19 Facts About Christine Ladd-Franklin

Christine Ladd-Franklin was an American psychologist, logician, and mathematician.

Christine Ladd-Franklin published six items in The Analyst: A Journal of Pure and Applied Mathematics and three in the American Journal of Mathematics.

Christine Ladd-Franklin held a fellowship at Johns Hopkins University for three years, but the trustees did not allow her name to be printed in circulars with those of other fellows, for fear of setting a precedent.

Christine Ladd-Franklin wrote a dissertation "On the Algebra of Logic" with Peirce as her thesis advisor.

The other, Margaret Christine Ladd-Franklin, became a prominent member in the women's suffrage movement.

Christine Ladd-Franklin died on March 5,1930 in New York, New York.

Christine Ladd-Franklin was able to work in the laboratory of Hermann von Helmholtz, where she attended his lectures on theory of color vision.

One of the major contributions that Christine Ladd-Franklin made to psychology was her theory of color vision, which was based on evolution.

Christine Ladd-Franklin observed that the most highly evolved part of the eye is the fovea, where, at least in daylight, visual acuity and color sensitivity are greatest.

Christine Ladd-Franklin assumed that peripheral vision was more primitive than foveal vision because night vision and movement detection are crucial for survival.

Christine Ladd-Franklin concluded that color vision evolved in three stages: achromatic vision, blue-yellow sensitivity and red-green sensitivity.

Christine Ladd-Franklin was the first woman to have a published paper in the Analyst.

Christine Ladd-Franklin was the first woman to receive a Ph.

Christine Ladd-Franklin was among the first women to join the American Psychological Association in December 1893.

From 1894 to 1925, Christine Ladd-Franklin presented ten papers at APA meetings.

Christine Ladd-Franklin was the first woman member of Optica in 1919 - member number 118.

In 1959, Christine Ladd-Franklin joined Charlotte Moore Sitterly, Dorothy Nickerson, Gertrude Rand, Louise L Sloan, and Mary E Warga as the five women part of the first Optica Fellow class.

Christine Ladd-Franklin remained a member of both scientific societies until her death.

Christine Ladd-Franklin was a prominent member of the women's rights movement.