“…For example, while some investigators found that separation anxiety is significantly related to the development of panic disorder and agoraphobia (Bandelow et al, 2002;Laraia, Stuart, Frye, Lydiard, & Ballenger, 1994;Silove et al, 1995), others could not find confirmation for this hypothesis (Aschenbrand et al, 2003;Doerfler, Toscano, & Connor, 2008;Peter, Brückner, Hand, & Rufer, 2005;Thyer, Himle, & Fischer, 1988;Thyer, Nesse, Curtis, & Cameron, 1986). Moreover, the memory of separation anxiety in these studies was examined by self-report scales, which indicate that subjects were, in fact, aware of these events (Bandelow et al, 2001;Zitrin & Ross, 1988). However, according to psychoanalytic theory, it is the subject's unawareness of the specific childhood trauma, which is said to cause the development of fear and phobia (De Poderoso et al, 2005).…”