Published online by Cambridge University Press: 01 January 2025
The basic conditions and characteristics of measurement are outlined. The concepts entering into the measurement must be operationally defined; there must be a satisfactory representation of the character to be measured, and a quantitative comparison between the observed degree of the character and some reference point or scale. A conception of measurement which is too narrow would unnecessarily restrict investigation in the fields of psychology and education.
* For a more complete discussion of each of the points taken up in this paper, together with illustrations drawn from various sciences, see a paper by the present author, “How Science Measures,” published in The Journal of Experimental Education, Vol. V, No. 3, March, 1937.