Measuring Postural Sway in Sitting: A New Segmental Approach

Global measures of trunk sway are traditionally used even though the trunk comprises a multiple number of segments. The authors’ aim was to measure the seated sway of typically developing children using a multisegment approach. Twenty typically developing children divided into 2 groups, older and younger than 10 years old, participated in this study. The children sat unsupported for 30 s while their posture and sway were quantified using stereophotogrammetry. The tendency in both age groups was to sit with a backward tilted pelvis and a kyphotic trunk. The sitting position was most varied in the younger group. Marker sway amplitude and velocity in sitting were age dependent, with reduced sway amplitude and velocity with increased age for all segments. Anteroposterior intersegmental angular sway was not age dependent. The difference in marker sway in the anteroposterior direction for the younger group appeared to result from an equally stable trunk supported on a less stable pelvis. Mediolateral marker sway and intersegmental angular sway showed a clearer age dependency. Trunk postural control does not appear to differ between children older and younger than 10 years old, but sagittal plane pelvic stability can explain the increased sway reported in younger children.     

Transforming Social Regularities in a Multicomponent Community‐Based Intervention: A Case Study of Professionals’ Adaptability to Better Support Parents to Meet Their Children's Needs

This paper presents an in‐depth case study of the dynamic processes of mutual adjustment that occurred between two professional teams participating in a multicomponent community‐based intervention (CBI). Drawing on the concept of social regularities, we focus on patterns of social interaction within and across the two microsystems involved in delivering the intervention. Two research strategies, narrative analysis and structural network analysis, were used to reveal the social regularities linking the two microsystems. Results document strategies and actions undertaken by the professionals responsible for the intervention to modify intersetting social regularities to deal with a problem situation that arose during the course of one intervention cycle. The results illustrate how key social regularities were modified in order to resolve the problem situation and allow the intervention to continue to function smoothly. We propose that these changes represent a transition to a new state of the ecological intervention system. This transformation appeared to be the result of certain key intervening mechanisms: changing key role relationships, boundary spanning, and synergy. The transformation also appeared to be linked to positive setting‐level and individual‐level outcomes: confidence of key team members, joint planning, decision‐making and intervention activities, and the achievement of desired intervention objectives.     

Transgressing Motherhood: Media Reports on Infanticide

This article seeks to understand the discourses on motherhood elicited by media in news articles dealing with infanticide. Applying thematic analysis, we studied news and online comments of a Portuguese newspaper. The analysis of infanticidal mothers reports two different images of these mothers both constructed and profiled by the media and the readers. Women are more penalized based on their perversity, living in better economic conditions, being employed and married, whether by the media or by the readers. They are absolved in accordance with their mental illnesses or poor social and economic backgrounds.     

Interaction between the development of postural control and the executive function of attention

The authors examined the interaction between the development of postural control and the development of the executive function of attention in 13 children and 6 adults in dual-task conditions. Participants performed an attentionally demanding cognitive task and a postural task simultaneously. The authors equalized the attentional load of the cognitive task across age groups. Comparative changes in the center of pressure in dual- and single-task conditions indicated that dual tasks interfered with postural performance in the wide stance (WS) and the modified Romberg stance (RS). Children at 4-6 years of age (but not children at ages 7-12 years of age or adults) experienced postural control interference in both stance positions, but interference was greater in the RS (p = .018). For all participants, cognitive task performance in RS was unchanged from that in WS. The knowledge gained from the results of this study will contribute to the design and implementation of academic and preacademic programming for young children. Their performance of an intentionally demanding cognitive task would be enhanced by the provision of appropriately sized desks and chairs or their use of an alternate, less demanding position.     

Social Exchange and Emotional Investment in Work Groups

This study applied a social exchange perspective to examine three related aspects of work group behavior: individuals' assessment of the personal costs and rewards of group membership, the overall level of emotional investment in a group, and the external evaluation of group performance. Regression analyses of survey data from 28 ongoing student work groups (134 individuals) indicated that perceptions of personal rewards resulting from interaction over a ten-week period are an important precursor of emotional investment, defined as a relational orientation that encourages mutual caring, group loyalty, and commitment to the group as a whole. Consistent with our expectations, personal costs influenced neither emotional investment nor group performance after considering the effects of personal rewards. Emotional investment mediated the effects of personal rewards on externally rated group performance. Thus, emotional investment was a pivotal dimension of group effectiveness. Results extend our understanding of group behavior by acknowledging the relationship between personal and group development while confirming the compelling role of emotions in social exchange.     

Measuring home advantage in Spanish handball

Since Pollard established the system for analysing home advantage in 1986, it has been demonstrated and quantified in various sports, including many team sports. This study aims to assess whether home advantage exists in handball, using a sample of more than 19,000 Spanish handball league games. Results of the games played at home and away, the sex of the players, and the levels of the competition were included as variables. In Spanish handball, there was a home advantage of 61%, which means, on average, the team playing at home wins 61% of points available. This value varies according to sex and according to competition level, increasing as competition level decreases and season rank improves.