Comparative Psychology Monographs, Volume 3; Volumes 13-17

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Williams & Wilkins Company, 1926 - Ability - 79 pages
Contains studies of animal behavior, in addition to studies in human psychology, conducted from the comparative point of view.
 

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Page 62 - In summary, then, it has been found that there is a direct relationship between the amount of Indian blood and the social, school, and mental status of Mexicans in Tucson.
Page 10 - Now the score 272 has a percentile value of 19, so that if our percentile is in error by an amount equal to its standard deviation, our score is not in error by more than four units. The error would amount to the same for the 30 percentile point for nine-year girls on the Five Figure Form Board, still less 1 All other points from which our curves have been drawn have been computed in this same manner, the median of the group rather than the maximum furnishing the point. For a discussion of this method...

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