ABSTRACT
We all sort sensory information in our own, unique way. This means that we think and behave differently, even given identical situations and inputs. This reveals itself in our personality characteristics or dispositions, such as introversion and extroversion, thinking and feeling, and so on. Neurologically, these long-standing patterns of mind and behaviour reflect well-established brain patterns. We create neural pathways, or routings, much as a river becomes deeper and wider as more and more water flows into it from smaller streams. Well-entrenched personality traits act like great river canyons, or busy highways that seem to attract more traffic the wider they grow. Change becomes harder the longer we live.
