The subculture of developmental disabilities services has embraced ideologi
cal perspectives from academia in general and from other service sectors, i
ncluding, in recent years, the educational sector. Prevalent ideological an
d philosophical perspectives with growing influence within the professional
literature and to a lesser degree, the practitioner community, include pos
tmodernist and constructionist doctrine. These perspectives influence the d
epiction of utility of a wide variety of clinical and programmatic activiti
es that typify services and, generally, impact upon decision making by poli
cy makers, administrators. and possibly, to an important degree. by manager
s who influence events at the point of clinical and service contact. This a
rticle discusses the nature and character of these influences and the issue
s facing the field, centering on the act of classifying a person with mild
mental retardation, as well as uncertainties regarding both the process and
consequences of classification. Recommendations are made for an expanded b
ut modified role for adaptive behavior assessment in this process. Copyrigh
t (C) 2001 John Wiley & Sons, Ltd.