Adaptive Dynamics of the Leg Movement Patterns of Human Infants: I. The Effects of Posture on Spontaneous Kicking

This is the first of two articles in which we describe how infants adapt their spontaneous leg movements to changes in posture or to elicitation of behaviors by a mechanical treadmill. In this article, we compare the kinematics of kicks produced by 3-month-old infants in three postures, supine, angled (45°), and vertical, and examine the changes in muscular and nonmuscular force contributions to limb trajectory. By manipulating posture we were able to assess the sensitivity of the nascent motor system to changes in the gravitational context. The postural manipulation elicited a distinct behavioral and dynamic effect. In the more upright postures, gravitational resistance to motion at the hip was 4 to 10 times greater than resistance met in the supine posture, necessitating larger muscle torques to drive hip flexion. Kicks produced in the vertical posture showed a reduction in hip joint range of motion and an increase in synchronous joint flexion and extension at the hip and knee. At the same time, hip and knee muscle torques were also more highly correlated in kicks performed in the vertical than in the supine or angled posture. This increased correlation between muscle torques at the hip and knee implicates anatomical and energetic constraints—the intrinsic limb dynamics—in creating coordinated limb behavior out of nonspecific muscle activations.     

Marburg revisited

Michael Pye (ed.), Marburg revisited, institutions and strategies in the study of religion, Marburg, diagonal-Verlag, 1989, DM45,00/$30.00     

Relational aggression in marriage

Drawing from developmental theories of relational aggression, this article reports on a study designed to identify if spouses use relationally aggressive tactics when dealing with conflict in their marriage and the association of these behaviors with marital outcomes. Using a sample of 336 married couples (672 spouses), results revealed that the majority of couples reported that relationally aggressive behaviors, such as social sabotage and love withdrawal, were a part of their marital dynamics, at least to some degree. Gender comparisons of partner reports of their spouse's behavior revealed that wives were significantly more likely to be relationally aggressive than husbands. Structural equation modeling demonstrated that relational aggression is associated with lower levels of marital quality and greater marital instability for both husbands and wives. Implications are drawn for the use of relational aggression theory in the future study of couple conflict and marital aggression Aggr. Behav. 36:315–329, 2010. © 2010 Wiley‐Liss, Inc.     

Easier is not always better: The moderating role of processing type on preference fluency

Prior research has shown that preference fluency (i.e., the subjective feeling that forming a preference is easy or difficult) systematically influences consumer choices. When deciding on an option feels difficult, or requires effort, consumers are likely to select a different option or defer the decision. We find that under conditions of narrative processing, difficulty in processing can actually improve preferences because more effort leads to more transportation, or immersion, into the story, thus enhancing brand evaluations. Three experiments demonstrate that the effect of preference fluency reverses when consumers think about a brand as part of a story.     

Mass Atrocities,Retributivism, and the Threshold Challenge

The purpose of this paper is to direct attention to a challenge—referred to as the threshold challenge—facing a non-absolutist retributivist view on international criminal justice. It is argued, on the one hand, that this challenge constitutes a practically pertinent problem for the retributivist approach to the punishment of mass crimes and, on the other, that it is very hard to imagine any principled way of meeting this challenge.     

Reconsidering The Love of Art: Evaluating the Potential of Art Museum Outreach

ABSTRACT

Art museums have long been identified as bastions of social and cultural exclusion. This conclusion was best evidenced by the large-scale 1967 French study by Bourdieu and Darbel demonstrating the exclusionary nature of The Love of Art. However, in recent years there have been increasing efforts to reach out to a broader range of visitors beyond conventional audiences. The present study investigates the impacts of an outreach program at a U.K. art museum, which sought to engage socially excluded young mothers. This study uses ethnographic research methods on a longitudinal basis to develop qualitative insights about the program seeking to mitigate cultural exclusion. Although the study's findings uphold many longstanding critiques of art museums’ conventional approaches, the study also indicates that carefully designed outreach activities can overcome such limitations and enhance cultural engagement. Thus, art museums’ limited appeal is tied to problematic public engagement practices that can be changed.     

Parental Emotional Response to Children’s Traumas

To better understand how parents react to their child’s trauma exposure and evaluate whether different reactions are related to different types of traumas, 120 parents (79.2% mothers, 18.3% fathers, 2.5% other caregivers) were asked about their emotional reactions related to their child’s self-reported worst trauma. Emotional reactions were assessed with the Parental Emotional Reactions Questionnaire (PERQ). Parents reported high levels of distress and guilt. Furthermore, there was a significant relationship between type of trauma and parents’ overall emotional reactions. Parental distress was equally endorsed among the different trauma groups. Parents of children who experienced intrafamilial violence and extrafamilial sexual abuse reported the highest levels of guilt, and child exposure to intrafamilial violence was associated with higher levels of parental shame.