2. Does corporal punishment deter? There is a widespread tendency to exaggerate its deterrent effect and evidence that it does not deter. Does it reform? Only those who need reform the least. Is is suitable retribution? Only if it is suitable to be physically harsh with those who have been physically harmful. Corporal punishment may be effective when administered by someone in a sustained, predictable and loving relationship with the person punished. But the question remains, is it really necessary?