ABSTRACT

One of the most highly developed capacities of the speakers is to adapt speech and language to a special aspect of the world, the world they are living in. In normal development the progress is very slow and gradual, continuously keeping pace with the requirements of the environment. In abnormal speech the development is more or less unbridled, because the higher levels have lost their control over the lower ones. Speech therapist shall have the opportunity of seeing this principle, already foreshadowed in their evolutionary considerations, at work in many speech disorders. Speech therapist will deal presently with a class of disorders in which the power of symbolic conception of the world and of its symbolic representation is more seriously disordered. Patients who are incapable of symbolising verbally or are restricted in doing so, i.e. in showing by their speech what they live and experience, suffer from Aphasia or Dysphasia.