“…Relative to children with secure attachment histories, children with insecure attachment histories were less likely to show task persistence. The lack of persistence in the face of challenge suggests that these children have an unstable sense of self-worth (Morley & Moran, 2011;Ziegert, Kistner, Castro, & Robertson, 2001). Accordingly, Sroufe et al (2005) found that the insecurely attached children, relative to the securely attached children, had lower teacher-rated self-esteem.…”