An Australian psychologist has aggregated the results of hundreds of studies on human behaviour and found 40 per cent can be put down to human genetics.
"We looked at a whole range of normal and problem behaviours, and what we found was that again and again, the genetic component of these behaviours tended to clump around the 40 per cent mark."
He said this definitively makes genetics the single most powerful influence on a person's behaviour over their lifetime.
"People need to keep working on their bad habits or behaviours if they want to change them, especially if they are predisposed to continue them," he said.
No surprise here -- with abilities, and preferences, behaviors join the trifecta of intangible things we know to be genetic.