active in him just before the slip. He therefore accepts our interpretation, yet remains to a certain extent surprised by it. Examples of this situation can perhaps more easily be found among errors other than slips of the tongue. In a third group the interpretation of the interfering intention is energetically denied by the speaker. He not only denies that the interfering tendency was active in him before the slip, but he wants to assert that it was at all times completely alien to him. Will you recall the example of "hiccough," and the absolutely impolite disavowal which I received at the hands of this speaker by my disclosure of the interfering intention. You know that so far we have no unity in our conception of these cases. I pay no attention to the toastmaster's disavowal and hold fast to my interpretation; while you, I am sure, are yet under the influence of his repudiation and are considering whether one ought not to forego the interpretation of such slips, and let them pass as purely physiological acts, incapable of further analysis. I can imagine what it is that frightens you off. My interpretation draws the conclusion that intentions of which he himself knows nothing may manifest themselves in a speaker, and that I can deduce them from the circumstances. You hesitate before so novel a conclusion and one so full of consequences. I understand that, and sympathize with you to that extent. But let us make one thing clear: if you want consistently to carry through the conception of errors which you have derived from so many examples, you must decide to accept the above conclusion, even though it be unpleasant. If you cannot do so, you must give up that understanding of errors which you have so recently won.
Let us tarry a while over the point which unites the three groups, which is common to the three mechanisms of tongue slips. Fortunately, that is unmistakable. In the first two groups the interfering tendency is recognized by the speaker; in the first there is the additional fact that it showed itself immediately before the slip. In both cases, however, it was suppressed. The speaker had made up his mind not to convert the interfering tendency into speech and then the slip of the tongue occurred; that is to say, the suppressed tendency obtains expression against the speaker's will, in that it changes the expression of the intention which he permits, mixes itself with it or actually puts itself in its place. This is, then, the mechanism of the tongue slip.
From my point of view, I can also best harmonize the processes of the third group with the mechanism here described. I need only assume that these three groups are differentiated by the different degrees of effectiveness attending the suppression of an intention. In the first group, the intention is present and makes itself perceptible before the utterance of the speaker; not until then does it suffer the suppression for which it indemnifies itself in the slip. In the second group the suppression extends farther. The intention is no longer perceptible before the subject speaks. It is remarkable that the interfering intention is in no way deterred by this from taking part in the causation of the slip. Through this fact, however, the explanation of the procedure in the third group is simplified for us. I shall be so bold as to assume that in the error a tendency can manifest itself which has been suppressed for even a longer time, perhaps a very long time, which does not become perceptible and which, therefore, cannot be directly denied by the speaker. But leave the problem of the third group; from the observation of the other cases, you most draw the conclusion that the suppression of the existing intention to say something is the indispensable condition of the occurrence of a slip.
We may now claim that we have made further progress in understanding errors. We know not only that they are psychic acts, in which we can recognize meaning and purpose, and that they arise through the mutual interference of two different intentions, but, in addition, we know that one of these intentions must have undergone a certain suppression in order to be able to manifest itself through interference with the other. The interfering intention must itself first be interfered with before it can become interfering. Naturally, a complete explanation of the phenomena which we call errors is not attained to by this. We immediately see further questions arising, and suspect in general that there will be more occasions for new questions as we progress further. We might, for example, ask why the matter does not proceed much more simply. If there is an existing purpose to suppress a certain tendency instead of giving it expression, then this suppression should be so successful that nothing at all of the latter comes to light; or it could even fail, so that the suppressed tendency attains to full expression. But errors are compromise formations. They mean some success and some failure for each of the two purposes. The endangered intention is neither completely suppressed nor does it, without regard to individual cases, come through wholly intact. We can imagine that special conditions must be existent for the occurrence of such interference or compromise formations, but then we cannot even conjecture what sort they may be. Nor do I believe that we can uncover these unknown circumstances through further penetration into the study of errors. Rather will it be necessary thoroughly to examine other obscure fields of psychic life. Only the analogies which we there encounter can give us the courage to draw those assumptions which are requisite to a more fundamental elucidation of errors. And one thing more. Even working with small signs, as we have constantly been in the habit of doing in this province, brings its dangers with it. There is a mental disease, combined paranoia, in which the utilization of such small signs is practiced without restriction and I naturally would not wish to give it as my opinion that these conclusions, built up on this basis, are correct throughout. We can be protected from such dangers only by the broad basis of our observations, by the repetition of similar impressions from the most varied fields of psychic life.
We will therefore leave the analysis of errors here. But may I remind you of one thing more: keep in mind, as a prototype, the manner in which we have treated these phenomena. You can see from these examples what the purposes of our psychology are. We do not wish merely to describe the phenomena and to classify them, but to comprehend them as signs of a play of forces in the psychic, as expressions of tendencies striving to an end, tendencies which work together or against one another. We seek a dynamic conception of psychic phenomena. The perceived phenomena must, in our conception, give way to those strivings whose existence is only assumed.
Hence we will not go deeper into the problem of errors, but we can still undertake an expedition through the length of this field, in which we will reëncounter things familiar to us, and will come upon the tracks of some that are new. In so doing we will keep to the division which we made in the beginning of our study, of the three groups of tongue slips, with the related forms of pen slips, misreadings, mishearings, forgetfulness with its subdivisions according to the forgotten object (proper names, foreign words, projects, impressions), and the other faults of mistaking, mislaying and losing objects. Errors, in so far as they come into our consideration, are grouped in part with forgetfulness, in part with mistakes.
We have already spoken in such detail of tongue slips, and yet there are still several points to be added. Linked with tongue slips are smaller effective phenomena which are not entirely without interest. No one likes to make a slip of the tongue; often one fails to hear his own slip, though never that of another. Tongue slips are in a certain sense infectious; it is not at all easy to discuss tongue slips without falling into slips of the tongue oneself. The most trifling forms of tongue slips are just the ones which have no particular illumination to throw on the hidden psychic processes, but are nevertheless not difficult to penetrate in their motivation. If, for example, anyone pronounces a long vowel as a short, in consequence of an interference no matter how motivated, he will for that reason soon after lengthen a short vowel and commit a new slip in compensation for the earlier one. The same thing occurs when one has pronounced a double vowel unclearly and hastily; for example, an "eu" or an "oi" as "ei." The speaker tries to correct it by changing a subsequent "ei" or "eu" to "oi." In this conduct the determining factor seems to be a certain consideration for the hearer, who is not to think that it is immaterial to the speaker how he treats his mother tongue. The second, compensating distortion actually has the purpose of making the hearer conscious of the first, and of assuring him that it also did not escape the speaker. The most frequent and most trifling cases of slips consist in the contractions and foresoundings which show themselves in inconspicuous parts of speech. One's tongue slips in a longer speech to such an extent that the last word of the intended speech is said too soon. That gives the impression of a certain impatience to be finished with the sentence and gives proof in general of a certain resistance to communicating this sentence or speech as a whole. Thus
