In Later Years, Kohlberg Removed Stage 6 from His Theory

In later years, Kohlberg removed stage 6 from his theory of moral development in recognition of which issues?

A) The finding was there that universal ethical principles are understood at stage 4, not at stage 6.
B) That stage 6 may reflect specifically Western cultural influences
C) There was no accurate way of assessing thinking in stage 6
D) His acknowledgment that stage 6 did not exist equally for men and women.