Born Judith Arlene Resnik on April 5, 1949, in Akron, Ohio, to first-generation Jewish Russian parents, Judith was a bright, curious child who, by kindergarten, could both read and solve simple math problems. Her father, Marvin, was an optometrist and a part-time cantor when he married Sarah Polensky, a former legal secretary from Cleveland Heights. After Judith was born, the Resniks had a son, Charles.
The Resniks were an upper-middle-class Jewish family devoted to their religion and to all learning. Gifted in math and science, Resnik excelled in academics from a young age. She also attended Hebrew school and, by her teenage years, was an accomplished classical pianist. Teachers and friends described her as extremely bright, disciplined, perfectionistic, and personable.
With a score of 800 on her math SAT tests, Resnik was accepted to Carnegie Tech (now Carnegie-Mellon) in Pittsburgh, where she majored in electrical engineering. After graduating in 1970, she married Michael Oldak, a fellow engineering student. The couple moved to New Jersey, where Resnik was employed in the missile and surface radar division of RCA. In 1971, they moved to Washington, D.C. Resnik received her master’s degree in engineering from the University of Maryland, and began work on her Ph.D. while employed as a biomedical engineer in the neurophysics lab at the National Institutes of Health. She and Oldak divorced in 1975.