LEGO Based Therapy is a social development program that uses LEGO building activities to assist children, particularly those with autism spectrum condition (ASC) and related conditions, in developing their social skills. The therapy was originally developed by psychologist Daniel LeGoff, who noticed that children with ASC were more engaged and interactive when they were doing LEGO activities.

LEGO Based Therapy and its benefits:

1. Structure: LEGO-based therapy is highly structured, providing a familiar and predictable environment that many children with ASC find comforting. 

2. Social Skills Development: The therapy encourages children to communicate and negotiate with their peers. 

3. Collaboration and Teamwork: Because the completion of the LEGO model requires the group effort, the therapy encourages teamwork. 

4. Enhanced Communication: As children negotiate about what pieces to use, describe their ideas, and articulate instructions, they are developing both their expressive and receptive language skills.

5. Fine Motor Skills Improvement: Handling and connecting LEGO pieces can help improve fine motor skills, which are important for writing, buttoning clothing, and other tasks requiring finger dexterity.

6. Confidence and Self-Esteem: Successfully building a LEGO model can provide a sense of accomplishment, boosting the child's confidence and self-esteem. 

7. Flexibility: The therapy can be adapted for different ages, abilities, and interest levels.