Introduction into methodology of moral reasoning, esp. represented by the Kohlberg's theory, and methods of james Rest are presented. With respect to continuing cross-cultural verifications of the main issues as so as to the possible effect of historical/political experience in the post-communist countries, the pilot study (104 adolescents and young adults, in four groups) was realized. Analysis of variance revealed significant differences between groups in prae-, conventional and post-conventional reasoning, not in ''advanced conventional'' ones. Gratuitous blood doners scored highest in items/stories with individual values, the young religious group in items/stories subsumed as social''. Discussion of the forms of evaluative procedures (P % or other forms) leaning to the results obtained is aimed to the perspectives of further international collaboration in this area, which is highly actual now.