientists has discovered. The findings, reported in the most recent issue of the journal Nature Neuroscience, shed light on how the regulation of emotions may influence decision making.

Previous research has demonstrated these strategies can alter responses to negative events. However, less understood is whether such strategies can also efficiently regulate expectations of a future reward or a desired outcome. Scientists have already determined that the expectation of a potential reward brings about positive feelings and aids recognizing environmental cues that predict future rewards. Central to this process is the role of the striatum, a multi-faceted structure in the brain that is involved in reward processing–and which is especially engaged when potential rewards are predicted or anticipated.

http://www.impulsecontroldisorders.org/images/1-brain8proof.jpg

However, the striatum signal is not always beneficial. Its activity also correlates with drug-specific cravings, most likely increasing urges to partake in risk-seeking behavior in the pursuit of rewards that are detrimental. Therefore, understanding how to regulate or control the positive feelings associated with reward expectation is an important line of inquiry.

The NYU study was conducted by a team of researchers from the laboratory of NYU Professor Elizabeth Phelps, who co-authored the work with Mauricio R. Delgado, now a professor at Rutgers University, and M. Meredith Gillis, an NYU graduate student. They sought to better understand the influence of emotional regulation strategies on the physiological and neural processes relevant to expectations of reward.

The study’s subjects were presented with two conditioned stimuli, a blue and a yellow square that either predicted or did not predict a potential monetary reward. Prior to each trial, participants were also given a written cue that instructed them to either respond to the stimulus (”think of the meaning of the blue square, such as a potential reward”) or regulate their emotional response to the stimulus (”think of something blue in nature that calms you down, such as the ocean”).

Skin conductance responses (SCRs) of the participants were taken at the beginning of each conditioned stimulus. These served as a behavioral measure of physiological reaction potentially related to reward anticipation.

The results showed that the participants’ emotion regulation strategies could influence physiological and neural responses relevant to the expectation of reward. Specifically, results from the SCRs revealed that the subjects’ emotion regulation strategies decreased arousal that was linked to the anticipation of a potential reward.

“Our findings demonstrated that emotion regulation strategies can successfully curb physiological and neural responses associated with the expectation of reward,” said Delgado. “This is a first step to understanding how our thoughts may effectively control positive emotions and eventual urges that may arise, such as drug cravings.”

Nature Neuroscience Published online: 29 June 2008 | doi:10.1038/nn.2141

Brief Communication abstract

Regulating the expectation of reward via cognitive strategies

Mauricio R Delgado, M Meredith Gillis, Elizabeth A Phelps


Previous emotion regulation research has been successful in altering aversive emotional reactions. It is unclear, however, whether such strategies can also efficiently regulate expectations of reward arising from conditioned stimuli, which can at times be maladaptive (for example, drug cravings). Using a monetary reward-conditioning procedure with cognitive strategies, we observed attenuation in both the physiological (skin conductance) and neural correlates (striatum) of reward expectation as participants engaged in emotion regulation.

‘Feeling Fat’ Feels Worse Than Being Fat

Posted in Psychology by huehueteotl on June 23rd, 2008

The quality of life of adolescents who think they are too fat is worse than for adolescents who really are obese. This was a result of the all Germany Health Interview and Examination Survey for Children and Adolescents (KiGGS) of the Robert Koch Institute, as presented by Bärbel-Maria Kurth and Ute Ellert in the current edition of Deutsches Ärzteblatt International.


KiGGS study, almost 7000 boys and girls aged between 11 and 17 years were weighed and asked about their self-assessment, ranging from “far too thin” to “far too fat.” In addition, they all completed a questionnaire about quality of life. As a result of their analysis, the scientists established that about three quarters of adolescents are of normal weight. Almost 55% of the girls, but just under 36% of the boys thought that they were “too fat,” although only about 18% of the adolescents were actually overweight. 7% to 8% of the adolescents were underweight.

