Here is a simple example of this, which I myself observed. In our beautiful Dolomites, I meet two Viennese ladies who are gotten up as tourists. I accompany them a short distance and we discuss the pleasures, but also the difficulties of the tourist’s mode of life. One lady admits this way of spending the day entails much discomfort. “It is true,” she says, “that it is not at all pleasant, when one has tramped all day in the sun, and waist and shirt are soaked through.” At this point in this sentence she suddenly has to overcome a slight hesitancy. Then she continues: “But then, when one gets nach Hose, and can change. . . . ”19 We did not analyze this slip, but I am sure you can easily understand it. The lady wanted to make the enumeration more complete and to say, “Waist, shirt and drawers.” From motives of propriety, the mention of the drawers (Hose) was suppressed, but in the next sentence of quite independent content the unuttered word came to light as a distortion of the similar word, house (Hause).
Now we can turn at last to the long delayed main question, namely, what kind of intentions are these which get themselves expressed in an unusual way as interferences of others, intentions within whose great variety we wish nevertheless to find what is common to them all! If we examine a series of them to this end, we will soon find that they divide themselves into three groups. In the first group belong the cases in which the interfering tendency is known to the speaker, and which, moreover, was felt by him before the slip. Thus, in the case of the slip “refilled,” the speaker not only admits that he agreed with the judgment “filthy,” on the incidents in question, but also that he had the intention (which he later abandoned) of giving it verbal expression. A second group is made up of those cases in which the interfering tendency is immediately recognized by the subject as his own, but in which he is ignorant of the fact that the interfering tendency was 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