The number of reports in literature, which describe a dysfunction in h
emispheric organization in schizophrenic diseases is constantly increa
sing. In particular the results of neuropsychological, morphological/a
natomical investigations confirm the hypothesis of intra- or interhemi
spheric deviations, which are connected to the pathogenesis of the dis
ease. At present it is difficult to accept the sole argumentative forc
e of one theory because of contradictory results obtained in different
subgroups by different examination methods. With regard to future inv
estigations a differentiated and uniform advance is necessary.