She became interested in the history of the Grandmothers of the Plaza de Mayo, research that she published in a book in English in the United States, her country of residence.
She was a co-founder of New Words Bookstore, the Women's Community Cancer Project, and Science for the People Rita Arditti was born in Buenos Aires on 9 September 1934.
After reading their 1985 book Botín de Guerra (Spoils of War), she was deeply affected by the disappearance of babies carried out by the Argentine government.
In 1999, the City of Cambridge conferred its Peace and Justice Award, and the Union Institute & University made her a faculty member emeritus for her 30 years of experience there.
When she was attending Barnard College, Arditti met Mario Muchnik, an Argentine who was studying at Columbia, and they began an exchange of correspondence.
This led her to participate in various conferences on the subject, to keep a personal diary about the development of her disease, and to co-found the Women's Community Cancer Project.