Most people with autism experience significant delays in their language development. They often lack the intuition about others that many people take for granted and use language in an unusual way, such as by imitating others. With speech training, some individuals are able to use simple language or communicate with gestures. However, their lack of communication initiative, facial expression and detachment also affect their ability to communicate with others. In addition, many autistic individuals have below average imagination and abstract thinking skills, so imaginary play activities can be difficult. By engaging them in one-on-one teaching and small group activities, they can develop basic communication and gaming skills gradually, step by step.