A new study conducted by the University of Pennsylvania observed the environment in which kids were raised. They stated that ‘less warmth in parenting and increased harshness at home made the kids more aggressive, turning them into individuals who lacked empathy’.
227 pairs of identical twins were studied by the Penn psychologist Rebecca Waller, who determined how different parenting styles impacted their social behavior. The twin that received stricter treatment and less warmth showed greater aggression and lack of social skills.
Hyde, an associate professor in Michigan’s Department of Psychology, said, “The study convincingly shows that parenting — and not just genes — contributes to the development of risky callous-unemotional traits. Because identical twins have the same DNA, we can be more sure that the differences in parenting the twins received affects the development of these traits.”
While there are certain parameters that need to be studied before coming to a definite conclusion (with regard to households with single child or two kids), it does give an insight into the right kind of treatment that can lead to positive behavior.