* Think out loud: To work through problems, plan their day, or simply process their thoughts.
* Rehearse conversations: To prepare for upcoming interactions or to practice their sign language skills.
* Express emotions: To vent frustrations, celebrate successes, or simply to regulate their mood.
It's important to remember that sign language is a complete language, with its own grammar, syntax, and vocabulary. It's a natural form of communication for deaf people, and they use it in all aspects of their lives, including talking to themselves.