Jan 26, 2007

Get out your spell-checker: altruism, autism and blue devils

Activation of brain region predicts altruism: But what does that brain region have to do with autism? No. That's not a typo. Scientists from Duke have linked the two in their research.

Many biologists have asked how altruism could even evolve given that it requires self interests to be subverted in the interests of others. Kin selection, reciprocal altruism and selfish genes, i.e. green beard effect, were all notions that arose to explain altruism. But Duke researchers looked for insights with a proximate explanation, rather than a functional one. They investigated what happens in the brain during situations where one had to choose between altruistic and non-altruistic responses.

"According to the researchers, the results suggest that altruistic behavior may originate from how people view the world rather than how they act in it."

(Ummmm. Like this trait just suddenly cropped up in Homo sapiens See my prior posts on empathy and primate fairness for more)

" 'We believe that the ability to perceive other people's actions as meaningful is critical for altruism,' Tankersley said.

The scientists suggest that studying the brain systems that allow people to see the world as a series of meaningful interactions may ultimately help further understanding of disorders, such as autism or antisocial behavior, that are characterized by deficits in interpersonal interactions.

The researchers are now exploring ways to study the development of this brain region early in life, Tankersley said, adding that such information may help determine how the tendencies toward altruism are established. "


Compare this most recent study to those of another team at Duke who claims to study altruism autism by experimenting on primates. In short, monkeys in full-body restraint would fore go a sip of flavored juice to look at photos of fertile female monkeys or socially dominant monkeys. (perhaps they are just desperate for companionship?) When the results of this study were first released, the popular media drew some analogies to porn, gossip magazines or interest in celebrities. The investigators, however, claimed it provided important insights into autism.

While I acknowledge that low-ranking individuals are wise to keep an eye on those with higher-rank, and males are wise to keep an eye on fertile females (evolutionarily speaking), I find the whole thing dubious.
  1. Field primatologists have known for decades that monkeys prefer high-ranking group members – without ever keeping thirsty monkeys in cages. In fact, the social preference for or avoidance of an individual is part of how scientists assess status in monkey groups to begin with. What was the question again? Are popular monkeys preferred over unpopular ones? Who's on first?

  2. Does any evolutionary biologist doubt that males take risks or accept costs for access to fertile females? Sexual selection or intrasexual competition ring a bell with anyone here? Would any person doubt this based on his or her own experience or plain old common sense?


My point here is that while noninvasive studies in human subjects are underway, primates are suffering in the lab - for naught. It's criminal.

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