This is defined as a markedly disturbed and developmentally inappropriate social relatedness, that begins before age 5, and is associated with grossly pathological care. This means, usually, that the child has been emotionally neglected and deprived of affection, stimulation or basic physical needs. Prognosis and outcome in RADI are highly dependent on the severity of inadequate caregiving, the length of time spent in the depriving environment and the adequacy of corrective measures if the infant is placed in a new setting.
Considerable improvement can occur if an appropriately supportive environment is provided.