The quality of life is lower in obese adolescents. However, this correlates to a large extent with self-evaluation. If adolescents think they are “far too fat,” they forfeit a lot of their quality of life, whatever their actual weight. This is particularly marked with girls. On the other hand, if they consider their weight “just right,” their quality of life is the same as if they were of normal weight, even if this is not true. The proportion of adolescents who think they are overweight has been increasing more rapidly in recent years than the proportion of those who really are overweight.

In an accompanying editorial, Johannes Hebebrand points out that adolescents are exposed to considerable social pressure to be thin. He thinks that it is remarkable that as many as 40% of the subjects thought that their weight was right, in spite of the ideal of slimness and the stigma of being overweight.

Dtsch Arztebl Int 2008; 105(23): 406–12 DOI: 10.3238/arztebl.2008.0406

Perceived or True Obesity: Which Causes Min Adolescents?

Bärbel-Maria Kurth and Ute Ellert. 

SUMMARY
Introduction: The consequences of perceived obesity on quality of life are compared with those of genuine obesity in adolescents.
Methods: Within the framework of the German Health Interview and Examination Survey for Children and
Adolescents (KiGGS), the height and weight of the participants were measured. Children over 11 years of age
were asked whether they thought of themselves as underweight, normal, or overweight. As a measure of their health-related quality of life they completed the internationally employed KINDL-R generic questionnaire.
Results: While 74.8% of 11- to 17-year-old girls and boys are of normal weight, only 40.4% believe that they are just the right weight.“ Only 60.9% of obese girls and 32.2% of obese boys think of themselves as overweight. The data showed that genuinely obese adolescents, as classified by body mass index, have a better quality of life than those who only perceive themselves as being overweight.
Discussion: A realistic body image on the part of obese adolescents is a prerequisite for their acceptance of interventions. The marked deterioration in quality of life resulting from perceived obesity, even for young people of normal weight, illustrates the complexity of the struggle against obesity.

Why Guilt Doesn’t Keep Some Of Us From Making The Same Mistakes Twice

Posted in Psychology by huehueteotl on June 4th, 2008

Many of us experience a tinge of guilt as we delight in feelings of pleasure from our favorite indulgences, like splurging on an expensive handbag or having another drink. We make resolutions: this will be the last time, positively.

Yet, in spite of documented ambivalence towards temptation and well-meaning vows not to succumb again, consumers often end up repeating the same or similar choices. A new study by Suresh Ramanathan (University of Chicago) and Patti Williams (Wharton School of Business, University of Pennsylvania) examines repeated impulsive behavior despite the presence of guilt — important research underscored by the increasing prevalence of binge drinking, obesity, and credit card debt.

While most published research has examined the emotional consequences of self-control lapses, Ramanathan and Williams expand the literature by studying the affective outcomes of indulgent consumption as it unfolds over time. In two studies, they examine the immediate and delayed emotional consequences of engaging in indulgent consumption among both prudent and impulsive consumers.

Significantly, the researchers find that both impulsive and prudent consumers experience a mixture of positive and negative emotions immediately after consuming a food indulgence. However, the components of the emotional ambivalence are different across the two groups.

“While the impulsive consumers do feel negative emotions such as stress, they do not feel much guilt or regret,” the authors reveal.

Further, the time course of these emotions is different across the two types of consumers. Impulsive people continue to feel residual effects of their positive emotions over time, but experience a sharp decline in their negative emotions. Prudent people continue to experience strong negative and self-conscious emotions, but report significantly lower levels of positive emotions.

“Thus, over time, impulsive consumers are left only with their positive feelings about indulging, while prudent consumers are left only with their negative feelings about indulging. This, in turn, affects propensity to repeat an act of indulgence,” the authors explain.

Therefore, impulsive consumers are much more likely to engage in a second indulgent act over time than are prudent consumers. The authors also find differences in the extent to which people take actions to undo their emotional ambivalence. After indulging once, prudent consumers are more likely than impulsive consumers to seize an opportunity to make a utilitarian choice.

