ABSTRACT
This chapter aims is to provide an overall framework and to show at least in outline what such a model must look like even if some of the details will require much more work elsewhere to delineate. The purposes of this chapter, the reader can assume that the ability to reason is best conceived as a set of process-related abilities that may play a role in understanding, appreciation, and valuing. The model proposes a sequence or a process, it is not intended to be a psychological model, its main purpose is conceptual, with only the minimal process assumptions to make the conceptual model coherent. The case of body integrity identity disorder (BIID) is useful in comparison with the situation in anorexia nervosa. To the extent that the ability to value is essential to decision-making and can be impaired due to pathology, it is not a controversial claim that decision-making capacity (DMC) evaluation must include an assessment of that ability.
