Journal of Educational Psychology, Svazek 7

ability addition ALFRED BINET American Psychological Association arithmetic Association average difficulty basis better Binet tests Binet-Simon boys cent chapters child coefficient College Columbia University correlation course curves David Spence determined discussion distribution educational psychology efficiency eight eighth grade errors examination experiment experimental Extreme Slant feeble-minded figures five Form Board four geometry girls give given high school indicate individual intelligence intelligence quotient interest IRVING KING Journal learning lisping marked mathematics means measure median score Medium Slant ment mental tests method minutes norms omitted opposites papers percentage period plane geometry point scale practice present problem Professor public schools pupils quartile rank record selected silent reading SMILEY BLANTON social speech defects speech disorders spelling standard stuttering subjects subtraction TABLE teachers teaching tion Total University University of Iowa vertical writing words York