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Dorothy Stein

American psychologist and computer scientist (1931–2019)

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Early life

She was born Dorothy Josephine del Bourgo in Newark, New Jersey. She was the first of two daughters of Jacob Del Bourgo, a civil engineer, and Charlotte Del Bourgo (née Styler). Jacob was a Sephardic Jew born to a family of pearl traders, and Charlotte was of Ashkenazi descent, fleeing Eastern Europe as a youth. The two sisters were raised as culturally Jewish but not particularly devout, and Dorothy had fond memories of bacon as a special treat during the Great Depression.

Jacob Del Bourgo was unable to find work in the United States for some time, and so moved the family to Venezuela. In the aftermath of World War II, engineers became more in demand and employment discrimination against Jews declined, allowing the family to settle in New York. Stein graduated high school early and attended Cornell University, earning her degree in Physics in 1951. Work on her second degree, involving experiments with a cloud chamber, was interrupted by meeting and eventually marrying Paul Kellogg, then completing his PhD in physics at Cornell.

After a year in Copenhagen at the high energy physics institute led by Niels Bohr, the couple returned to America, where in 1955 Stein worked on one of the first computers, calculating missile trajectories, while her husband worked in nuclear physics and the new field of solar plasma. In 1956, they moved to Minnesota, where Paul became a professor in the physics department of the University of Minnesota. There Dorothy gave birth to their two sons, Kenneth in 1956 and David in 1959.

Dorothy and Paul divorced in 1964, and two years later Dorothy married Burton Stein, a professor of Indian history. In 1968 Dorothy finished a PhD in child psychology that established, using dichotic listening techniques, that syllables are not phonemes, but are psychologically real (the precise implications of this remain indistinct).

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