[2] In 1901, Geiger entered Pázmány Péter Catholic University as a scholarship student of Wlassits College of the National Women's Training Institute[2] and simultaneously began studying piano at the Budapest Academy of Music.

[1][4] A few months later, she married a fellow mathematics student, Pál Dienes[2][3] and the young couple spent the years 1906 and 1907 touring, traveling from Palermo to Tunis.

She published an original work in the Galilei Booklets synthesizing the ideas of Ivan Pavlov and the Würzburg School to present a reform on the way thought processes were viewed by psychologists.

[6] She was the first person in Hungary to put forth the idea of functional psychology and advocate it for childhood development as a means of reforming educational activities.

[2] In 1919, Dienes designed a reform program for women's sports for the Hungarian Soviet Republic, but the following year was exiled from the country[3] because of the White Terror violence.

Combining Bergson's theories that action, rather than passive thought, was fundamental to mental development, Dienes began to incorporate the ideas of Teilhard de Chardin and the influential priest Ottokár Prohászka into her philosophical writings.

[9][10] Prohászka advocated a philosophy which was both nationalistic and Christian, decidedly anti-Semtic and his influence caused Dienes to evaluate the role of religion and mysticism on the development of Hungarian thought.

[11] Dienes' choreographic works began by setting the verse of modern Hungarian poets, such as Endre Ady and Babits, to dance.

[12] By 1928 Dienes had founded, serving as co-president, the Movement Culture Association and the following year began offering a four-year teacher's courses to train professionals in the study of motion.

She worked on translations of John Locke's An Essay Concerning Human Understanding and Teilhard de Chardin's The Phenomenon of Man in the 1960s for the Hungarian Academy of Sciences.