“Impulsive people may be more comfortable with duality or conflict, or may be more resigned to the experience of such conflict,” the authors conclude. “Prudent people, on the other hand, seem to be more eager to seize the chance to launder their negative emotions.”

JOURNAL OF CONSUMER RESEARCH, Inc. • Vol. 34 • August 2007

Immediate and Delayed Emotional Consequences of Indulgence: The Moderating Influence of Personality Type on Mixed Emotions

Suresh Ramanathan, Patti Williams

The majority of literature looking at self-control dilemmas has focused on short-term positive and long-term negative affective outcomes arising from indulgence. In two studies, we find evidence for more complex emotional responses after indulgent consumption. We show that consumers feel simultaneous mixtures of both positive and negative emotions in response to indulgences and that the specific components of those emotional mixtures vary, depending on differences in individual impulsivity. Further, these mixtures are resolved differently over time, leading to differences in subsequent choices. In addition we show that more prudent consumers are likely to seize an opportunity to get rid of, or “launder,” their negative emotions after an indulgence by subsequently making utilitarian versus hedonic choices.

Look Before You Leap: New Study Examines Self-control

Posted in Psychology by huehueteotl on June 3rd, 2008

Reckless decision-making can lead to dire consequences when it comes to food, credit cards, or savings. What’s the key to making good decisions? A new study in the Journal of Consumer Research outlines a novel method for measuring people’s abilities to consider the consequences of their actions. It also provides hope for consumers who want to make more prudent decisions.

Authors Gergana Y. Nenkov (Boston College), J. Jeffrey Inman, and John Hulland (both University of Pittsburgh) developed a 13-question survey that rated participants on a scale called the Elaboration on Potential Outcomes (EPO) scale. The scale proved to be a reliable measure of how much participants considered the consequences of their actions. For example, when undergraduates considered whether to get LASIK surgery or whether to charge an expensive electronics item on an already heavily charged credit card, high EPO scores were associated with more consequence-related thoughts.

In a number of settings, researchers found that consumers who think about the pros and cons before making decisions reported that they were more likely to exercise and consume healthy foods. They had lower rates of alcohol abuse, procrastination, and overspending. They were also more likely to be saving money for retirement.

The good news, according to the authors, is that people who aren’t inclined to consider the consequences of their actions can be aided by simple interventions, like brochures and advertising that encourage them to think about the dangers of obesity or the benefits of saving for retirement. Scare tactics, it seems, were the most effective. “The consideration of negative consequences has a bigger impact than the consideration of positive consequences,” the authors write.

This somehow contradicts Bandura’s well proven model of behavioral change, where negative consequences correlate less then half as much as self efficacy and situation outcome expectancies when it comes to successful decision for a behavioral change. It seems like decision making is not the same in consumption or eating behaviour, and the extension of findings in marketing research to experimental psychology is obviously a slippery slope.

“The importance of studying consumers’ self-control is widely recognized, since being unable to regulate one’s emotions, impulses, actions and thoughts creates problems, not only for individual consumers, but also for society as a whole,” write the authors, hopefully not another slippery slope towards consumer manipulation…

JOURNAL OF CONSUMER RESEARCH, Inc. • Vol. 35 • June 2008

Considering the Future: The Conceptualization and Measurement of Elaboration on Potential Outcomes
Gergana Y. Nenkov, J. Jeffrey Inman, and John Hulland

We examine a new construct dealing with individuals’ tendency to elaborate on potential outcomes, that is, to generate and evaluate potential positive and negative consequences of their behaviors. We develop the elaboration on potential outcomes (EPO) scale and then investigate its relationships with conceptually related traits and its association with consumer behaviors such as exercise of self-control, procrastination, compulsive buying, credit card debt, retirement investing, and healthy lifestyle. Finally, we show that consumers with high EPO levels exhibit more effective self-regulation when faced with a choice and that EPO can be primed, temporarily improving self-regulation for consumers with low EPO levels.

