Dr. Herbert I. Kupper, 79, a co-founder and dean of admissions of the Los Angeles Psychoanalytic Institute. Born in Passaic, N.J., Kupper was educated at the University of Louisville, Johns Hopkins University Medical Center and Cornell Medical Center. He treated returning soldiers as a Navy captain during World War II, and pioneered in work on post-traumatic stress disorder. Kupper wrote a book, "Back to Life," about that work in 1945. Moving to Los Angeles shortly after the war, he taught psychiatry at UCLA and psychoanalysis at the institute, and practiced psychiatry and psychoanalysis in Beverly Hills. On Tuesday in Studio City of an apparent heart attack.