Certain toys being either facsimiles or representations of weapons or military equipment, have the power to condition human behaviour with the consequence that children who play with such toys become temporarily or permanently predisposed to violence. At least some violent behaviour in adults is traceable to the use of such toys whose elimination would therefore reduce the incidence of personal violence in society.
One in every three households in the USA has a video game console which plugs into TV set (70% of those with children between 8 and 15). Only seven of 47 home video games sampled in the US in 1991 did not involve violence. Out of 13 studies conducted in the USA on war toys, 12 have found harmful increases in both verbal and physical violence to other children. An additional 34 studies have been completed on violent cartoons on normal children in the US and six other countries. Thirty-one of these report at least some harmful effects.