Sidonie Reiss (1882-1970) was an Adlerian psychotherapist and child psychologist.
After attending a Berlin lecture by Alfred Adler in the early 1920s she joined the local Adlerian society and underwent training analysis with Fritz Künkel.
In 1933 she emigrated to the Netherlands, where she attended an Amsterdam lecture series delivered by Adler.
[2] Her German typescript Lebenseinstellung und Lebensumstellung was translated into English by Bernard Miall, and published as Mental Readjustment (1949).
[3][4] Reiss worked as a psychotherapist at the Alfred Adler Mental Hygiene Clinic in New York.