Page:Freud - A general introduction to psychoanalysis.djvu/29

when he is slightly ill or fatigued; when he is excited; when his attention is concentrated on something else. It is easy to prove these statements. Slips of the tongue do really occur with special frequency when one is tired, when one has a headache or when one is indisposed. Forgetting proper names is a very frequent occurrence under these circumstances. Many persons even recognize the imminence of an indisposition by the inability to recall proper names. Often also one mixes up words or objects during excitement, one picks up the wrong things; and the forgetting of projects, as well as the doing of any number of other unintentional acts, becomes conspicuous when one is distracted; in other words, when one’s attention is concentrated on other things. A familiar instance of such distraction is the professor in Fliegende Blätter, who takes the wrong hat because he is thinking of the problems which he wishes to treat in his next book. Each of us knows from experience some examples of how one can forget projects which one has planned and promises which one has made, because an experience has intervened which has preoccupied one deeply.

This seems both comprehensible and irrefutable. It is perhaps not very interesting, not as we expected it to be. But let us consider this explanation of errors. The conditions which have been cited as necessary for the occurrence of these phenomena are not all identical. Illness and disorders of circulation afford a physiological basis. Excitement, fatigue and distraction are conditions of a different sort, which one could designate as psycho-physiological. About these latter it is easy to theorize. Fatigue, as well as distraction, and perhaps also general excitement, cause a scattering of the attention which can result in the act in progress not receiving sufficient attention. This act can then be more easily interrupted than usual, and may be inexactly carried out. A slight illness, or a change in the distribution of blood in the central organ of the nervous system, can have the same effect, inasmuch as it influences the determining factor, the distribution of attention, in a similar way. In all cases, therefore, it is a question of the effects of a distraction of the attention, caused either by organic or psychic factors.

But this does not seem to yield much of interest for our psychoanalytic investigation. We might even feel tempted to give up the subject. To be sure, when we look more closely we