Dynamics in the fine structure of schedule-controlled behavior.

The variability in the behavioral equilibrium established by six basic schedules was characterized. The measures were the pause preceding the first response in each interreinforcement interval; the mean rate of responding in each interreinforcement interval; and the relative frequency of each interresponse time. The temporal windows ranged across the 780-session exposure, across a session, and across the interreinforcement interval. A display of individual interresponse times as a function of time in the interreinforcement interval indicated clear recurrent responding at somewhat less than 3 Hz in every bird, even after extended exposure to a schedule and regardless of the contingency. No strong sequential dependencies in the interresponse-time distributions were identified. A simulator, based on a simple recurrent pulser, was presented that produced output similar to the obtained data. An archival data base of the behavior chronically maintained by the simple schedules was also generated.     

Growing Points for Coparenting Theory and Research

Though the study of coparenting is still in its infancy, an explosion of coparenting research is in the wings. This paper identifies several emerging issues in coparenting theory and research to guide work in the years ahead, including issues in definition, conceptualization, and measurement; the interface between coparenting and adult development; and conceptual benefits that will accrue from studies of interadult coordination across diverse cultures and family systems. We emphasize that theory must lead empirical efforts, that across family systems the strongest coparental alliances are likely to be those in which the coparents both experience and provide support and solidarity for one another's parenting efforts with the children, and that measurement approaches need to be expanded so as to capture more comprehensively each family's organizational cooparenting structures and themes.     

Embodied and Embedded Morality: Divinity, Identity, and Disgust

Our understanding of human morality would benefit from an integrated interdisciplinary approach, built on the assumption that human beings are multidimensional unities with real, irreducible, and mutually interdependent spiritual, relational, emotional, rational, and physiological aspects. We could integrate relevant information from neurobiological, psychosocial, and theological perspectives, avoiding unnecessary reductionism and naturalism. This approach is modeled by addressing the particular limited role of disgust in morality. Psychosocial research reveals disgust as a universal emotion that enables evaluation and regulation of certain moral behaviors and is involved in cultural identity. Theologically, many religious traditions, including the Judeo‐Christian, use disgust in conjunction with moral codes designed to preserve purity and communal identity as the people of God. The concept of natural moral law suggests that morality is embodied in human nature. Neurobiology is beginning to trace the neural circuitry involved in disgust and in moral evaluation, suggesting that emotions are a necessary basis for moral judgment and revealing intriguing relationships between disgust, morality, and other aspects of the psyche. Several problems that arise within these disciplines and at their intersections are identified. Extension of the model to other aspects of human morality would further illuminate our understanding of morality without sacrificing its complexity and richness.     

Nominalizing Quantifiers

Quantified expressions in natural language generally are taken to act like quantifiers in logic, which either range over entities that need to satisfy or not satisfy the predicate in order for the sentence to be true or otherwise are substitutional quantifiers. I will argue that there is a philosophically rather important class of quantified expressions in English that act quite differently, a class that includes something, nothing, and several things. In addition to expressing quantification, such expressions act like nominalizations, introducing a new domain of objects that would not have been present in the semantic structure of the sentence otherwise. The entities those expressions introduce are of just the same sort as those that certain ordinary nominalizations refer to (such as John's wisdom or John's belief that S), namely they are tropes or entities related to tropes. Analysing certain quantifiers as nominalizing quantifiers will shed a new light on philosophical issues such as the status of properties and the nature of propositional attitudes.     

Index for Volume 24

In this article, the development of the increasingly differentiated control of the joints necessary to transform the spontaneous leg movements of early infancy into adaptive and functional actions is described. The hypothesis—that increasing joint control requires the capability for disassociation of joint action, the active modulation of joint stiffness, and a transition from proximal to distal control of the joints—is proposed. Kinematic and kinetic analyses of the vertical kicks of infants 2 weeks, 3 months, and 7 months of age (as well as a comparative group of adults) indicated increasing joint independence as well as phase-dependent and joint-dependent control modifications. The kicks of the younger infants were dominated by a proximal control strategy and minimal adjustments of the limb energetics during the flexion and extension phases of the kick. By 7 months of age, much larger modulations of the kick phases were observed as well as increasing evidence of distal control. These results revealed kinematic and kinetic patterns of emerging limb control between 2 weeks and 7 months of age.     

Social Orientation of Students in the Israeli State High School System

In this study, we focused on the relationship between schools differing in their ideologies, beliefs, and environments and students' social orientations. Three research instruments, each examining different social orientations, were administered to 331 11th-grade students attending a random sample of national-religious and national-secular high schools in the Israeli state educational system. The results indicated that students in the national-religious sector had a more conservative social orientations profile than national-secular sector students, who tended to have more liberal and optimistic social orientations.     

Choosing the best means to an end: The influence of ingroup goals on the selection of representatives in intergroup negotiations

According to Scheepers, Spears, Doosje, & Manstead (2006), instrumental goals refer to the maximization of profit whereas identity goals are associated with the attainment of a positive social identity. In two experiments, we show that when negotiations are purely instrumental individuals prefer pro-outgroup deviants as representatives (Experiments 1 and 2). In contrast, when negotiations are identity-related, group members increase their preference for normative (Experiments 1 and 2) and pro-ingroup deviants (Experiment 1). Furthermore, these goals also impact perceptions of typicality of group members. Taken together, these results suggest strategic acceptance of deviance when the goal is to bring the other party to concede and increased preference for normativity when identity is the group's main preoccupation. We discuss implications of these results for research on negotiation as well as on the influence of the intergroup context on intragroup dynamics.     

Realismo,Animismo y Teoría de la Mente: características culturales y universales del conocimiento mental

Resumen

Este estudio pretende evaluar la universalidadde la teoría de la mente en niños de tres culturas—la zapoteca, la española y la regiomontana—y a su vez, comparar sus concepciones sobre el realismo y el animismo, conocimiento que está marcadamente influido por principios o sistemas culturales. Se utilizaron dos tareas de teoría de la mente (la tarea de creencia falsa de primer y de segundo orden de recursividad) para evaluar los rendimientos de los niños en dos edades distintas; y otras dos tareas para valorar el realismo y el an imismo. Los resultados de este estudio revelan el carácter universal de la competencia de la teoría de la mente y su coexistencia con concepciones culturales y particulares sobre lo mental. Se discute la naturaleza de la psicología natural y de la psicología popular.