Citation: Simpson SG, Skewes SA, van Vreeswijk M and Samson R (2015) Commentary: Short-term group schema therapy for mixed personality disorders: an introduction to the treatment protocol. The evidence base for schema therapy (ST) has grown rapidly in recent years, as applied to a wide range of clinical groups (Masley et al., 2011); for ST with groups see Farrell et al. Variations exist between...