The results of genetic and mathematical analysis of MMPI-measured pers
onality traits performed on material obtained 37 families of schizophr
enia-afflicted probands were outlined, The results obtained suggest th
at heritability of traits in schizophrenic families is higher than in
the general population, The discriminant function significantly differ
entiating between schizophrenics' and healthy people's relatives and h
aving high heritability was calculated.