Using a sample of 5,660 Finnish twins and their siblings, a recent study by Kupfer et al., published in the January issue of Evolution and Human Behavior, examines the genetic and environmental causes ...

With Christmas and New Year’s Eve around the corner—two dates that are the most popular times for getting engaged, according to the BBC—I thought it might be nice to provide some relationship tips for ...

Jealousy is an uncomfortable emotion, but it's fairly normal. We all have minor insecurities and sensitivities that can cause us to feel jealous from time to time. Sometimes it arises when a person ...