Individuals with an advantageous position during a negotiation possess leverage over their partners. Several studies with adults have investigated how leverage can influence the coordination strategies of individuals when conflicts of interest arise. In this study, we explored how pairs of 7-year-old children solved a coordination game (based on the Snowdrift scenario) when one child had leverage over the other child. We presented a social dilemma in the form of an unequal reward distribution on a rotating tray. The rotating tray could be accessed by both children. The child who waited longer to act received the best outcome, but if both children waited too long, they would lose the rewards. In addition, one child could forgo the access to the rotating tray for an alternative option-the leverage. Although children rarely used their leverage strategically, children with access to the alternative were less likely to play the social dilemma, especially when their leverage was larger. Furthermore, children waited longer to act as the leverage decreased. Finally, children almost never failed to coordinate. The results hint to a trade-off between maximizing benefits while maintaining long-term collaboration in complex scenarios where strategies such as turn taking are hard to implement.
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http://dx.doi.org/10.1016/j.jecp.2020.104963 | DOI Listing |
This paper draws on notions of embodied learning to inform exhibit design that fosters children's meaningful embodied engagement to successfully unveil science ideas. While children's interaction in the museum is often hands-on and speaks to the physical emphasis that embodiment brings, observation of children's spontaneous engagement at a museum's Water Zone revealed opportunities and barriers to engagement with, and access to, science ideas in terms of what we call 'embodied proximity' and 'embodied dislocation'. Drawing on design considerations from these findings a set of purpose-built prototype exhibits were developed and deployed to examine how they supported children's embodied exploration of science.
View Article and Find Full Text PDFJ Shoulder Elbow Surg
November 2024
Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, SC, USA. Electronic address:
Background/hypothesis: Reverse total shoulder arthroplasty (rTSA) has become the operative treatment of choice for acute proximal humerus fractures in the elderly population, but little data exist on the long-term outcomes or how they compare to rTSA done for degenerative conditions. The purpose of this study is to compare the clinical and radiographic outcomes of patients undergoing rTSA for acute fracture versus degenerative conditions with a minimum 5-year follow-up.
Methods: Data was extracted from an international registry of patients with the Exactech Equinoxe rTSA implant from 2007 to 2018.
JBJS Essent Surg Tech
September 2024
Department of Orthopaedic Surgery, The Johns Hopkins Hospital, Baltimore, Maryland.
Int Orthop
November 2024
Universitary Insitute of Locomotion and Sport, Pasteur II Hospital, Nice, France.
Purpose: The aim of this study was to observe the effects of changing humeral tray thickness on the resultant of intraoperative glenohumeral joint loads using a load-sensing system (LSS).
Methods: An rTSA was performed on fresh frozen full-body cadaver shoulders by using an internal proprietary LSS on the humeral side. The glenohumeral loads (Newtons) and the direction of the resultant force applied on the implant were recorded during four standard positions (External rotation, Extension, Abduction, Flexion) and three "complex" positions of Activity Daily Life ("behind back", "overhead reach" and "across chest").
Med Int (Lond)
June 2024
Department of Orthopedics, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand.
Total knee arthroplasty faces challenges in the management of medial uncontained tibial defects, affecting prosthesis stability and implant survival. The use of screws and bone cement is a preferred approach; however, optimal screw insertion techniques lack consensus in the existing literature. The present study aimed to address this gap by exploring optimal screw and cement placement strategies, focusing on their biomechanical implications.
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