<prompt> Developmental Quotient is calculated as:Average age at attainment observed age at attainment x100Observed age at attainment average at attainment x100Observed age at attainment x average age at attainmentObserved age at attainment average age at attainment  <response>: Ans. A. Average age at attainmentobserved age at attainment x100Significant delays on screening is an indication for a detailed formal assessment of developmental status. By assessment, one can assign developmental quotient DQ for any developmental sphere. A DQ below 70 is taken as delay 