For early detectio of mental retardation use this chart which is based on BSID Baroda norms and Trivandrum Developmental Screening Chart.

Draw a vertical line at the age of your child. All milestones marked on the age chart falling to the left of this line that you have drawn should have been achieved by your child. If not, please consult your doctor.

Early detection of developmental delay and motor deficit and early intervention is the key to successful rehabilitation of these children. Parents of newly diagnosed children with mental retardation often refuse to accept that their child is not "normal". This leads to a delay in instituting early therapy. Delay in starting an individualised program for a given child often results in the child developing some set patterns which are difficult to change. Therefore special schools prefer to start a program by age 3 or 4 and may not accept children at ages above 6 or 7. The need therefore is to approach institutions in your vicinity at the earliest.