"The ecological perspective provides a useful guide for the assessment process. It deals with life situations and with the interface between the child and the important subsystems in which the child must function. According to this perspective, there are neither inadequate persons nor inadequate environments; rather, the fit between person and environment is in relative accord or discord. The ecological perspective further assumes that the attributes of the person and the situation need to be internally consistent, coherent, and positively complementary (p.105)."
Assessing Behavior Disorders in Children: An Eclectic Approach