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"What is it that makes a face look beautiful? What are the differences between very attractive and less appealing faces? For every historical period and every human culture, people have always had their own ideal of beauty. But this ideal has never been constant and is still subject to changes. In our research project we adopted an empirical approach and created prototypes for unattractive and attractive faces for each sex by using the morphing technique. For example, the prototype for an unattractive face ("unsexy face") was created by blending together four faces that had previously been rated as very unattractive. The "sexy face" was created by blending together four of the most attractive faces, respectively (see report). In order to find out the characteristic differences between attractive and unattractive faces, we presented pairs of one "sexy" and one "unsexy" image for both sexes to test subjects. The task was to report which facial features were perceived to be different between the two faces. For the results see the list below. "

"In 1990, Thomas J. Bouchard, Jr. and his colleagues at the University of Minnesota published a striking finding: About 70 percent of the variance in IQ found in their particular sample of identical twins was found to be associated with genetic variation. Furthermore, identical twins reared apart were eerily similar to identical twins reared together on various measures of personality, occupational and leisure-time interests, and social attitudes. Bouchard's study, along with many others, has painted a consistent picture: Genes matter. The studies say nothing about how they matter, or which genes matter, but they show quite convincingly that they indeed do matter. Genes vary within any group of people (even among the inhabitants of middle-class in Western society), and this variation contributes to variations in these people's behaviors. Let's be clear: Twin studies have received much criticism. Even though the proliferation of advanced statistical techniques (such as structural equation modeling) and the implementation of additional controls have allayed some of the concerns, they haven't allayed all of the them. Even so, the findings from twin studies should not be understated; it counters many a prevailing belief that we are born into this world as blank slates, completely at the mercy of the external environment. Because our psychological characteristics reflect the physical structures of our brains and because our genes contribute to those physical structures, there are unlikely to be any psychological characteristics that are completely unaffected by our DNA. "

""The kernel, the soul - let us go further and say the substance, the bulk, the actual and valuable material of all human utterances - is plagiarism." The combinatorial nature of creativity is something I think about a great deal, so this 1903 letter Mark Twain wrote to his friend Helen Keller, found in Mark Twain's Letters, Vol. 2 of 2, makes me nod with the manic indefatigability of a dashboard bobble-head dog. In this excerpt, Twain addresses some plagiarism charges that had been made against Keller some 11 years prior, when her short story "The Frost King" was found to be strikingly similar to Margaret Canby's "Frost Fairies." Heller was acquitted after an investigation, but the incident stuck with Twain and prompted him to pen the following passionate words more than a decade later, which articulate just about everything I believe to be true of combinatorial creativity and the myth of originality: Oh, dear me, how unspeakably funny and owlishly idiotic and grotesque was that 'plagiarism' farce! As if there was much of anything in any human utterance, oral or written, except plagiarism! The kernel, the soul - let us go further and say the substance, the bulk, the actual and valuable material of all human utterances - is plagiarism. For substantially all ideas are second-hand, consciously and unconsciously drawn from a million outside sources, and daily use by the garnerer with a pride and satisfaction born of the superstition that he originated them; whereas there is not a rag of originality about them anywhere except the little discoloration they get from his mental and moral calibre and his temperament, and which is revealed in characteristics of phrasing. When a great orator makes a great speech you are listening to ten centuries and ten thousand men - but we call it his speech, and really some exceedingly small portion of it is his. But not enough to signify. It is merely a Waterloo. It is Wellington's battle, in some de

"When reports emerged 30 years ago that young gay men were suffering from rare forms of pneumonia and cancer, public health investigators scrambled to understand what appeared to be a deadly immune disorder: What were the symptoms? Who was most susceptible? What kinds of infections were markers of the disease? They were seeking the epidemiologist's most essential tool - an accurate case definition, a set of criteria that simultaneously include people with the illness and exclude those without it. With AIDS, investigators soon recognized that injection-drug users, hemophiliacs and other demographic groups were also at risk, and the case definition evolved over time to incorporate lab evidence of immune dysfunction and other refinements based on scientific advances. "If you recognize something is happening, you need a case definition so you can count it," said Andrew Moss, an emeritus professor of epidemiology at the University of California, San Francisco, and an early AIDS investigator. "You need to know whether the numbers are going up or down, or whether treatment and prevention work. And if you have a bad case definition, then it's very difficult to figure out what's going on." Once a disease can be diagnosed reliably through lab tests, creating an accurate case definition becomes easier. But when an ailment has no known cause and its symptoms are subjective - as with chronic fatigue syndrome, fibromyalgia and other diseases whose characteristics and even existence have been contested - competing case definitions are almost inevitable. Now a new study of chronic fatigue syndrome has highlighted how competing case definitions can lead to an epidemiologic "Rashomon" - what you see depends on who's doing the looking - and has stoked a fierce debate among researchers and patient advocates on both sides of the Atlantic. "

"FaceResearch.org allows you to participate in short online psychology experiments looking at the traits people find attractive in faces and voices. Register to participate in experiments if this is your first time at FaceResearch.org or login if you have been here before. Make your own average faces with our interactive demos! In addition to participating in facial attractiveness experiments, you can also complete lifestyle and personality questionnaires about characteristics that may be associated with face and voice preferences and see how you compare to others. We post all our study results after we have finished collecting data. You can also learn about our computer-graphic technology and read about some of the findings of our previous studies."