Including Intellectual impairment and mental illness in disability types in Census 2011 in Nepal

About one month is left for 2011 census in Nepal. It is to know the actual data of the population of the country which help country to allocate the resources proportionately. The census is done in every ten year. Different training for respondent to collect data, worshops, awareness throught televison, radio/FM and preparation for census is going on highly in Nepal.
The major issues in the census will be disability data. The problem for the respondent are:
1. They hesitate to ask about disability
2. They are unaware about the type of disability
3. They think disability is only phisically impairment
So special training for the respondent to collect accurate data of disability is essentail.
The next autism, cerebal palsy, intellectual impairement are totally new for the country. The option of intellectual impairement and mental illness is there in the quesstionare. But the intellectual impairement and mental illness is totally different term and it should be done properly in census. For this also special training should give to data collector.