Sin, Thy Name Is Temptation - Dangerous Bikinis

Posted in Psychology by huehueteotl on June 2nd, 2008

Images of sexy women tend to whet men’s sexual appetite. But stimulating new research in the Journal of Consumer Research says there’s more than meets the eye. A recent study shows that men who watched sexy videos or handled lingerie sought immediate gratification—even when they were making decisions about money, soda, and candy.

Authors Bram Van den Bergh, Siegfried DeWitte, and Luk Warlop (KULeuven, Belgium) found that the desire for immediate rewards increased in men who touched bras, looked at pictures of beautiful women, or watched video clips of young women in bikinis running through a park.

“It seems that sexual appetite causes a greater urgency to consume anything rewarding,” the authors suggest. Thus, the activation of sexual desire appears to spill over into other brain systems involved in reward-seeking behaviors, even the cognitive desire for money.

“After they touched a bra, men are more likely to be content with a smaller immediate monetary reward,” writes Bram Van den Bergh, one of the study’s authors. “Prior exposure to sexy stimuli may influence the choice between chocolate cake or fruit for dessert.”

The authors believe the stimuli bring men’s minds to the present as opposed to the future. “The study demonstrates that bikinis cause a shift in time preference: Men live in the here and now when they glance at pictures featuring women in lingerie. That is, men will choose the immediately available rewards and seek immediate gratification after sex cue exposure.”

Do all straight men respond the same? Actually, no. Some men are highly responsive to rewards while others are not so sensitive, and the more reward-sensitive men are the impatient ones.

In fact, doing a task designed to inspire financial satisfaction reduced the bikini-inspired impatience, just as feeling full reduces food cravings. Men may want to be aware of bikinis’ effects on their bank accounts and waistlines.

JOURNAL OF CONSUMER RESEARCH, Inc. • Vol. 35 • June 2008

Bikinis Instigate Generalized Impatience in Intertemporal Choice
Bram Van den Bergh, Siegfried Dewitte, and Luk Warlop

Neuroscientific studies demonstrate that erotic stimuli activate the reward circuitry processing monetary and drug rewards. Theoretically, a general reward system may give rise to nonspecific effects: exposure to “hot stimuli” from one domain may thus affect decisions in a different domain. We show that exposure to sexy cues leads to more impatience in intertemporal choice between monetary rewards. Highlighting the role of a general reward circuitry, we demonstrate that individuals with a sensitive reward system are more susceptible to the effect of sex cues, that the effect generalizes to nonmonetary rewards, and that satiation attenuates the effect.

Mood Is In The Eye Of The Beholder

Posted in Psychology by huehueteotl on May 29th, 2008

The old saying, “beauty is in the eye of the beholder,” has been scientifically show to be true. A study in a recent issue of Plastic and Reconstructive Surgery®, the official medical journal of the American Society of Plastic Surgeons (ASPS), found that variations in eyebrow shape, eyelid position, and wrinkles significantly impact how your facial expressions, and subsequent mood, are perceived by others.

“A key complaint of those seeking facial plastic surgery is that people always tell them they look tired, even though they do not feel tired,” said John Persing, MD, ASPS member and study co-author. “We found that variations in eyebrow contour, drooping of the upper eyelid, and wrinkles may be conveying facial expressions that don’t necessarily match how patients are feeling.”

In the study, a standardized photo of a youthful face was digitally altered to change a number of variables, including eyebrow shape and position; upper and lower eyelid position; upper eyelid drooping and removal of excess skin; and facial wrinkles. Twenty health care workers were given 16 photos and asked to rate, on a scale of 0 to 5, the presence of seven expressions or emotions: tiredness, happiness, surprise, anger, sadness, disgust, and fear. The results for each altered photo were compared with scores from the original unaltered photo. Overall, eyebrow shape had a greater influence than absolute position on perceived mood.

