Pittala ET, et al. - Researchers examined a developmental individual, interactive and intensive approach, called the ‘3i method’, which was based on play therapy for children with autism spectrum disorder (ASD). This prospective study involved twenty DSM-IV-TR ASD subjects and followed the 3i method for two years. According to the findings obtained, children who followed the 3i method for 2 years had significantly improved behavioural and developmental skills and showed a clear decrease in autism severity. They suggested that the 3i method could be beneficial for autistic children by improving their daily interactions with their social environment.