“…Loss events, including loss of rank and resources, are associated with higher risk of affective disorders (Brown, 1993;Siegrist and Marmot, 2004). Based on ethological concepts from animal research such as territorial aggression and hierarchy, loss of rank and resources seem to be crucial factors determining the physiological alterations associated with depressed mood and anxiety and even clinical signs of depression in men (Price et al, 1994;Nesse, 1999;Rohde, 2001;Sloman et al, 2003;Parmigiani et al, 2009). This is known as the "social competition hypothesis" that "predicts that depression is linked to hierarchical defeat in humans' (Rohde, 2001;p.…”