Tiredness

Drooping of the upper eyelid was the biggest indicator of tiredness, according to the study. Simulating skin removal of the upper eyelid, as performed in some eyelid procedures, but not correcting accompanying eyelid ptosis (drooping), resulted in an increase in the perception of tiredness (and sadness). Photos that included an overall elevation of the eyebrows or an increase in the distance between the eyebrow and upper eyelid also increased the perception of tiredness.

Anger & Disgust

Lowering or slanting the inner corner of the eyebrows towards the nose, as well as adding forehead winkles significantly increased the perceived facial expressions of anger and disgust.

Fear & Surprise

Raising the upper eyelids produced an increase in the perception of surprise and fear. Also, raising the outer corner of the eyebrows produced an increase in the perception of surprise.

Sadness

Raising the inner corner of the eyebrows away from the nose was perceived as a sad facial expression.

Happiness

Happiness was perceived by raising the lower eyelid and the presence of crow’s feet, which, according to the study, seem to simulate the cheek elevation that occurs with smiling.

“The eyes and their related structures nonverbally communicate a wide range of expressions that are universal to all people,” said Dr. Persing. “Therefore facial expression should be a factor in how patients and their plastic surgeons select various rejuvenation procedures. As our findings show, even the slightest modification can elicit profound changes in how others perceive us.”

Plastic & Reconstructive Surgery. 121(5):1793-1802, May 2008.

The Influence of Forehead, Brow, and Periorbital Aesthetics on Perceived Expression in the Youthful Face.

Knoll, Bianca I. M.D.; Attkiss, Keith J. M.D.; Persing, John A. M.D.

Abstract:
Background: The purpose of this study was to characterize the relative influence of eyebrow position and shape, lid position, and facial rhytides on perceived facial expression as related to blepharoplasty, with a specific focus on the perception of tiredness.

Methods: A standardized photograph of a youthful upper face was modified using digital imaging software to independently alter a number of variables: brow position/shape, upper/lower lid position, pretarsal show, and rhytides. Subjects (n = 20) were presented with 16 images and asked to quantify, on a scale from 0 to 5, the presence of each of seven expressions/emotions as follows: “surprise,” “anger,” “sadness,” “disgust,” “fear,” “happiness,” and “tiredness.”

Results: Statistically significant values for tiredness were achieved by changes of increasing and decreasing the pretarsal skin crease, lowering the upper eyelid, and depressing the lateral brow. Happiness was perceived by elevation of the lower lid or the presence of crow’s feet. Brow shape had a greater influence than absolute position on perceived expression. Elevation of the lateral brow was perceived as surprise, whereas depression of the medial brow and rhytides at the glabella were perceived as anger and disgust. Elevation of the medial brow elicited a minimal increase for sadness.

Conclusions: This study showed that the perception of tiredness is most affected by the length of pretarsal lid height (e.g., ptosis). Surprisingly, simulating the skin resection of an upper blepharoplasty results in a paradoxical increase in the perception of tiredness as well. Modifications of brow contour elicit profound changes in perceived facial mood to a greater degree than absolute brow position.

(C)2008American Society of Plastic Surgeons

Having Less Power Impairs The Mind And Ability To Get Ahead

Posted in Current Affairs, Psychology by huehueteotl on May 19th, 2008

New research appearing in the May issue of Psychological Science, a journal of the Association for Psychological Science, suggests that being put in a low-power role may impair a person’s basic cognitive functioning and thus, their ability to get ahead.

social power
In their article, Pamela Smith of Radboud University Nijmegen, and colleagues Nils B. Jostmann of VU University Amsterdam, Adam Galinsky of the Kellogg School of Management at Northwestern University, and Wilco W. van Dijk of VU University Amsterdam, focus on a set of cognitive processes called executive functions. Executive functions help people maintain and pursue their goals in difficult, distracting situations. The researchers found that lacking power impaired people’s ability to keep track of ever-changing information, to parse out irrelevant information, and to successfully plan ahead to achieve their goals.

