Have you ever seen a couple walking down the street and thought they looked alike? Maybe you’ve spoken to a particularly well-matched couple at a party and noticed they gave the same answers to questions or even finished each other’s sentences. This is not a coincidence: it’s science! Researchers Angela Bahns (Wellesley College) and Chris Crandall (University of Kansas) co-authored a study titled, “Similarity in Relationships as Niche Construction,” which was published in the current issue of the Journal of Personality and Social Psychology. What they found reinforces something our matchmakers have known since the inception of Kelleher International: people do not necessarily change each other over time. Instead, people look for someone who is already similar to them.