Psychologists are constantly wonder what makes people age they become more boring and pessimistic. British scientists 11 years investigated the health status of people living alone or with family relationships.
During analysis, the scientists were able to establish that the constant quarrels within the family, destroy the optimism in relationships. It turns optimistic people in these pessimists.
Scientists had 11 years of watching family relations volunteers, and at the end of the study conducted testing that evaluated the emotional response of people. With frequent quarrels volunteers almost did not respond to positive stimuli studies.