Psychologists suggest that to cure cruelty

According to psychologists

1. 
   the instinct for aggression normally exists only during childhood
   
2. 
   if the child's aggressive instincts can't be eliminated, he'll revenge himself in his later life
   
3. 
   aggressiveness is an instinct which exists in all human beings
   
4. 
   the problem of cruelty is too difficult for parents to deal with on their own
   

2. 
   Psychologists suggest that to cure cruelty,
   

1. 
   first of all, the causes of it should be found out so that the best results can be obtained
   
2. 
   the child should be directed to spending his energy on what he is really interested in
   
3. 
   the child should be persuaded to give up his desire to hurt living things
   
4. 
   parents and teachers should work in cooperation with psychologists
   

3.