Abstract
The growth of validated objective devices, and of knowledge of ergic and sentiment structure has now, for 20 years, put new instruments (MAT and SMAT) in the hands of psychological practitioners. They have been slow to recognize, however, the theoretical powers in conflict measurement, decision theory, the general dynamic calculus, and structured learning theory which this has brought about. Illustration is given here of the experimental and clinical gains, with a view to the growth of several areas inaccessible to bivariate experiment.

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