In one experiment, the participants completed a Stroop task, a common psychological test designed to exercise executive functions. Participants who had earlier been randomly assigned to a low-power group made more errors in the Stroop task than those who had been assigned to a high-power group. Smith and colleagues also found that these results were not due to low-power people being less motivated or putting in less effort. Instead, those lacking in power had difficulty maintaining a focus on their current goal.

In another experiment, participants were asked to move an arrangement of disks from a start position to a final position in as few moves as possible, known to researchers as the Tower-of-Hanoi task. This task tests the more complex ability of planning. In some trials there was a catch: participants had to move the first disk in a direction that was opposite to its final position. Low power participants made more errors and required more moves on these trials, demonstrating poor planning.

Smith and colleagues believe their results have “direct implications for management and organizations.” In high-risk industries such as health care, a single employee error can have fatal consequences. Empowering these employees could reduce the likelihood of such errors. Additionally, their work illustrates how hierarchies perpetuate themselves. By randomly assigning individuals to high and low-power conditions, they demonstrate that simply lacking power can automatically lead to performance that reinforces one’s low standing, sending the powerless towards a destiny of dispossession.

Galinsky, A. D., Magee, J. C., Gruenfeld, D. H, Whitson, J., & Liljenquist, K. A.

Social power reduces the strength of the situation: Implications for creativity, conformity, and dissonance.
Journal of Personality and Social Psychology. (in press).

Abstract
Although power is often conceptualized as the capacity to influence others, the current research explores whether power psychologically protects people from influence. In contrast to classic social psychological research demonstrating the strength of the situation in directing attitudes, expressions, and intentions, five experiments (using experiential primes, semantic primes, and role manipulations of power) demonstrate that the powerful (a) generate creative ideas that are less influenced by salient examples, (b) express attitudes that conform less to the expressed opinions of others, (c) are more influenced by their own social value orientation relative to the reputation of a negotiating partner, and (d) perceive greater choice in making counterattitudinal statements. This last experiment illustrates that power is not always psychologically liberating; it can create internal conflict, arousing dissonance, and thereby lead to attitude change. Across the experiments, high-power participants were immune to the typical press of situations, with intrapsychic processes having greater sway than situational or interpersonal ones on their creative and attitudinal expressions.

Why Face Symmetry Is Sexy Across Cultures And Species

Posted in Psychology by huehueteotl on May 9th, 2008

In humans, faces are an important source of social information. One property of faces that is rapidly noticed is attractiveness. Research has highlighted symmetry and sexual dimorphism (how masculine or feminine a face is) as important variables that determine a face’s attractiveness.

High and low symmetry composite faces for macaques, Hadza, and Europeans. All images are normalised on inter-pupillary distance to control relative image size, have been made perfectly symmetric, and each high/low pair possesses the average colour information of both. Perceptual differences are then dependent on shape differences between high and low symmetry faces that are independent of symmetry. (Credit: Image courtesy of Public Library of Science)

But why are these traits attractive?

One idea is that both traits are adverts of genetic quality or some other aspect of quality such as fertility. An alternative view is that preferences for these traits arise through visual experience and therefore not linked to any underlying biological factors. Faces certainly have the potential to be advertisements of mate ‘quality’ and one way to examine this idea is to look at interrelationships between proposed adverts of quality.

In a study Anthony Little of the University of Stirling and colleagues show that measurements of symmetry and sexual dimorphism from faces are related in humans, both in Europeans and African hunter-gatherers, and in a non-human primate. In all samples, symmetric males had more masculine facial proportions and symmetric females had more feminine facial proportions.

