“…Interest in the self has a long history (James, 1890(James, /1955Mead, 1934;Rosenberg, 1965), and research on the self shows little sign of waning (Baumeister & Vohs, 2004;Leary & Tangney, 2003;Sedikides & Gregg, 2003). Knowledge about the self has been augmented more recently by biologically oriented approaches, such as work on links between the prefrontal cortex and processes involved in selfregulation (Davidson & Irwin, 1999) and work pertaining to genetic influences on self-esteem (Neiss, Sedikides, & Stevenson, 2002). Our investigation complements and extends these approaches by focusing on both phenotypic and genotypic analyses of the self.…”