ourselves back into our credulous attitude? We all know, again, how disconcerting it is to be faced by a third possibility when we have comfortably reduced things to a choice of alternatives; but can we not, now and then, catch ourselves in a _felt_ attitude of dividing by two? Let the reader keep an eye on his own experiences! Lastly, a response that is often repeated will illustrate the psychological law of growth and decay (p. 183); the organic and kinæsthetic sensations will be supplemented by _images_, which will increase up to a certain point, and thereafter fall away. Fear of the dark is one instance; the use and disuse of terms of endearment offer another. As regards =feeling=, we can only say that all six types of sense-feeling—the agreeable and disagreeable, the exciting and subduing, the straining and relaxing—may appear in connection with instinctive responses, and especially with those that we have placed in the middle portion of the scale. Such words as fear, pugnacity, rivalry, carry the stamp of feeling upon them. § 48. =Determining Tendencies.=—The reader must have felt for some time past that we sorely need a technical term for all the directive nerve-forces, brain-habits, instinctive tendencies, and so forth, that figure in psychological discussion. There is such a term, formed on the analogy of ‘associative tendencies’; psychologists are coming more and more to speak of =determining tendencies=. Any nervous set or disposition that turns our attention in a certain direction, that casts our perceptions into a certain form, that places a definite meaning upon an equivocal word, that governs our response to a particular situation, may be called a determining tendency. Some of these tendencies are simple, and some are extremely complex; some are inherited, and some are acquired in the life-time of the individual. All alike _lay down a path of least resistance for the psychoneural processes_ (p. 164) _to follow_, and thus determine the flow of the mental stream.