section_path: Causes and achievement methods/Spillover
section_name: Spillover
paragraph_text: Spillover
  
  A person's level of subjective well-being is determined by many different factors and social influences prove to be a strong one. Results from the famous Framingham Heart Study indicate that friends three degrees of separation away (that is, friends of friends of friends) can affect a person's happiness. From abstract: "A friend who lives within a mile (about 1.6 km) and who becomes happy increases the probability that a person is happy by 25%."