The findings therefore support the claim that sexual dimorphism and symmetry in faces are signals advertising quality by providing evidence that there must be a biological mechanism linking the two traits during development. For example, individuals resistant to disease may be able to grow both symmetric and sexually dimorphic. Such work also suggests that faces may advertise quality across different human populations and even across different primate species.

The researchers are currently collecting data on human perceptions of facial beauty at http://www.alittlelab.com, which also presents more information about their work.

PLoS ONE 3(5): e2106. doi:10.1371/journal.pone.0002106 [link]
Related to Sexual Dimorphism in Faces: Data Across Culture and Species.
Little AC, Jones BC, Waitt C, Tiddeman BP, Feinberg DR, et al. (200 8) Symmetry Is
Abstract
Background

Many animals both display and assess multiple signals. Two prominently studied traits are symmetry and sexual dimorphism, which, for many animals, are proposed cues to heritable fitness benefits. These traits are associated with other potential benefits, such as fertility. In humans, the face has been extensively studied in terms of attractiveness. Faces have the potential to be advertisements of mate quality and both symmetry and sexual dimorphism have been linked to the attractiveness of human face shape.
Methodology/Principal Findings

Here we show that measurements of symmetry and sexual dimorphism from faces are related in humans, both in Europeans and African hunter-gatherers, and in a non-human primate. Using human judges, symmetry measurements were also related to perceived sexual dimorphism. In all samples, symmetric males had more masculine facial proportions and symmetric females had more feminine facial proportions.
Conclusions/Significance

Our findings support the claim that sexual dimorphism and symmetry in faces are signals advertising quality by providing evidence that there must be a biological mechanism linking the two traits during development. Such data also suggests that the signalling properties of faces are universal across human populations and are potentially phylogenetically old in primates.

Selfishness May Be Altruism’s Unexpected Ally

Posted in Psychology by huehueteotl on May 2nd, 2008

Social Darwinism and no end…. In yet another study evolutionary theorists at Binghamton University suggest that selfishness might not be such a villain after all.

Omar Tonsi Eldakar and David Sloan Wilson propose a novel solution to this problem in their article, which is not so new, after all. (s. also: Altruism And Hostility Not Contradicting, But Evolved Together and: Altruism - why we help others)

The authors point out that selfish individuals have their own incentive to get rid of other selfish individuals within their own group.

Eldakar and Wilson consider a behavioral strategy called “Selfish Punisher,” which exploits altruists and punishes other selfish individuals, including other selfish punishers. This strategy might seem hypocritical in moral terms but it is highly successful in Darwinian terms, according to their theoretical model published in PNAS and a computer simulation model published in the Journal of Theoretical Biology. Selfish punishers can invade the population when rare but then limit each other, preventing the altruists from being completely eliminated.

Individuals who behave altruistically are vulnerable to exploitation by more selfish individuals within their own group, but groups of altruists can robustly out-compete more selfish groups. Altruism can therefore evolve by natural selection as long as its collective advantage outweighs its more local disadvantage. All evolutionary theories of altruism reflect this basic conflict between levels of selection.

It might seem that the local advantage of selfishness can be eliminated by punishment, but punishment is itself a form of altruism. For instance, if you pay to put a criminal in jail, all law-abiding citizens benefit but you paid the cost. If someone else pays you to put the criminal in jail, this action costs those individuals something that other law-abiding citizens didn’t have to pay. Economists call this the higher-order public goods problem. Rewards and punishments that enforce good behavior are themselves forms of good behavior that are vulnerable to subversion from within.

Eldakar and Wilson first began thinking about selfish punishment on the basis of a study on humans, which indeed showed that the individuals most likely to cheat were also most likely to punish other cheaters. Similar examples appear to exist in non-human species, including worker bees that prevent other workers from laying eggs while laying a few of their own.

