Dear Editor: I have learned that for the first time since the early 1980s, the UW-Madison has approved maternal deprivation experiments on baby monkeys. Maternal deprivation experiments were conducted for two decades at the university by Harry Harlow and his many students. After Harlow?s death, even some of his own students admitted that they should not have been allowed to continue for so long. Some of them have lamented their own silence. This angst and regret was documented by Deborah Blum in her biography of Harlow, ?Love at Goon Park.?