Psychological determinism is the view that psychological phenomena are determined by factors outside of a person's control. Dr. Daniel Bader discusses two forms of psychological determinism:
Orectic psychological determinism is the view that we always act upon our greatest drive. This is often called psychological hedonism, and if the drive is specified for self-interest, psychological egoism. Rational psychological determinism claims that we always act according to our "strongest" or "best" reason.
See also Free will Determinism Moral nihilism Moral skepticism
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