Previous studies suggested that facial attractiveness perception can be increased with facial skin homogeneity improving; and human’s facial change detection increases along with facial skin homogeneity increases. However, it’s unknown whether a face can be perceived prettier than it did before while still being considered as physically the same. It is possible that these two kinds of cognitive-aesthetic processing may have separate mathematical functions in psychophysical studies. In other words, human’s facial attractiveness differentiation may be more sensitive than (...) facial change detection. In this current study, we explored the above questions. Using three types of psychophysical techniques to manipulate facial skin homogeneity, we measured how participants’ sensitivity to facial skin homogeneity and attractiveness change. Results showed a linear function curve for facial physical change detection and a logarithmic function curve was drawn in the forced-choice technique, which was the most sensitive one, indicating that participants can judge a face prettier than before without being aware of it has physically changed. Besides, two linear function curves were shown in the same/different technique and a rating technique. Taken together, this current study revealed that facial attractiveness can be enhanced and discriminated by improving facial skin homogeneity, without being realized by people with conscious awareness that the face has been changed. (shrink)

Skin as cover: the discursive effects of 'covering' metaphors on wound care practicesThis paper outlines a Foucauldian analysis of interactions between nurses and patients during wound care procedures in a burns unit. It explores the use of Kristeva's psychoanalytic concepts of abjection and the abject body to illuminate the emotional affects of wounds on nurse and patient. In this process, I identify how cultural metaphoric understandings about skin influence and organise the care of burns patients. Such analysis suggests (...) the import of the complete skin, the medical scientific control over the definition of this work, and the emotional forces that resist such control. (shrink)

Background and ObjectivesBecause of high skin cancer risks for young women, it is vital that effective interventions reach and influence this demographic. Visual social media platforms, like Instagram, are popular with young women and are an appropriate intervention site; yet, they also host competing images idealizing tan skin. The present study tested the ability of digital sun-safety interventions to affect self-control-related emotions and visual attention to subsequent tan-ideal images as well as sun-safety attitudes.MethodsWomen were recruited from a large (...) public Mid-Atlantic university in the United States. Participants were randomly assigned to view an appearance benefits intervention, a self-control emotions intervention, or a control message, each designed to look like an Instagram sponsored story. After self-reporting self-compassion and anticipated pride, participants then viewed seven pairs of Instagram posts featuring either tan or pale women while an eye tracker assessed visual attention. Finally, participants self-reported their responses to questions assessing sun-safety-related norms, efficacy, and attitudes.ResultsA mixed design analysis of covariance revealed that women who first viewed the appearance benefits intervention story spent less time visually fixated on Instagram images of tan women than did those who viewed the self-control emotions intervention or control message. Regressions also revealed interactions between the intervention conditions and feelings of anticipated pride on both visual attention and sun-safety attitudes.ConclusionSponsored stories on Instagram can promote sun-safety attitudes, depending on the emotional responses they generate. Additionally, sponsored interventions can affect subsequent visual attention. (shrink)

Researchers have long debated the extent to which an individual’s skin tone influences their perceived race. Brooks and Gwinn demonstrated that the race of surrounding faces can affect the perceived skin tone of a central target face without changing perceived racial typicality, suggesting that skin lightness makes a small contribution to judgments of race compared to morphological cues. However, the lack of a consistent light source may have undermined the reliability of skin tone cues, encouraging observers (...) to rely disproportionately on morphological cues instead. The current study addresses this concern by using 3D models of male faces with typically Black African or White European appearances that are illuminated by the same light source. Observers perceived target faces surrounded by White faces to have darker skin than those surrounded by Black faces, particularly for faces of intermediate lightness. However, when asked to judge racial typicality, a small assimilation effect was evident, with target faces perceived as more stereotypically White when surrounded by White than when surrounded by Black faces at intermediate levels of typicality. This evidence of assimilation effects for perceived racial typicality despite concurrent contrast effects on perceived skin lightness supports the previous conclusion that perceived skin lightness has little influence on judgments of racial typicality for racially ambiguous faces, even when lighting is consistent. (shrink)

