 On traditional, two-part models from pathology, dysfunctional organic processes internal to the individual are manifested in, and causally responsible for, more readily observable signs and symptoms; collectively, these two parts make up the disease concept. Employed for mental disease (illness, disorder), certain of those underlying processes have been delimited as mental by appeal to the traditional categories of faculty psychology (perception, affection, cognition, memory, and so on). For example, hallucinations represent dysfunctional perceptual capabilities, mania and depression disturbed affect regulation, and delusions defective cognitive processing. A disorder is thus determined to be mental as distinct from physical if its internal causes involve psychological faculties (Wakefield 1997). By contrast, although also governed by traditional facultative divisions, other accounts ascribe disabled mentality not to underlying features but to effects on the subject’s social and personal functioning (Rashed &amp; Bingham 2014; Wakefield 1992, 1997.). For example, it is because her states of sadness and self-doubt result in absenteeism, that the person with depression seeks medical help (see  §4.2).