Semantics for the Logic of Essence

This paper provides a possible worlds semantics for the system of the author's previous paper The Logic of Essence. The basic idea behind the semantics is that a statement should be taken to be true in virtue of the nature of certain objects just in case it is true in any possible world compatible with the nature of those objects. It is shown that a slight variant of the original system is sound and complete under the proposed semantics.     

Theorizing Hyphenated Selves: Researching Youth Development in and across Contentious Political Contexts

In this article, we present social–psychological notions about critical consciousness, change, and power that we consider foundational to the study of youth under siege. Relying on Lewin's field theory and Du Bois' dual consciousness, and critical psychology literature on sociopolitical understandings of conflict, we propose a new conceptual and theoretical framework that we call 'hyphenated selves' to better understand youth identity in and across contentious political contexts. Specifically, we report briefly on our own work with Muslim-American youth in the US post-9/11 and post–'war on terror' as a context from which we may reflect on a social psychology of youth identity and global conflict. At the same time, we want to think forward about critical methods for researching complicated subjectivities across politically and culturally contentious terrains.     

The emerging dialogue between psychoanalysis and neuroscience: neuroimaging perspectives

Current progress in the cognitive neurosciences is highly relevant to the development of psychoanalytic theory and practice. Neuroscience is today becoming mature enough to provide empirical biological approaches for the investigation of psychoanalytic models and observations. The current state of functional neuroimaging techniques is reviewed, selected paradigms and findings relevant to psychotherapy research are presented, and ways to pursue the dialogue between psychoanalysts and neuroscientists are discussed, as are some related obstacles and pitfalls. The emerging dialogue between psychoanalysts and neuroscientists may help not only to reestablish a solid position of psychodynamic theory and treatment in contemporary medicine, but also to bridge the division between "psychological" and "somatic" treatments, and gain important insights into the mind-brain relationship.     

Children's working-memory processes: a response-timing analysis

Recall response durations were used to clarify processing in working-memory tasks. Experiment 1 examined children's performance in reading span, a task in which sentences were processed and the final word of each sentence was retained for subsequent recall. Experiment 2 examined the development of listening-, counting-, and digit-span task performance. Responses were much longer in the reading-and listening-span tasks than in the other span tasks, suggesting that participants in sentence-based span tasks take time to retrieve the semantic or linguistic structure as cues to recall of the sentence-final words. Response durations in working-memory tasks helped to predict academic skill and achievement, largely separate from the contributions of the memory spans themselves. Response durations thus are important in the interpretation of span task performance.     

The effect of type of behavior on behavior change caused by type of upcoming food substance

Previous research suggests that rats will decrease their consumption of a low-valued substance if a high-valued one will soon be available (anticipatory contrast), but will increase their rate of operant responding for a low-valued substance if a high-valued one will soon be available (positive induction). The present experiments tested whether rats would increase their operant rate of licking or lever pressing for 1% liquid-sucrose reinforcement when 32% sucrose reinforcement was upcoming in the same session. Results indicated that upcoming 32% sucrose increased rates of lever pressing for 1% sucrose, but did not produce similar increases in rates of licking. In fact, upcoming 32% sucrose significantly reduced lick rates in Experiment 2. The present results suggest that the different changes in behavior may be linked to the specific response that the subjects must engage in to obtain the reward (i.e., licking vs. lever pressing), and not to the function of the behavior (i.e., consummatory vs. operant) or to how frequently the substances are available (i.e., continuously vs. intermittently).     

A comparison of the psychological profiles of teenage mothers and their nonmother peers: I. Ego development.

Two projective techniques were employed to explore the psychological characteristics of teenage mothers who were found, in a previous study, to have experienced more traumatic childhoods than the nonmother control group. Part I, presented here, investigated ego development using the Loevinger Sentence Completion Test. (Part II, responses to a set of TAT cards, will appear in a subsequent issue of Adolescence.) In comparison with the nonmothers, teenage mothers demonstrated more mature ego development. This is in distinct contrast with most reports in the literature, and the ramifications of these results are discussed. In addition, content analyses of the responses to the Sentence Completion Test confirm the highly involved mother-daughter and negative father-daughter relationships found in the previous study with this sample.     

Modeling college women's perceptions of elite leadership positions with Social Cognitive Career Theory

The utility of Social Cognitive Career Theory (SCCT; Lent, Brown, & Hackett, 1994) for predicting college women's interests and goals for positions of elite leadership was examined with 156 undergraduate women at a public university. They completed measures of elite leadership self-efficacy expectations, outcome expectations, interests, and goals. Results supported SCCT as a theoretical framework for understanding internal factors that may contribute to women's elite leadership interests and goals. Self-efficacy and outcome expectations for elite leadership positions related positively to interests and goals for such positions, and self-efficacy and outcome expectations each contributed unique variance to the prediction of elite leadership interests. Outcome expectations partially mediated the relation between elite leadership self-efficacy and interests, interests partially mediated the relation between elite leadership outcome expectations and goals, and the combination of elite leadership interests and outcome expectations completely mediated the relation between self-efficacy for elite leadership positions and elite leadership goals.