Andrews et al (2001) found that 60% of individuals with a mental disorder had this disorder a year earlier already. Hughes and Cohen (2009) found a majority of patients with a depressive disorder still suffering from recurrent depressive episodes ten years later. Chronicity has also consistently been found to be strongly related to a high utilisation of medical services (e.g. Fasel et al, 2010), and to be a decisive factor for long-term sickness absence and disability (e.g. Bergh et al, 2007). In schizophrenic disorders, for example, around 70% show substantial social and vocational impairments or residual symptoms (Moller et al.,