“…Thus, in the developmental disabilities literature, there is suggestive evidence that problem behavior is more likely to occur in the presence of nonpreferred staff members than preferred staff members, particularly when task demands are presented (Carr et al, 1994;Kemp & Carr, 1995;Demchak & Bossert, 1996). It has also been observed (Favell, Realon, & Sutton, 1996;Green & Reid, 1996) that positive interactions with staff members produce high levels of "happiness" (e.g., smiling, laughing) and low levels of "unhappiness" (e.g., crying, yelling). These reports are consistent with the notion that relationship quality (i.e., rapport) may be a key factor influencing problem behavior (Carr et al, 1994).…”