“…Neuroticism is itself heritable (Jang, Livesley, & Vernon, 1996;Loehlin, McCrae, Costa, & John, 1998), thus possibly accounting for genetic influences on self-esteem level and perceived stability. Past research indicates that self-esteem level shows a genetic correlation with neuroticism (Roberts & Kendler, 1999), although we lack evidence of a similar link with perceived stability. If a shared underlying temperament dimension explained entirely genetic influences on level and perceived stability, we would expect genetic influence on both to be carried by a common genetic factor.…”