 Harris went on to lead the speech production program at Haskins Laboratories.In the 1960s Harris and colleague Peter MacNeilage were the first researchers in the U.S. to use electromyographic techniques, pioneered at the University of Tokyo, to study the neuromuscular organization of speech.In the 1970s, 1980s and 1990s Katherine Harris continued her pioneering work on speech production with colleagues Gloria Borden, Frederica Bell-Berti and many others.