Human personality does not originate in moral choice or conscious reasoning. Long before the brain can think symbolically, it evaluates. From birth, inherited neural comparators continuously distinguish comfort from discomfort, safety from threat, and coherence from instability. These evaluations regulate early prediction patterns through Predictive Feedback (PF), while emotions function as broadcast signals of the brain’s internal regulatory state—coordinating action internally and communicating condition externally.
During early childhood, repeated emotional and social interactions calibrate these comparators and stabilize specific predictive pathways. This process shapes the developing prefrontal cortex and biases how the individual later restores internal balance. What societies eventually label as “good” or “bad” personality traits are not moral properties encoded in the brain, but observable outcomes of this early regulatory development. Understanding personality in this way shifts the question from judgment to development, and from ethics to neurobiological regulation.