Human skin detection is an essential phase in face detection and face recognition when using color images. Skin detection is very challenging because of the differences in illumination, differences in photos taken using an assortment of cameras with their own characteristics, range of skin colors due to different ethnicities, and other variations. Numerous methods have been used for human skin color detection, including the Gaussian model, rule-based methods, and artificial neural networks. In this article, we introduce (...) a novel technique of using the neural network to enhance the capabilities of skin detection. Several different entities were used as inputs of a neural network, and the pros and cons of different color spaces are discussed. Also, a vector was used as the input to the neural network that contains information from three different color spaces. The comparison of the proposed technique with existing methods in this domain illustrates the effectiveness and accuracy of the proposed approach. Tests were done on two databases, and the results show that the neural network has better precision and accuracy rate, as well as comparable recall and specificity, compared with other methods. (shrink)

Focusing on black communities in Africa, in this paper, I attempt an African bioethico-aesthetic deconstruction of the falsehood in colorist definitions of beauty purveyed by the migration of non-surgical cosmetics to Africa. I provide a novel ethical evaluation of the act of skin bleaching using principles of the African ethic of communion. I argue that skin bleaching is morally wrong to the extent that it promotes disharmonious relations and false identity in the beauty industry in Africa. Drawing on (...) scientific studies that link toxic ingredients in many skin-bleaching products to adverse health effects, I discuss the public health impact of bleaching cosmetics and other problems occasioned by their strategic expansion into African markets. I propose that there is an urgent need for a relational ethic of polycentric governance that would harmoniously regulate the production and distribution of cosmetic products across regions in order to avoid the exploitation of consumers in black African societies, while also protecting consumers’ right to make informed choices through education. (shrink)

Background: While advanced driver assistance technologies have the potential to increase safety, there is concern that driver inattention resulting from overreliance on these features may result in crashes. Driver monitoring technologies to assess a driver’s state may be one solution. The purpose of this study was to replicate and extend the research on physiological responses to common driving hazards and examine how these may differ based on driving experience.Methods: Learner and Licensed drivers viewed a Driving Hazard Perception Task while electrodermal (...) activity was measured. The task presented 30 Event and 30 Non-Event videos. A skin conductance response score was calculated for each participant based on the percentage of videos that elicited an SCR.Results: Analysis of the SCR score during Event videos revealed a medium effect of group differences, whereby Licensed drivers were more likely to have an SCR than Learner drivers. Interaction effects revealed Licensed drivers were more likely to have an SCR earlier in the Event videos compared to the end, and the Learner drivers were more likely to have an SCR earlier in the Non-Event videos compared to the end.Conclusion: Our results support the viability of using SCR during driving videos as a marker of hazard anticipation differing based on experience. The interaction effects may illustrate situational awareness in licensed drivers and deficiencies in sustained vigilance among learner drivers. The findings demand further examination if physiological measures are to be validated as a tool to inform driver potential performance in an increasingly automated driving environment. (shrink)

How might the psycho-social effects of chronic skin disease, its treatments (and discontents) be figuratively expressed in writing and painting? Does the art reveal common denominators in experience and representation? If so, how do we understand the cryptic language of these expressions? By examining the works of artists with chronic skin diseases—John Updike, Elizabeth Bishop, and Zelda Fitzgerald—some common features can be noted. Chronically broken skin can fracture the ego or self-perception, resulting in a disturbed body image, (...) which leads to personality disorders and co-morbid affective disorders such as anxiety and depression. The vertiginous feeling that results can be noted in the paradoxical characters, figures, and psyches portrayed in the works of these artists. This essay will examine the more specific ways in which artists disclose and/or conceal their experiences and the particular ways in which these manifest in their works. While certain nuances exist, the common denominators give us a starting point for developing an eczema aesthetic, a code for interpreting the ways in which artists’ experiences with skin disease manifest in their works. (shrink)

Sensation elicited by a skin stimulus was subjectively reported to feel stronger when followed by a stimulus to somatosensory cerebral cortex , even when C was delayed by up to 400 ms or more. This expands the potentiality for retroactive effects beyond that previously known as backward masking. It also demonstrates that the content of a sensory experience can be altered by another cerebral input introduced after the sensory signal arrives at the cortex. The long effective S-C intervals support (...) the thesis that a duration of cortical activity of up to 0.5 s is required before awareness of a sensory stimulus is developed. (shrink)

