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May 27, 1899, Vol XXXII, No. 21 >
ARTICLE | May 27, 1899

COLORED CHILDREN: A PSYCHOPHYSICAL STUDY.

ARTHUR MACDONALD
JAMA. 1899;XXXII(21):1140-1144. doi:10.1001/jama.1899.92450480001002.
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ABSTRACT

In all new lines of inquiry it is a general principle to regard the results as more or less tentative, according to the number of persons experimented upon.

In this study the results depend upon averages which are valuable according to the whole numbers from which the averages are made. In many instances these numbers are not as large as one would desire. We hope this may induce some investigator to make experiments upon larger numbers.

SPECIAL STUDY OF NINETY-ONE COLORED CHILDREN.  Instruments used: The calipers (Fig. 1) are used for measuring the length and width of head.The right end of the calipers (R) is held at the root of the nose; the one measuring watches the scale while he brings the left point of the calipers over the back and middle of the head, thus finding the maximum length of head. The width of the head is measured

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