Harvard Business Review Article
Check out this brief article from Harvard Business Review describing research into how Innovators think.
The final paragraph has a quick mention about Montessori.
We also believe that the most innovative entrepreneurs were very lucky to have been raised in an atmosphere where inquisitiveness was encouraged. We were stuck by the stories they told about being sustained by people who cared about experimentation and exploration. Sometimes these people were relatives, but sometimes they were neighbors, teachers or other influential adults. A number of the innovative entrepreneurs also went to Montessori schools, where they learned to follow their curiosity. To paraphrase the famous Apple ad campaign, innovators not only learned early on to think different, they act different (and even talk different).