Have you ever wondered why old couples look alike so much that they could even be confused for siblings? Well, here’s an answer to that, as provided by scientists.
Trying to understand what could be responsible for this phenomenon, psychologist Robert Zajonc of the University of Michigan conducted his popular ‘Facial Likeness’ study in 1987 and found that couples who have been together for as long as 25 years looked so similar in appearance that participants in the study did not have any trouble pairing them together despite having no prior knowledge of their marriage.
During the study, Zajonc and his team asked volunteers to look carefully at photographs of men and women and match them based on facial similarity. The researchers found out that couples who'd been married for 25 years were rightly paired together a lot.