Subjects
identified the left-hand image as a woman and the right-hand one as a man. Yet
the two images differ only in skin tone. Study by Richard Russell, Sinha
Laboratory for Vision Research, MIT.
Skin
color differs by sex: women are fairer and men browner and ruddier. Women also
exhibit a greater contrast in luminosity between their facial skin and their
lip and eye areas. These differences arise from differing concentrations of
three skin pigments: melanin (brown); hemoglobin (red); and carotene (yellow).
The cause is ultimately hormonal, as shown by studies on castrated and
ovariectomized adults, on boys and girls during puberty, and on digit ratios
(Edwards and Duntley, 1939; Edwards and Duntley, 1949; Edwards et al., 1941;
Frost, 2010; Kalla and Tiwari, 1970; Manning et al., 2004; Mesa, 1983; Omoto,1965; Porcheron et al., 2013). Women are fairer than men in all human
populations. The difference is greatest in people of medium color and least in very
dark- or very fair-skinned people, apparently because of "floor" or
"ceiling" effects (Frost, 2007).
This
sex difference is used by the human mind for sex recognition. In fact, it's
more important for this purpose than other visual cues, like face shape. When
subjects are shown an image of a human face, they can tell whether it is male
or female even if blurred and differing only in hue and luminosity. Hue
provides a "fast channel" for sex recognition. If the facial image is
too far away or the lighting too dim, the mind switches to the "slow
channel" and relies on luminosity (Bruce and Langton, 1994; Dupuis-Roy et al., 2009; Frost, 2011; Hill et al., 1995; Russell and Sinha, 2007; Russell et
al., 2006; Tarr et al., 2001; Tarr et al., 2002).
Age differences
Skin
color also differs by age. It can be used to distinguish younger from older
women, since the contrast in luminosity between facial skin and the lip/eye
areas decreases with age (Porcheron et al., 2013). It can also be used to
recognize infants. All humans are born with very little melanin, and the
resulting pinkish-white skin is often remarked upon in different cultures.
This
is especially so where adults are normally dark-skinned, in striking contrast
to newborns. In Kenya, the latter are often called mzungu ('European' in Swahili), and a new mother may ask her
neighbors to come and see her mzungu
(Walentowitz, 2008). Among the Tuareg, children are said to be whitened by the
freshness and moisture of the womb (Walentowitz, 2008). The situation in other
African peoples is summarized by a French anthropologist: "There is a
rather widespread concept in Black Africa, according to which human beings,
before 'coming' into this world, dwell in heaven, where they are white. For,
heaven itself is white and all the beings dwelling there are also white.
Therefore the whiter a child is at birth, the more splendid it is" (Zahan,
1974, p. 385). A Belgian anthropologist makes the same point: "black is
thus the color of maturity [...] White on the other hand is a sign of the
before-life and the after-life: the African newborn is light-skinned and the
color of mourning is white kaolin" (Maertens, 1978, p. 41).
This
infant/adult difference is evolutionarily old, being present in nonhuman
primates. In langurs, baboons, and macaques, the newborn's skin is pink while
the adult's is black. This visual cue not only helps adults to locate a wayward
infant but also seems to induce a desire to defend and provide care (Jay, 1962). Humans may respond similarly to the lighter color of infants and women.
This would be consistent with a tendency by the adult female body to mimic the
newborn body in other ways: face shape; pitch of voice; amount of body hair;
texture and pliability of the skin; etc. Over time, women may have come to
resemble this 'infant schema' because it is the one that can best reduce
aggressiveness in a male partner and induce him to assume a provider role.
The sun-tanning
fad: An aesthetic revolution
The
sex-specific aspects of skin color have influenced the development of cosmetics
in many cultures. Even in ancient times, women would use makeup to increase the
natural contrast in luminosity between their facial skin and their lip/eye
areas (Russell, 2009; Russell, 2010). They would also make their naturally fair
complexion even fairer by avoiding the sun and applying white powders or
bleaching agents.
This
feminine aesthetic changed radically in the 1920s with the sudden popularity of
sun-tanning throughout the Western world, initially as a health fad. Tanned
skin then entered women's fashion and became part of the flapper image, along
with bobbed hair, broad shoulders, a relatively flat chest, narrow hips, and
long legs. This fashion image was intended to be hermaphroditic, the aim being
to energize the erotic appeal of the female body by masculinizing some of its
key features (Bard, 1998; Segrave, 2005).
Has
the tanning fad un-gendered skin color? Not wholly, to judge by the above
studies on sex recognition. There still seems to be a tendency to prefer a
lighter skin tone for women than for men. This was the conclusion of a recent
study on how people perceive two skin pigments: melanin (brown) and carotene
(yellow). When shown facial images with varying concentrations of melanin and
carotene, the subjects had a greater preference for carotene than for melanin.
This preference was stronger for female faces than for male faces, irrespective
of the observer's sex. Nonetheless, for both male and female faces, the
preferred skin color was much darker than it would have been a century ago
(Lefevre and Perrett, 2014).
