In previous communications made to this Journal I have pointed out that the cerebral excitation processes mediating an idea, or judgment, are produced by the interaction of two factors which I term H and L respectively, and that, in the case of judgment, the factor L constitutes the material to be judged and the factor H judging capacity. When the judge has interacted with the material brought for judging, there results a judgment (1, 2, 3, 4, 5). So long also as we avoid some form of fit (2) or spasm (4), the sum of the two factors H and L must fall within the limits of another factor, T, the capacity of the responding organ (1).