We review the jealousy literature and present our Dynamic Functional Model of Jealousy, which argues that jealousy evolved and has its own unique motivational state aimed at preventing others from usurping important relationships. It has a core form that exists in infants and nonhuman animals and an elaborated form in humans that emerges as cognitive sophistication develops. The DFMJ proposes that jealousy is an unfolding process with early and late phases that can be differentially impacted by relationship and personality factors. (...) It also notes the importance of looking at multiple concomitants of jealousy, including action tendencies. We discuss how jealousy fits with current emotion theories and suggest that theories of specific emotions need to be broadened. (shrink)

We clarify aspects of our Dynamic Functional Model of Jealousy in response to D’Arms and Stets. Our model proposes that jealousy is an evolved motivational state that arises over threat by a rival to one’s relationship or some aspect of one’s relationship. The formation or loss of relationships rarely occurs instantaneously. Therefore, we argue that jealousy, whose goal is to remove or reduce the rival threat, can occur over a longer time course than is often assumed in theories of specific (...) emotions. We further suggest that other emotions such as grief and fear also can occur over extended periods. This raises challenges for emotion theories that assume that emotions must be short-lived. (shrink)

The proposal that there are specific adaptations for the expression and detection of pain appears premature on both conceptual and empirical grounds. We discuss criteria for the validation of a pain facial expression. We also describe recent findings from our lab on coping styles and pain expression, which illustrate the importance of considering individual differences when proposing evolutionary explanations.