One of the benefits of growing older is having more time to spend with your friends and loved ones, but in an ironic twist, most individuals’ social circles begin to shrink as they age. This phenomena was once thought to be due to our own awareness of our limited future time — we are aware of our finite lifespan and choose to spend our little time left with only a select few. But a recent study on the behavioral patterns of monkeys suggests there may be another far more innate explanation for this behavior.
