The image of Mohammed al-Dura, the 12-year-old Gaza boy shot dead as his father vainly tried to protect him from Israeli gunfire at the beginning of the second intifada, is seared on the Palestinian consciousness. To many Palestinian adults it symbolises Israeli indifference to the lives of their children. But psychologists say that to many children its principal impact is to see a father who cannot protect his son.
With that - and humiliations such as Israeli soldiers beating Palestinian men in front of their children - has come a collapse in respect for the regular systems of authority.
The perpetual killing has also drawn many children into the cult of the "martyr" and led them to expect an early death.
Thabet said the traumatising of children was having a profound effect on Gaza's future. The children he studied in the early 1990s are now adults. "They become fighters. I warned about this 15 years ago, that in 15 years these traumatised children will be more aggressive, they will want to fight, there will be more violence in the community. You saw it in the factional fighting in Gaza in 2007," he said.
"So now we will have another generation of more aggressive behaviour. They will go to more extremes because they have no future. This is a problem. I've been warning people of this but nobody was listening. It's a cycle of aggression.
"Children see their parents killed in front of them. What do you expect?" -- © Guardian News & Media 2009