That was a powerful disincentive to action.
Those pins became a powerful disincentive for a boss to place his hand on his secretary's shoulder.
The whispers of neighbors in a shame-sensitive society were another powerful disincentive.
"The fear that your neighbors will laugh at you" is a powerful disincentive, he said.
The prospect of parental disapproval is often one of the most powerful disincentives.
Social pressure can be a powerful disincentive.
The big rise in interest rates served as a powerful disincentive to most companies to issue new securities.
Today, authorities acknowledge that the system and its regulations have produced powerful disincentives to private investment.
Pulling in $70 a day, as several I know do, is a powerful disincentive to minimum-wage work.
There can be no more powerful disincentive than to have a shield that guarantees their hugely expensive programs will fail.