You need to go through this link (http://www.montessori-science.org/montessori_science_journal.htm http://www.montessori-science.org/montessori_science_journal.

You need to go through this link (http://www.montessori-science.org/montessori_science_journal.htm http://www.montessori-science.org/montessori_science_journal...) and click "see article full text" to get access to the study linked above.