Modeling without representation

How can mathematical models which represent the causal structure of the world incompletely or incorrectly have any scientific value? I argue that this apparent puzzle is an artifact of a realist emphasis on representation in the philosophy of modeling. I offer an alternative, pragmatic methodology of modeling, inspired by classic papers by modelers themselves. The crux of the view is that models developed for purposes other than explanation may be justified without reference to their representational properties.     

Sisters of the Heart: How Women's Friendships Heal

In this article we focus on the healing aspects of women's intimate friendships with other women. In particular, we discuss the role of female neurohromone oxytocin “the love hormone” in the promotion of health and wellbeing among women. We assert that the intimate women friendship construct can enhance psychotherapy's healing and empowering functions. In this context, we examine how women's friendships can inform feminist psychotherapy. Moreover, we discuss the feminist therapeutic relationship as an intimate bond, and compare it with women's friendships. We conclude with the introduction of the special issue on “Sisters of the Heart: Women Psychotherapist Reflections on Female Friendships.”     

Dislike and Envy as Antecedents of Pleasure at Another's Misfortune

Previous research related to pleasure at another's misfortune has focused on the role of envy and competition in inducing such feelings. Additionally, some views assume that this emotion is restricted to mild misfortunes. In this paper, we propose that other-directed negative emotions (e.g., dislike and anger), independent of envy, can give rise to pleasure at another's misfortune and the misfortune can be severe when these other emotions are causal. In addition to providing support for this view in three studies, pleasure at another's misfortune was also associated with different factors when other-directed negative emotions as opposed to envy served as its eliciting condition. For example, given that dislike caused pleasure at another's misfortune, the misfortune was more likely to be perceived as deserved, any misfortune was pleasing, and the observer was more reluctant to help than given envy as the cause.     

Perceiver and relationship effects on perceptions of HIV status: A naturalistic study in a high drug use sample.

This article examines the effect of target, perceiver, and relationship characteristics on the perceiver's assessment that the target may be HIV seropositive (HIV+). A sample of 267 persons was recruited from low income, high drug use neighborhoods. Respondents (perceivers) were asked to name people (targets) with whom they had a social, drug sharing, or sexual relationship. Perceivers described 1,640 such relationships. Perceivers were asked about the targets' age, gender, and race/ethnicity, whether the targets were good-looking, their level of trust with the target, and how long they had known them. Perceivers were then asked to evaluate the chances that the target mentioned was HIV+. Two regression models were estimated on the 1,640 relationships mentioned. Model 1 included variables reflecting only target characteristics as independent variables. Model 2 included variables reflecting target characteristics as well as variables reflecting perceivers and perceiver-target relationship characteristics. The results showed that targets that were female, younger, and good-looking were perceived as being less likely to be HIV+. However, when accounting for perceiver and relationship effects, some of the target characteristic effects disappeared.