“…Most commonly the developmental history forms an essential background against which the signs, management, and prognosis of specific disease must be interpreted and modified (Sheridan, 1968). Second, routine developmental testing as a screening procedure can yield numerous previously unsuspected health problems (Frankenburg et al, 1970), although its widespread use is exceptional (Carr and Stephen, 1964). Third, the formulation of a developmental quotient may form the essential early diagnostic tool itself in such cases as non-specific mental retardation (Tizard, 1969).…”