english: It didn't work very well on the schizophrenics, but it was pretty clear in the '30s and by the middle of the '40s that electroconvulsive therapy was very, very effective in the treatment of depression.
non_english: Het werkte niet zo goed bij schizofrenen, maar het was in de jaren 1930 tot midden 1940 vrij duidelijk dat elektroshocktherapie zeer effectief was bij de behandeling van depressie.