Abstract
This paper examines the potential effects on parent‐child interactions when children, because of severe mental and physical impairments, are unable to exhibit most social responses. A model is proposed to explain why a child is perceived to be responsive or unresponsive by parents and caregivers; the former applies only if the child's behaviour is recognized and valued by the observer. It is also proposed that: (a) perceived unresponsiveness may be more critical than the disability per se;(b) intense interactions early in the disabled child's development, commonly described by observers as controlling, intrusive behaviour, may be due to high levels of caregiver motivation and extinction burst effects; and (c) reductions in the amount of some caregiver‐child interactions may be the outcome of previously unrewarded interaction attempts and decreased expectancy levels.