He argued that for very young children, thinking is really talking out loud tooneself because they talk out loud even if they're not trying to communicate with someone in particular.
他认为，对于很小的孩子来说，思考就是大声地跟自己说话，因为小孩即便是自言自语时声音也很大。
2
As the individual matures, that overt talking tooneself becomes covert talking tooneself, but thinking still shows up as a laryngeal habit.