In general, I've found empirical psychological studies to be far more practical than most Objectivist ideas. They are simply impractical and cannot be workably used by anyone. Its part of the reason why Objectivism has failed to spread beyond a dedicated fanbase (arguably a cult).
Indeed, some studies findings seem to contradict Objectivist ideas about ethics (honesty for example). A few points:
1) I particularly find the Objectivist argument for "productiveness" weak. For example, there is no real or practical reason why a man or woman who inherits a billion dollars should not spend a l