If parenting is found to have little influence on how you turn out, will you then conclude that there is nothing inherant in you as an individual? Your degree of individuality is already apparent, so not altered by discovering whether its source is home environment or something else.If you are the same as people overseas and you attribute your characteristics to parental behaviour, then you must conclude your parents must have been similar. You still haven't distinguished yourself. To distinguish yourself based on connection to those two people, even if they are similar to other parents, is no different from distinguishing yourself from others similar to you. Why the extra step?