Nature or Nurture?-1 The issue of whether personality development is influenced by gene more compared with be affected by nurtured environment or not is contentious. Since personality traits and their cause are virtually impossible to quantify, it is difficult to analysis the relation between personality development and environment factor. In this essay, I would like to argue that environment factors have greater influence on ones characteristics. My point of views is as follows. According to some parents who have identical, there are have different views toward their twins’ personalities. Some said their identical twins have similar personality and preference while some observers that their twins have opposite characteristics with almost exact same look. As a result, we can figure even identical twins that have with the same genes might still be attributed distinct traits, not to mention that parents opinions or survey result of twins is objective or not. Therefore, I personal believe gene is not the main factor to affect human’s personality.