Is selfish punishment really so hypocritical in moral terms? According to Eldakar and Wilson, it can be looked at another way - as a division of labor. Altruists ‘pay’ the selfish punishers by allowing themselves to be exploited, while the selfish punishers return the favor with their second-order altruism. “That way, no one needs to pay the double cost required of an altruist who also punishes others,” says Eldakar. “If so, then the best groups might be those that include a few devils along with the angels.”
Published online on April 30, 2008
Proc. Natl. Acad. Sci. USA, 10.1073/pnas.0712173105

EVOLUTION
Selfishness as second-order altruism

Omar Tonsi Eldakar*,{dagger} and David Sloan Wilson*,{ddagger}

Departments of *Biological Sciences and {ddagger}Anthropology, Binghamton University, Binghamton, NY 13902-6000

Edited by Brian Skyrms, University of California, Irvine, CA, and approved March 6, 2008 (received for review December 22, 2007)

Abstract

Selfishness is seldom considered a group-beneficial strategy. In the typical evolutionary formulation, altruism benefits the group, selfishness undermines altruism, and the purpose of the model is to identify mechanisms, such as kinship or reciprocity, that enable altruism to evolve. Recent models have explored punishment as an important mechanism favoring the evolution of altruism, but punishment can be costly to the punisher, making it a form of second-order altruism. This model identifies a strategy called “selfish punisher” that involves behaving selfishly in first-order interactions and altruistically in second-order interactions by punishing other selfish individuals. Selfish punishers cause selfishness to be a self-limiting strategy, enabling altruists to coexist in a stable equilibrium. This polymorphism can be regarded as a division of labor, or mutualism, in which the benefits obtained by first-order selfishness help to “pay” for second-order altruism.

punishment | cooperation | mutualism | game theory | public goods

Is Happiness Having What You Want, Wanting What You Have, Or Both?

Posted in Psychology by huehueteotl on April 29th, 2008

Some argue that happiness is not having what you want, but wanting what you have. This maxim sounds reasonable enough, but can it be tested, and if so, is it true?

It turns out it can be tested. Texas Tech University psychologist Jeff Larsen and Amie McKibban of Wichita State University asked undergraduates to indicate whether they possessed 52 different material items, such as a car, a stereo or a bed.

Their results, which appear in the April issue of the Association for Psychological Science’s journal, Psychological Science, suggest that people can grow accustomed to their possessions and thereby derive less happiness from them.

They also suggest, however, that people can continue to want the things they have and that those who do so can achieve greater happiness.

“Simply having a bunch of things is not the key to happiness,” Larsen said. “Our data show that you also need to appreciate those things you have. It’s also important to keep your desire for things you don’t own in check.”

If the students owned a car, the researchers asked them to rate how much they wanted the car they had. If they didn’t have a car, they were asked to rate how much they wanted one.

Larsen and McKibban then calculated the extent to which people want what they have and have what they want. Their findings show that wanting what you have is not the same as having what you want. While people who have what they want tend to desire those items, the correlation between the two was far from perfect.

The researchers found that people who want more of what they have tend to be happier than those who want less of what they have. However, people who have more of what they want tend to be happier than those who have less of what they want.

Psychol Sci. 2008 Apr;19(4):371-7.
Is happiness having what you want, wanting what you have, or both?
Larsen JT, McKibban AR.

Texas Tech University.

Rabbi Hyman Schachtel (1954) proposed that “happiness is not having what you want, but wanting what you have” (p. 37). In two studies, we tested Schachtel’s maxim by asking participants whether or not they had and the extent to which they wanted each of 52 material items. To quantify how much people wanted what they had, we identified what they had and the extent to which they wanted those things. To quantify how much people had what they wanted, we identified how much they wanted and whether or not they had each item. Both variables accounted for unique variance in happiness. Moreover, the extent to which people wanted what they had partially mediated effects of gratitude and maximization on happiness, and the extent to which they had what they wanted partially mediated the effect of maximization. Results indicate that happiness is both wanting what you have and having what you want.