To a large extent, the general disturbance of the highgrade mentally defectives, is based on „Brain Injury', that can manifest itself-among other things-in disorders of the perception and selection of stimuli (mostly external). In the treatment of mentally defectives, it is necessary to take this question into consideration, especially in those situations, who demand-whatever may be the reason-concentration and attention.
The construction, grouping, furnishing and so on of the Institutes and Clinics, have to be more adapted to this principle, than up to the present.