Wisdom really does develop with increasing age, and it's partly because the brain slows down, scientists say.

Elderly brains are less ruled by emotions and impulse than those of hot-headed youngsters.

As a result, thoughtfulness and wise thinking is allowed to flourish, research suggests.

The conclusion is based on a series of studies on 3,000 Californians aged between 60 and 100.

Reporting on the findings at the Royal College of Psychiatrists' International Congress in Edinburgh, Professor Dilip Jeste, from the University of California, said wisdom was a unique human mix of intelligence and spirituality. He believes it may be hard-wired into the human brain as an evolutionary tool to extend lifespan.

Prof Jeste said older people were less affected by the brain chemical dopamine, which helps signals pass between neurons.

More information: www.independent.ie