During what historical period in Europe was the role of reason de-emphasized in the study of mental illness?

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The Middle Ages saw a de-emphasis on the role of reason in the study of mental illness, as it was believed to be caused by supernatural forces such as possession by demons. This period saw an increase in the use of exorcism and religious rituals as treatments for mental illness, rather than a focus on rational explanations and scientific methods.

During What Historical Period in Europe Was the Role of Reason