After graduating, Rolf continued to work with Levene at the Rockefeller Institute for Medical Research in New York City. In 1918, she was promoted to assistant in the chemistry lab. In 1922, two years after having received her PhD from Columbia, Rolf was raised to associate, then the highest non-tenured position for a scientist at Rockefeller. From 1919 to 1927, she published 16 scholarly journal papers, mostly in the
Journal of Biological Chemistry. Her research was primarily laboratory studies on biochemical compounds
lecithin and
cephalin. With the exception of her doctoral dissertation, all of her published work was co-authored with Levene. Esalen was the epicenter of the
Human Potential Movement. Rolf exchanged ideas with countercultural figures including
Fritz Perls. In 1971, Rolf's teaching activities were consolidated under the Rolf Institute of Structural Integration. As of 2010, it had graduated 1,536 practitioners, including some trained in Germany, Brazil, Japan, and Australia, in addition to the main program in Boulder, Colorado. In 1990, a group of senior faculty split off to found the Guild of Structural Integration, which had 628 graduates as of 2010. About two dozen schools were teaching Structural Integration in 2011. Standards for the field of Structural Integration are maintained by a professional membership organization, the International Association of Structural Integration. ==Structural Integration ==