Genome scan for the major dimensions of personality
An association study of 4000 people with an almost equal number of replicates uncovered genes associated with each of the 5 major personality dimensions. Most of the associated genes are linked to various neurological disorders, so they seem to be in the right territory, though it would not surprise me if personality is linked in to a lot of other non-psychologicl traits. The problem of course is that so little of the variance (~1%) is being explained.
