Alexander believes his experiments shows that animal self-administration studies provide no empirical support for the theory of drug-induced addiction, and that the theory has no other basis in empirical science, although it has not been disproven.
His experiments shows that animal self-administration studies provide no empirical support for the theory of drug-induced addiction, and that the theory has no other basis in empirical science, although it has not been disproven. This is what Alexander believes.