Piaget regarded children's self-talk as a sign of:

1. Piaget recorded children talking to themselves in classrooms. 2. He termed it egocentric speech. 3. For Piaget, egocentric speech was a sign of cognitive immaturity. 4. Planning, emotional control and early literacy are the benefits Vygotsky stressed. **Why not the others:** Planning skill, emotional control and early literacy are the benefits Vygotsky attached to private speech, not Piaget's view. _Source: Wikipedia, "Private speech", section "History and theory" (revision 1378894484)_