The people MOST apt to become postformal thinkers are those who:

Postformal thinking is characterized by the ability to approach complex problems with a more flexible mindset, recognizing that multiple perspectives exist and that issues may not have clear-cut solutions. Individuals who have friends from diverse backgrounds are more likely to be exposed to various viewpoints, experiences, and ways of thinking. This exposure fosters open-mindedness and the ability to understand and integrate diverse perspectives, both of which are key components of postformal thought.

Engaging with others from different backgrounds allows individuals to encounter and grapple with complexity and ambiguity in various contexts. This experience encourages cognitive growth and enhances problem-solving skills, enabling them to navigate real-life scenarios that require flexible and integrative thinking. Those who have diverse social circles are more apt to develop the capacity to weigh various factors and make nuanced decisions, which aligns with the essence of postformal thought.