The neuropsychologist James W. Prescott has performed 
   a startling cross-cultural statistical analysis of 400 
   preindustrual societies and found that cultures that lavish 
   physical affection on infants tend to be disinclined to 
   violence.  Even societies without noteable fondling of infants 
   develop nonviolent adults, provided sexual activity in 
   adolescents is not repressed.
Cultures with a predisposition for violence are 
   composed of individuals who have been deprived- during infancy 
   or adolescence- of the pleasures of the body.
Where infants are physically punished there tends to 
   be slavery, frequent killing, torture and mutilation, a 
   devotion to the inferiority of women, and a belief in one or 
   more supernatural beings who intervene in everyday life.  
   Where physical affection is encouraged, theft, organized 
   religion, and invidious displays of wealth are inconspicuous.
The likelihood of a society becoming 
   physically violent if it is physically affectionate towards 
   its infants and tolerant of premarital sexual behaviour is 2 
   percent.
The probability of this relationship occurring by 
   chance is one in 125,000.