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The times at which orientation for name, age, year of birth and current year was reestablished after E.C.T. are listed for 11 depressive patients treated by standard steep-wave electroplexy. It is suggested that orientation for age is not entirely dependent upon the presence of the ability to reason arithmetically, as in most of these patients orientation for age returned before orientation for both facts needed for such arithmetical inference, namely year of birth and current year.