Trypophobia refers to the extreme negative reaction when viewing clusters of circular objects. Two major evolutionary frameworks have been proposed to account for trypophobic visual discomfort. The skin disease-avoidance (SD) framework proposes that trypophobia is an over-generalised response to stimuli resembling pathogen-related skin diseases. The dangerous animal (DA) framework posits that some dangerous organisms and trypophobic stimuli share similar visual characteristics. Here, we performed the first experimental manipulations which directly compare these two frameworks by superimposing trypophobic imagery onto (...) multiple image categories to evaluate changes in comfort. Participants from two countries (United States and Croatia) were evaluated on several measures, including general trypophobia levels, perceived vulnerability to disease, and generalised anxiety. Several analyses showed stronger changes in comfort in the human skin condition (hand, feet, and chest images) compared to the dangerous animal condition (snake and spider images). Furthermore, participants with higher levels of trypophobia showed significantly stronger changes in comfort in the skin condition than the dangerous animal condition, with comparable effects obtained across nationalities. Several variables entered as covariates failed to significantly account for this effect. The present work is the first to experimentally test both evolutionary frameworks of trypophobia, with results supporting the skin disease-avoidance framework. (shrink)

Just as the nation is imagined and produced through everyday rhetoric and maps and flags, it is also constructed on the skin, and through bodies, by different types of corporeal `flagging'. In this article, I use two examples of contemporary surgical procedures to explore these dynamics. Aesthetic surgeries on `white' subjects are not often interrogated for their racializing effects, but I use the concept of `flagging' to explore how these surgeries work in the UK to align `white' bodies with (...) a white nation. US media coverage of Iraq invasion veterans with prosthetic limbs circulates narratives of heroism and patriotism, and I explore how the apparent `visibility' of these limbs works to re-embed notions of the US as a transcendent Christian nation. In these two examples of corporeal modification, the nation is `flagged' on the skin, reiterating relationships of belonging that echo practical and conceptual links with property. Propertied belonging — possessive and constitutive — unfolds through bodies, producing whiteness not only as property itself, but also as unmarked, habitual terrain. (shrink)

ABSTRACT Darker skin correlates with reduced opportunities and negative health outcomes. Recent discoveries related to the genes associated with skin tone, and the historical use of cosmetics to conform to racist appearance standards, suggest effective skin‐lightening products may soon become available. This article examines whether medical interventions of this sort should be permitted, subsidized, or restricted, using Norman Daniels's framework for determining what justice requires in terms of protecting health. I argue that Daniels's expansive view of the (...) requirements of justice in meeting health needs offers some support for recognizing a societal obligation to provide this kind of ‘enhancement,’ in light of the strong connections between skin tone and health outcomes. On balance, however, Daniels's framework offers compelling reasons to reject insurance coverage for skin‐lightening medical interventions, including the likely ineffectiveness of such technologies in mitigating racial health disparities, and the danger that covering skin‐lightening enhancements would undermine public support for cooperative schemes that protect health. In fact, justice may require limiting access to these technologies because of their potential to exacerbate the negative effects of racism. (shrink)

Nietzsche's perspectivism can be seen as a two-leveled cure for dogmatism. On the one hand, perspectivism amounts to the dismissal of the metaphysical world and the acknowledgement of the esential incompleteness of all knowledge insofar as knowledge is only and always perspectival. On the other hand, perspectivism is an affirmation of the central role the affects play in all interpretations of the world; consequently, it presents itself as a summary rejection of the notion of disinterested contemplation or knowledge. Nietzsche's theory (...) of interpretation results in a transcendental-experimental philosophy able to liberate humankind from the stagnating, destructive effects of dogmatism. A perspectival account of knowledge implies not only an aesthetic aspect, but also a therapeutic one. (shrink)

This book presents an alternative to conventional ideas about the evolution of the human intellect.

