A United Nations survey of children affected by the Asian tsunami has found that a significant number are still suffering psychological effects one year on.

The study by the children's agency, UNICEF, suggests that a third of children surveyed in Indonesia are pessimistic about the future, with many feeling that their lives are worse now than immediately after the tsunami.

UNICEF interviewed 1,600 child survivors of last December's tsunami in four countries.

John Budd of UNICEF in Indonesia said children there were still very fearful. More than two thirds of children surveyed in Indonesia had lost a close family member.