Why nature loves a southpaw.

The article discusses research on lateralisation, or dominance exhibited by one side of the brain and its influence on a human's or animal's preferred-asymmetric use of a body part or body feature to execute particular tasks. The possible benefits of such asymmetry are being tested. Researcher Richard Andrew is cited regarding language and lateralisation. Researcher Lesley Rogers is noted for brain research using chicks, the first to show lateralisation in animals.