Poor health is not inherently a part of Black Americans’ bodies; poor health is not in our DNA. But as Linda Villarosa says in Under the Skin “something about being Black has led to the documented poor health of Black Americans.”1 Like many other scholars of Black health have said, Villarosa proposes, and evidence supports, that “the something is racism.”2 Villarosa attributes Black people’s generally inferior health outcomes in areas like pregnancy and birth, pain care, and cardiology to racism (...) and not a lack of social resources such as money, education, and access to healthcare. Although not always explicitly stated in her text, the stories Villarosa uses to illustrate racism’s effects on health also demonstrate racism’s influence on who has access to the social resources that are needed to maintain health and treat illnesses. Villarosa is right that more education and more income cannot de facto give Black people better health. At the same time, we cannot ignore that although racism is the force, education, money, housing, and access to healthcare are the means by which racism adversely affects health. Education and other social goods only fail to confer better health to Black people because racism serves as a roadblock. (shrink)

Using data from the National Survey of Black Americans, this study examines the way in which gender socially constructs the importance of skin tone for evaluations of self-worth and self-competence. Skin tone has negative effects on both self-esteem and self-efficacy but operates in different domains of the self for men and for women. Skin color is an important predictor of self-esteem for Black women but not Black men. And color predicts self-efficacy for Black men but not Black (...) women. This pattern conforms to traditional gendered expectations of masculinity and femininity. Moreover, there are conditions of success that allow women to escape the effects of colorism. The impact of skin tone on self-esteem was much weaker for women from higher social class. Those who had lower self-esteem scores were dark-skinned women from working classes and dark-skinned women who were judged unattractive. (shrink)

This article uses two national survey data sets to analyze the effects of skin color on life outcomes for African American and Mexican American women. Using a historical framework of European colonialism and slavery, this article explains how skin color hierarchies were established and are maintained. The concept of social capital is used to explain how beauty, defined through light skin, works as capital and as a stratifying agent for women on the dimensions of education, income, and (...) spousal status. The analysis shows that light skin predicts higher educational attainment for both groups of women. Light skin directly predicts higher personal earnings for African American women and indirectly affects personal earnings for Mexican American women. Light skin predicts higher spousal status for African American women but not for Mexican American women. (shrink)

The role of prefrontal cortex (PFC) in influencing creative thinking has been investigated by many researchers who, while succeeding in proving an effective involvement of PFC, reported suggestive but sometimes conflicting results. In order to better understand the relationships between creative thinking and brain activation in a more specific area of the PFC, we explored the role of dorsolateral PFC. We devised an experimental protocol using transcranial direct-current stimulation (tDCS). The study was based on a 3 (kind of stimulation: anodal (...) vs. cathodal vs. sham) X 2 (priming: divergent vs. convergent) design. Forty-five healthy adults were randomly assigned to one stimulation condition. Participants’ creativity skills were assessed using the Product Improvement subtest from the Torrance Tests of Creative Thinking. After 20 minutes of tDCS stimulation, participants were presented with visual images of common objects. Half of the participants were instructed to visualize themselves using the object in an unusual way (divergent priming), whereas the other half were asked to visualize themselves while using the object in a common way (convergent priming). Priming was aimed at inducing participants to adopt different attitudes toward the creative task. Afterwards, participants were asked to describe all of the possible uses of the objects that were presented. Participants’ physiological activation was recorded using a biofeedback equipment. Results showed a significant effect of anodal stimulation that enhanced creative performance, but only after divergent priming. Participants showed lower skin temperature values after cathodal stimulation, a findings which is coherent with studies reporting that, when a task is not creative or creative thinking is not prompted, people show lower levels of arousal. The involvement of dorsolateral PFC in creativity has been supported, presumably in association to shift of attention modulated by priming. (shrink)

ObjectiveStress can play a role in the onset and exacerbation of psoriasis. Psychological interventions to reduce stress have been shown to improve psychological and psoriasis-related outcomes. This pilot randomised study investigated the feasibility of a brief interaction with a Paro robot to reduce stress and improve skin parameters, after a stressor, in patients with psoriasis.MethodsAround 25 patients with psoriasis participated in a laboratory stress task, before being randomised to either interact with a Paro robot or sit quietly for 30 (...) min. Raman spectroscopy and trans-epidermal water loss were measured at baseline, after the stressor and after the intervention as indexes of acute skin changes. Psychological variables, including self-reported stress and affect, were also measured at the three time-points.ResultsNo statistically significant differences between the two conditions were found for any of the outcomes measured. However, effect sizes suggest significance could be possible with a larger sample size. Changes in the psychological and Raman spectroscopy outcomes across the experimental session were found, indicating the feasibility of the procedures.ConclusionThis pilot study showed that a brief interaction with a Paro robot was a feasible intervention for patients with psoriasis, but future trials should broaden the inclusion criteria to try to increase recruitment rates. Studying people who are highly stressed, depressed or who are stress-responders may increase the power of the intervention to show effects using a longer-term intervention. (shrink)

