Introversion
This state is called the state of introversion, the libido is used for the psychical inner world instead of being applied to the external world. A regular attendant symptom of this retardation in the emotional development is the so-called parent-complex. If the libido is not used entirely for the adaptation to reality, it is always more or less introverted. The material content of the psychic world is composed of reminiscences, giving it a vividness of activity which in reality long since ceased to pertain thereto. The consequence is, that these patients still live more or less in a world which in truth belongs to the past. They fight with difficulties which once played a part in their life, but which ought to have been obliterated long ago. They still grieve over matters, or rather they are still concerned with matters, which should have long ago lost their importance for them. They divert themselves, or distress themselves, with images which were once normally of importance for them but are of no significance at their later age.