“…Researchers have found measures of friendship quality to be related to indicators of adjustment in middle childhood. Correlational-designed studies suggest that friendship quality is negatively related to loneliness (Parker & Asher, 1993), depression (Nangle, Erdley, Newman, Mason & Carpenter, 2003), aggressive and disruptive behaviours (Bagwell & Coie, 2004), victimization (Bollmer, Milich, Harris, & Maras, 2005), low engagement in school (Leary & Katz, 2005), and friendship termination (e.g., Rose, Swenson, & Carlson, 2004), but positively related to positive self-esteem, greater peer acceptance (Keefe & Berndt, 1996), social perspective taking skills and altruism (McGuire & Weisz, 1982), sociability and leadership (Berndt, Hawkins, & Jiao, 1999), school liking , and overall adjustment (Waldrip, Malcolm, & Jensen-Campbell, 2008).…”