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Cosmetics: are they useful or do they just make us feel good?

July 22, 2011 James V. Kohl 0

“…the Darwinist approach to attraction – beautiful faces and well-formed bodies are important biological indicators of a person’s value as a sexual partner.”

A Darwinist approach would be biologically based and modeled in other species. In other species, mate preferences develop via associations with social odors: olfactory/pheromonal cues of reproductive fitness. Food odors and social odors activate the same evolved neurophysiological mechanisms in all mammals. How might we have come to prefer beautiful faces and well-formed bodies if not via their association with human scent signatures?

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Avian 'Axe effect' attracts attention of females and males

July 20, 2011 James V. Kohl 0

Body-spray commercials feature young men dousing themselves with fragrance and – voila – hordes of beautiful women or even bands of angels descend upon them. Male birds deploy a similar tactic when they release their cologne – or preen oil – secreted from a gland at the base of their tail.

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Dogs and humans: Then and now

March 15, 2011 James V. Kohl 0

Comparisons of the olfactory abilities of dogs to humans fail to mention our increased ability to process olfactory/pheromonal input. Bigger brains allow better processing.

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Study design| Psychophysics experiment | Perspective on conditioning

March 6, 2011 James V. Kohl 0

Psychophysics experiments incorporate obvious generalizations that are due to very low biological variability across different species of organisms. Obviously, one need not reinvent the wheel when common sense dictates that olfaction is a common sense across all mammalian species that sexually reproduce, and that pheromones influence the behavior of all these species.

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Adrenarche and odor preferences

March 2, 2011 James V. Kohl 0

Preferences for the pheromones of others do not suddenly appear with pubertal changes in hormones. They develop from birth, and some interesting changes in our preferences occur at the time we begin to produce pheromones.