Retinoids are low molecular weight, lipophilic derivatives of vitamin A which have a profound effect upon the development of a diverse array of animals. Here, I review these effects on Invertebrates: a colonial hydroid, a colonial ascidian, and Vertebrates: the regenerating amphibian limb, the developing chick limb bud, the regenerating amphibian tail, the anteroposterior axis of the early embryo, the developing chick embryo skin. There is a striking uniformity of effect of retinoids on pattern formation when applied (...) to these diverse organisms. The majority react by being posteriorized in their development, although additional effects can also be seen. Several hypotheses which can explain these results are discussed along with the deduction that they lead to: retinoids may be components of a universal developmental mechanism or they may simply act in a similar way to alter a universal developmental mechanism. In either case the experimental analysis of retinoid effects on development has important implications for the evolution of developmental mechanisms. (shrink)

We suggest that human culture exhibits key Darwinian evolutionary properties, and argue that the structure of a science of cultural evolution should share fundamental features with the structure of the science of biological evolution. This latter claim is tested by outlining the methods and approaches employed by the principal subdisciplines of evolutionary biology and assessing whether there is an existing or potential corresponding approach to the study of cultural evolution. Existing approaches within anthropology and archaeology demonstrate a good match with (...) the macroevolutionary methods of systematics, paleobiology, and biogeography, whereas mathematical models derived from population genetics have been successfully developed to study cultural microevolution. Much potential exists for experimental simulations and field studies of cultural microevolution, where there are opportunities to borrow further methods and hypotheses from biology. Potential also exists for the cultural equivalent of molecular genetics in “social cognitive neuroscience,” although many fundamental issues have yet to be resolved. It is argued that studying culture within a unifying evolutionary framework has the potential to integrate a number of separate disciplines within the social sciences. (shrink)

The human primate is a deeply cultural species, our cognition being shaped by culture, and cultural transmission amounting to an “epidemic of mental representations” (Sperber, 1996). The architecture of this aspect of human cognition has been shaped by our evolutionary past in ways that we can now begin to discern through comparative studies of other primates. Processes of social learning (learning from others) are important for cognitive science to understand because they are cognitively complex and take many interrelated forms; they (...) shape traditions, cultures and nonsocial aspects of cognition; and in turn they may be shaped by their cultural context. The study of primate social learning and culture has in recent years enjoyed a renaissance, providing a wealth of new findings, key aspects of which are reviewed. The focus is on cognitive issues, including learning about the consequences, sequential structure and hierarchical organization of actions; relating stored knowledge to the assimilation of new social knowledge; feedback guiding the construction of imitations; conceptual grasp of imitation; and the reciprocal relationship between social learning and culture. (shrink)

Heyes sets out an intriguing theory but it raises more questions than compelling answers concerning culturally shaped cognition. I set out what I see as the most pressing questions, ranging over the book's early chapters concerning the structure of the theory, to two of Heyes’ four exemplar cognitive domains, selective social learning and imitation.

There is extensive evidence that adults, children, and some non-human species, represent routine events in the form of hierarchically structured 'action scripts,' and show superior recall and imitation of information at relatively high-levels of this hierarchy. Here we investigate the hypothesis that a 'hierarchical bias' operates in human cultural transmission, acting to impose a hierarchical structure onto descriptions of everyday events, and to increasingly describe those events in terms of higher hierarchical levels. Descriptions of three everyday events expressed entirely in (...) terms of basic low-level actions were transmitted along ten chains each containing four adult human participants. It was found that the proportion of low-level information showed a significant linear decrease with transmission generation, while the proportions of medium- and high-level information showed significant linear increases, consistent with the operation of a hierarchical bias. The findings additionally provide support for script theory in general, and are discussed in relation to hierarchical imitation in non-human primates. (shrink)