This article in the Economist reports on research indicating that there may be a genetic basis for optimism. Scientists at the University of Essex in Britain took DNA samples from about 100 people and then tested the subjects by showing them "photographs that may be positive, negative or neutral in tone" and measuring their response. "Sure enough, gene-related variation caused a bias in attention towards positive and negative material," the article says. Results showed differences in the genes connected with serotonin among the subjects.
Put on a Happy Face -- If That's Something Your Genes Let You Do
Feb 28, 2009