Stereotypical behaviors are the obvious common characteristics among children who are visually impaired. There are various degrees of influence according to its order of severity to child's participation. However, the emergence of stereotypical behavior has served in the function of a communication channel that conveys the needs and intentions of children with disabilities. Recently, researchers employed functional analyses to assess the possible causes of stereotypy, and then developed appropriate interventional strategies. They found that stereotypical behavior may be maintained by positive sensory reinforcement, negative sensory reinforcement, positive social reinforcement, negative social reinforcement, or multiply-determined reinforcement. |