Declared relationship status on Facebook can serve as a public commitment and as an extra layer of a couple's security. However, the question arises: do those who report the relationship status feel stronger romantic love and jealousy toward their partners than those who do not share such information publicly? To test this assumption, profile information and questionnaire data of romantic love ...

The relation between sex hormones and responses to partner infidelity was explored in two studies reported here. The first confirmed the standard sex difference in relationship jealousy, that males (n=133) are relatively more distressed by a partner's sexual infidelity and females (n=159) by a partner's emotional infidelity. The study also revealed that females using hormone-based birth control...

Three studies tested the hypothesis derived from evolutionary psychological considerations of sex differences in the intentional object of romantic jealousy. In Studies 1 and 3, participants had to indicate in a forced choice whether their jealousy would be primarily directed towards the partner or the rival. In Study 2, participants rated separately the extent to which their jealousy would be ...

The current investigation examined the long-term prediction of sibling jealousy assessed in a laboratory-based paradigm on sibling relationship quality 2 1/2 years later. This multi-method longitudinal study included mothers, fathers, and two children from 35 families. Younger siblings were 16 months and older siblings were, on average, 4 years at Time 1. Positive longitudinal associations were...

The current research uses insights from evolutionary psychology and social cognition to explore the relationship between jealousy – both experimentally activated and chronically accessible – on men’s and women’s desire to start a family and invest in children. In our first two studies, primed infidelity threat led chronically jealous men and women to report a decreased interest in infants (Stud...

The study was an empirical examination of the relation of personality proneness to "problematic social emotions"--envy (Dispositional Envy Scale), jealousy (Interpersonal Jealousy Scale), and shame and guilt (Personal Feelings Questionnaire-2)--to maternal grief (Perinatal Grief Scale-33) following miscarriage, stillbirth, neonatal death, or infant/child death. The 441 women who participated in...

Why do some people become more jealous than others? Some people require emotional closeness before sexual intercourse, whereas others are less restricted sexually. Because restricted people may invest more in relationships, they may feel greater rejection and anger when jealous. We tested this hypothesis in a daily diary study of 50 heterosexual dating couples. Participants completed a sociosex...

It is commonly assumed that jealousy is unique to humans, partially because of the complex cognitions often involved in this emotion. However, from a functional perspective, one might expect that an emotion that evolved to protect social bonds from interlopers might exist in other social species, particularly one as cognitively sophisticated as the dog. The current experiment adapted a paradigm...