All people in the world are different in their own individual way. It is the behavior of each person that makes up their identity. It all comes down to what makes up who a person is and what characteristics they have that builds to develop the personality and the inner self which creates an identity for the person. This behavior is shaped by either the biological factors or environmental factors that create a sense of self, or who a person truly is. In other words, both nature and nurture have effects on a person's identity. When explaining the nature side of things, nature is developed by the biologically and genetically passed down traits that influence a person's behavior. Nurture is described by all environmental factors and traits that are established through experience of how one grows by attaining the knowledge through outside sources. Experience through life situations determines how one talks, acts and responds to another person. A person's identity comes from one's surrounding factors, which influence who he is. Nurture contributes to shaping one's identity because people are born with a blank state which environment then "fills" to form a person's gender, behavior as a child, and social acceptance. .
Philosopher John Locke has his own theory about all people are born with a blank slate, also known as the "tabula rasa" meaning that they are born with no knowledge and having an empty mind. It's the external forces and the surrounding world that makes up who a person is. It is until after they are born that one has identity. Nature versus nurture is vital among infants and children's early childhood. It is how one is brought up through parental factors that influence a child's identity and behavior. If a child is born with a blank slate and is taught the rights and wrongs through parents then that is how they will know how to act as they grow up and become adults.