Again,
this aesthetic norm has darkened only in the Western world. The tanned look had
some popularity among Japanese women in the postwar era up to the 1970s, but it
has since gone out of fashion (Ashikari, 2005). It never did catch on elsewhere
in Asia (Li et al., 2008). In North America and Europe, the tanned look seems
much more persistent, and this persistence suggests that it is locked into
place by something else in our cultural environment.
Such
as ...? One factor may be the conscious effort to promote images of
dark-skinned people in advertising and, more generally, in popular culture.
Another factor may be a half-conscious desire in popular culture for more
aggressive, "harder" forms of eroticism. This is something that fair
skin is less effective at delivering, having been originally part of the infant
schema and thus less conducive to that kind of emotional response.
References
Ashikari,
M. (2005). Cultivating Japanese whiteness. The 'whitening' cosmetics boom and
the Japanese identity, Journal of
Material Culture, 10, 73-91.
Bard, C. (1998). Les Garçonnes. Modes et fantasmes des Années
folles, Flammarion, Paris.
Bruce,
V., and S. Langton. (1994). The use of pigmentation and shading information in
recognising the sex and identities of faces, Perception, 23(7),
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Dupuis-Roy,
N., I. Fortin, D. Fiset, and F. Gosselin. (2009). Uncovering gender
discrimination cues in a realistic setting, Journal
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http://journalofvision.org/9/2/10/
Edwards,
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Tanning for women may be questionable and recent, but men in white societies have historically been expected to be tan if they were upper class. It was a sign that you spent time outdoors hunting, in athletics, or in military enterprise. Greeks saw a man with untanned skin as one who spent all his time indoors with women, i.e., effeminate, or a slave who had to spend all day in labor (often indoors). This is explicit in many passages, including in Plato's Republic. Ancient Egyptians had a similar convention in how they represented the Pharaoh, nobles, etc., vs. the women. Similarly in recent times having tan skin for a man meant you are someone who spends his time as a sportsman, yachting, etc., that you were upper class.
ReplyDeleteThere is an opposite claim made by the middle and lower middle classes who don't know about this very long historical trend. Insecure about their social position, and wary lest they should be confused with the lower classes that labored in agriculture, the merchant middle and lower middle class in the Near East, southeast Asia, and parts of Europe as well, assiduously avoided (and avoid) tanning. But from an aristocratic point of view the males of these classes are unmanly.
America's racial politics has made tanning begin to go out of favor among whites for reasons hinted at in this post.
In Brazil tanning is very popular except for those who are racially borderline and who would become too dark in the sun or who have facial features that, combined with a tan, would show them to be nonwhite. But the upper class goes to the beach and tans and having an untanned body is taken to mean, again, that you are the sort of person to spend all day indoors.
ReplyDeleteI have seen Scandinavians in Rio whose skin turns more brown than some of the locals'. No one can confuse them for nonwhites though. It is interesting the extent to which skin color is not reliable for predicting race though; these Scandis were a very deep golden brown. Japanese turn an almost purplish black when they tan.
Scandinavians look more as slavic people, blonde and relativelly good to be tanned.
ReplyDeleteSeems, ''atlantic euro genes'', northern Portugal, passing by all Britain island until Estonia, tend to have more sensible, pale and or reddish skin than slavic and nordic blondes, probably because in these areas we have more people with recessive ''red haired genes'' or less ''asiatic genes'' reduce skin paleness.
My thoughts on sun tanning among women:
ReplyDeletehttp://occamsrazormag.wordpress.com/2013/07/27/are-women-who-tan-sluts/
..
I want to thank Peter Frost for his posts and his research. It is quite enlightening and interesting. Thank you for your time and effort. I also thank the commenters for their input as well.
ReplyDeleteThe world is a marvelous place. My only wish is that humans would respect the Natural Order of things. It is called respect. Respect for what God as done--and it is ALL Good.
@LindsayWheeler - "It is quite enlightening"
ReplyDeleteI see what you did there.
In the example image the bleaching version on the left removes allot of making the nose eye sockets and other features look shallower. So you may not be demonstrating the effects of pigmentation on real faces so much as the effects of removing shading information from 2d images. To remove this confounding factor you may have to do 3d renderings of differently pigmented faces preferably give a stereoscopic presentation. rather that manipulating the contrast on averaged photos.
ReplyDelete"these Scandis were a very deep golden brown"
ReplyDeleteI get like that. I wonder if it's connected to Amerindian coloring somehow?
"Anonymous Anonymous said...
ReplyDeleteTanning for women may be questionable and recent, but men in white societies have historically been expected to be tan if they were upper class. It was a sign that you spent time outdoors hunting, in athletics, or in military enterprise. Greeks saw a man with untanned skin as one who spent all his time indoors with women, i.e., effeminate, or a slave who had to...."
Complete NONSENSE. Historically those who were pale were upper class and the slaves and workers were tanned. The person posting the above is obviously from the darker lower classes, no doubt a 'minority' and insecure about his slave, lower class background.
The Gods were thought to be often Red head and pale. Thor was a pale Red head. Paleness is associated with ethereal spirituality originating from brightness of the sun, stars and the association of light with safety, security and thus 'good' while the darkness with unknown, fear, danger and thus 'bad'
ReplyDelete