To sum up, the poor practices relative to modern standards in combination with the context of a compensatory incentive in the retrospective data material raise serious questions about the representativeness of the data examined in the two papers by Larsen. These concerns have been addressed in more detail in a Letter to Editor of History of Psychiatry about Dr. Larsen’s 2016 paper (15). Sadly, the articles include no reflections on the cultural and political forces impacting this research in the 1960s or on the serious promise that the responsible use of these substances may have for mitigating the human suffering in the future.
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