A previous piece of research, to which that study was following up, was conducted by a very widely respected, older doctor in NYC. He was a department head at a major hospital with a 40-year work history that lacked any controversy. He published a study that said women benefit hormonally from semen, and immediately the feminists descended on him. They picketed his workplace and harassed him on the street. How dare he suggest that women need men in any way! I don't think the old man ever really understood why they were so mad. He quietly retired so that the feminists would leave his coworkers alone.