Labouvie-Vief believed that adults think in more complex ways than described by Piaget's stages of formal operations. Specifically:
1) Adults acknowledge problems may lack right/wrong answers and draw on experience to solve them through relativistic thinking using both logic and intuition.
2) Adults also engage in dialectical thinking through appreciating arguments, counter-arguments, and debate.
3) Development moves from hypothetical thought in adolescence to pragmatic thought in adulthood, where adults accept inconsistencies and focus on compromise.