“…This result was especially true in the case of 'predicative associations' (e.g., glass-brittle, father-good), which were given by 60 percent of the children under 12 years of age from the 'proletariat' and by only 30 percent of the children of the same age from the 'better circles.' 4 Rosanoff, Martin, and Rosanoff (16) have attempted to develop a free association technique "whereby a subject's mental capacity might be estimated from a measure of what he has acquired in the course of his education, and from a comparison of his acquisition with the average of a group of subjects of the same amount of education" (p. 2). The stimulus words consisted of 100 orally-presented technical terms, selected from different fields of academic learning (e.g., Waterloo, isomerism, burette, coagulation, titration, syntax, etc.).…”