At a hotel in Chennai, parents of autistic children are busy taking lessons on a new child-friendly teaching methodology. The Applied Behaviour Analysis, ABA as it's called, is internationally known for shaping behaviour and developing functional skills among autistic children in a scientific and measurable way. Ms Smita Awasthi, founder of the ABA Association, told NDTV "As a behaviour analyst, I would demonstrate to parents how to deal with behaviour and how to develop good behaviour among children with autism".