Rational thought and moral choice

If we have more time to think, are we more likely to make the selfless choice?  A new study of the sinkings of the Titanic and Lusitania seems to indicate as much.  Is this evidence of "the presence of the divine?"  Does it show that the intellect can be altruistic when it has a chance to trump instinct?  Or does it show that we're "hardwired for empathy?"  (Or maybe just that the men on the Titanic were more noble than the men on the Lusitania?)