When you feel as if someone poses a threat to your relationship (whether they do or not), jealousy likely creeps in. Researchers note that jealousy is characterized by fear of loss, distrust, or anger, as one is worried about losing a relationship due to a rival.1 Essentially, jealousy serves as a mechanism by which the person remains hypervigilant to protect his/her relationship from potential intruders. One common scenario which can elicit jealousy is when your partner is in the presence of available and datable others, resulting in the sense that a partner may be unfaithful.
In a previous article, I discussed theories of infidelity, focusing on the different perspectives offered by evolutionary psychologists and social-role theorists. The dispute between these two perspectives focuses on the difference in how distressed is measured. One approach is to use “forced choice” alternatives, which include answer choices in which a participant is to pick which is more upsetting from two pre-selected responses: your partner forming an emotional attachment with another individual (emotional infidelity) or your partner having sex with this other individual (sexual infidelity). Evolutionary psychologists have used this forced-choice paradigm to show that men are more upset by sexual infidelity, while women are more distressed by emotional infidelity.2