Test-retest stability of the VCP was studied in sixty chronic schizophrenic patients. While no significant correlation between the first and the second test was revealed on any of the eleven individual functions tested, the correlation between the first and second test was found to be significant for the battery as a whole. Since there was also a significant correlation between the first and second test for the integrational functional system in contrast to the autonomic and skeletomuscular functional systems, the integrational functional system may be of greater importance in the characterization of psychiatric patients than the autonomic and the skeletomuscular functional systems.