 Certainly the importance of aiming at valued social roles for people subject to social devaluation had become more prominent in the definition of normalization before SRV was conceptualized.Wolfensberger and his colleague Susan Thomas prepared a third edition of PASSING, fully based on SRV, which was published in 2007 and is still in full use (Wolfensberger and Thomas, 2007).PASSING is based on the assumption that the occupation of valued social roles by those who use services is the desired outcome of a service program.