But many officials now believe the most effective deterrent is immediate and virtually certain punishment, especially if it concerns loss of a driver's license.

He said schoolchildren must also know they face certain punishment for either selling or using illegal drugs.

There are certain punishments which are not considered proper revenge.

And it will be, with vigilance, aggressive investigation and certain punishment.

The more swift and certain the punishment, the more effective it is in deterring criminal behavior.

Every authority on crime holds that swift and certain punishment is the only real deterrent.

Normally, these people are sentenced to a certain punishment so they can reflect and realize their sins.

The tougher approach has won praise from many experts on adolescence, who say youths must learn that unacceptable behavior means certain punishment.

But none of this is going to work without the credible threat of real and certain punishment.

No doubt such measures are necessary, but there must be the deterrent of certain punishment - meaning real jail time - as well.