Laing's definition of identity closely follows Erikson's, in emphasising the past, present and future components of the experienced self. He also develops the concept of the "metaperspective of self", i.e. the self's perception of the other's view of self, which has been found to be extremely important in clinical contexts such as anorexia nervosa. (Saunderson and O'Kane, 2005). Harré also conceptualises components of self/identity – the "person" (the unique being I am to myself and others) along with aspects of self (including a totality of attributes including beliefs about one's characteristics including life history), and the personal characteristics displayed to others.