D Q = D e v e l o p m e n t a l   a g e C h r o n o l o g i c a l   a g e ? a hundred displaystyle DQ= frac Developmental age Chronological age *a hundred While IQ scores are still pertinent and essential in examining the level of intellectual disability, the new DSM-V adds Yet another layer of diagnostic criteria (Howdy, I thank the distinguishe