Charlotte Danziger was born in Vienna, Austria, the daughter of a pharmacist and his wife. She graduated from the teacher training course of the Pedagogical Institute of Vienna and also studied psychology at the University of Vienna, where she met developmental psychologist Charlotte Bühler. Karl Bühler supervised her doctoral thesis, published in 1930 as The Relationship between the Foster Mother and Child Care. She chose to use the diminutive form of her name, Lotte, in order to differentiate herself from Charlotte Bühler, whose assistant she became after 1931, and altered her surname to Danzinger. From 1935 to 1937, she worked in London as co-director of the Parents' Association Institute. After returning to Austria in 1937, she married Johann Schenk, an engineer, with whom she had two children. After World War II, she worked for the Pedagogical Institute of Vienna to standardize the development of tests for schoolchildren. In 1948 she took over the management of the newly-founded school psychological counseling center of the City of Vienna. She later taught developmental psychology at the University of Innsbruck and the University of Graz. Her 1969 book Developmental Psychology was built on her university lectures and became a standard work for educators and psychologists for many years.