Education
From 1903 to 1909, Klaesi studied medicine in Zurich, Kiel and Munich. In 1912 he received his doctorate in Zurich and was then trained as a psychiatrist.
From 1903 to 1909, Klaesi studied medicine in Zurich, Kiel and Munich. In 1912 he received his doctorate in Zurich and was then trained as a psychiatrist.
From 1923 to 1926 he was chief physician at the Psychiatric University Clinic in Basel, and later head of the private clinic Knonau. From 1933 he was extraordinary Professor, 1936-1953 full professor of psychiatry at University of Bern (rector from 1950 to 1951 ) and director of the Psychiatric Clinic Waldau. Klaesi was known for the introduction of the Sleep Treatment (1921).
He set up colonies for the sick, and in 1934, he founded the psychiatric clinic of Berne.
As a teacher he influenced the training of physicians significantly. Klaesi wrote also poems and plays.
German Academy of Sciences Leopoldina.