Read: http://www.nature.com/nsu/020114/020114-3.html I don't know that I agree with this interpretation of the results. I think it could have a lot less to do with evolution and more to do with psychology. I'm glad they are stressing "evolution may have taught us" rather than making a hard and fast conclusion. My reason for doubting their interpretation is that I pause whenever someone places the reasoning for a specifically human type of behavior on the role of genes & evolution. (I call this being-nice-to-namesakes specifically human simply because it isn't exhibited, can't be exhibited, among the other animals of the world, as they aren't aware of their names when they have them at all.) Evolution takes a long time to work its magic. A mutation must come into the population; a new evolutionary stable state must be reached. I don't know how likely it is that a gene has entered our genepool predisposed to helping namesakes. After all, most of our genes have evolved over millions of years - but how long have we had first and last names? I don't actually know the answer to this but I'd imagine names would have been given to people once they became able to communicate - yes, it was a long time ago, but not that long ago on an evolutionary timescale. Again, I think it's more a psychological issue, this helping others with the same name. What do others think?