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10 Sep 08

Deric Bownds' MindBlog: Watching the testosterone crash in anxious men who lose a contest.

Deric Bownd's Mindblog (the neuroblog that also plays you a piano recital every week) calls out an interesting paper in which social defeat drives down testosterone level in men. Not surprising, since social defeat in cichlids has been shown to produce massive changes in gene expression, size and color. But intriguing nevertheless. From the abstract:

Although theory suggests a link between social anxiety and social dominance, direct empirical evidence for this link is limited. The present experiment tested the hypothesis that socially anxious individuals, particularly men, would respond to a social-dominance threat by exhibiting decrements in their testosterone levels, an endocrinological change that typically reflects pronounced social submission in humans and other animals. Participants were randomly assigned to either win or lose a rigged face-to-face competition with a confederate. Although no zero-order relationship between social anxiety and level of testosterone was observed, testosterone levels showed a pronounced drop among socially anxious men who lost the competition.

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pebble pebbles

  • Watching the testosterone crash in anxious men who lose a contest.




    This work from Maner et al. makes a rather blunt point:

    Although theory suggests a link between social anxiety and social dominance, direct empirical evidence for this link is limited. The present experiment tested the hypothesis that socially anxious individuals, particularly men, would respond to a social-dominance threat by exhibiting decrements in their testosterone levels, an endocrinological change that typically reflects pronounced social submission in humans and other animals. Participants were randomly assigned to either win or lose a rigged face-to-face competition with a confederate. Although no zero-order relationship between social anxiety and level of testosterone was observed, testosterone levels showed a pronounced drop among socially anxious men who lost the competition.
22 Aug 08

Fish Tale Has DNA Hook - Students Find Bad Labels - NYTimes.com

    • Fish Tale Has DNA Hook: Students Find Bad Labels




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      Published: August 21, 2008





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      Many New York sushi restaurants and seafood markets are playing a game of bait and switch, say two high school students turned high-tech sleuths.

Coltrane Meets Bach, via Raphael Imbert

The wonderful music blog On an Overgrown Path alerted me to this splendid album by the greatly overlooked French saxophonist Raphael lmbert. Luminous, haunting stuff. Now if I can just figure out how to buy the album ...

For more, see On an Overgrown Path: http://www.overgrownpath.com/2008/06/recommended-for-coltrane-loving.html

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music Bach Raphael Imbert John Coltrane pebbles

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