According to Rebecca L. Ammon in "The Osprey Journal of Ideas and Inquiry at UNF Digital Commons" (2004), the Parental Investment Model based on parental investment theory posits that more men than women ratify sex differences in jealousy. In addition, more women over men consider emotional infidelity (fear of abandonment) as more distressing than sexual infidelity. According to the attachment theory, sex and attachment style makes significant and unique interactive contributions to the distress experienced. Security within the relationship also heavily contributes to one's level of distress. These findings imply that psychological and cultural mechanisms regarding sex differences may play a larger role than expected. The attachment theory also claims to reveal how infants' attachment patterns are the basis for self-report measures of adult attachment. Although there are no sex differences in childhood attachment, individuals with dismissing behavior were more concerned with the sexual aspect of relationships. As a coping mechanism these individuals would report sexual infidelity as more harmful. Moreover, research shows that audit attachment styles strongly conclude with the type of infidelity that occurred. Thus psychological and cultural mechanisms are implied as unvarying differences in jealousy that play a role in sexual attachment.