Media type: E-Article Title: Mental development and the measurement of the level of intelligence Contributor: De Sanctis, Sante imprint: American Psychological Association (APA), 1911 Published in: Journal of Educational Psychology Language: English DOI: 10.1037/h0069835 ISSN: 1939-2176; 0022-0663 Keywords: Developmental and Educational Psychology ; Education Origination: Footnote: