Reframing QoL assessment in persons with neurodevelopmental disorders.

The paper reviews the international literature on quality of life (QoL) for persons with neurodevelopmental disorders (NDD) in order to define the theoretical frame for optimal assessment. The application of the QoL approach to assessment procedures should be based on three main aspects: shared QoL, personal QoL and family QoL. The first aspect refers to characteristics of individual life that are shared with other people. The second aspect proceeds from the fact that each individual has a changing set of personal attributes that determine the subjective experience of life. In the third aspect the previous two are applied to the family that includes a person with NDD. Disability impacts the whole family and the determination of appropriate conceptualization of family outcomes requires an understanding of the impact of members with a disability on family QoL. At any level, it seems best to take a comprehensive approach to assessing QoL, integrating subjective and objective aspects, self-reports and hetero-evaluations. The QoL approach is above all a way to explore the rich intricacies of personal quality of life. Such assessment may be used effectively with people with NDD, independently from the severity of their functioning impairment. Individuals with profound ID may express their inner states through consistent behavioural repertoires, which can be discerned by persons closest to them and validated by more independent others. Attention must be paid in using non-generic instruments, such as those that measure health-related QoL. Although they do focus on the individual person, they still support a theoretical perspective of QoL that has not departed significantly from the traditional medical approach. Currently available generic tools, although they have some common conceptual and evaluation characteristics, still show considerable differences in the areas to be included in "shared QoL", the dimensions used to evaluate "Individual QoL", and the role attributed to indicators of QoL. QoL assessment should not represent a classification of individuals, services or systems, but it should help provide, within service systems and organizations, a value system that is consistent with those values held by people with NDD.