1. The document summarizes four major adult development theories: William Perry's model of intellectual development, Belenky et al.'s women's ways of knowing model, Kitchener and King's reflective judgment model, and Baxter-Magolda's model of knowing and reasoning in college.
2. The theories track the progression of views about knowledge and truth from dualistic and received ways of knowing towards more independent, contextual, and constructed ways of knowing.
3. Across the theories, learners develop from passive receptors of knowledge towards actively constructing knowledge through experience, evaluation of evidence, and consideration of different viewpoints.