Characterizing Stability Properties in Games with Strategic Substitutes

In games with strategic substitutes (GSS), convergence of the best response dynamic starting from the inf (or sup) of the strategy space is equivalent to global stability (convergence of every adaptive dynamic to the same pure strategy Nash equilibrium). Consequently, in GSS, global stability can be analyzed using a single best response dynamic. Moreover, in GSS, global stability is equivalent to dominance solvability, showing that in this class of games, two different foundations for robustness of predicted outcomes are equivalent, and both can be checked using a single best response dynamic. These equivalences are useful to study stability of equilibria in a variety of applications. Furthermore, in parameterized GSS, under natural conditions, dynamically stable equilibrium selections can be viewed in terms of monotone selections of equilibria. Several examples are provided.Global stability, adaptive dynamics, strategic substitutes, dominance solvable, learning, monotone comparative statics, Correspondence principle

Planning and Implementation of Guided Self-study in an Undergraduate Physiotherapy Curriculum in Switzerland: A Feasibility Study

Background: Self-directed learning (andragogy) or self-determined learning (heutagogy) can be implemented in guided self-study (GSS) with the aim to foster changes in the knowledge and skills of physiotherapy students in a higher education setting. To date, there is a lack of evidence for the use of GSS in higher education for physiotherapy. Aim: This study aimed to evaluate the feasibility of developing and implementing GSS in an undergraduate physiotherapy educational program in Switzerland. In addition, the effectiveness of GSS in bringing changes in knowledge and skills was assessed. Method: Full-time undergraduate physiotherapy students (n = 49) from the third semester volunteered in this feasibility study. Students were randomly allocated into a GSS group or a control group (CG) in the period from October to November 2019. The GSS group prepared a total of 3 clinical cases. Each case was processed in an 8-day cycle. On day 1, the clinical case (ie, description of a patient and symptoms) and learning goals were provided to the students electronically. The students prepared the cases in groups from days 2 to 7. They were guided 2 times by the tutor (physical meeting and via Skype) during this preparation phase. The results of group work were presented and reflected on during a moderated plenum session (90 minutes) on day 8. The feasibility of this higher education study was operationalized as follows: exposure (“dose,” ie, the number of GSS sessions performed over 90 minutes, as well as the content of the cases and the learning objectives); students’ responsiveness, with an a priori set 100% willingness to participate on day 8; program differentiation, to illustrate differences between the content of GSS cases and the curriculum; and degree of acceptability. In addition, an assessment was made of the total scores in the objective structured clinical examination (OSCE) and written examinations, as well as the amount of GSS. Statistical analyses were conducted using an intention-to-treat approach. Results: All 3 GSS sessions on day 8 lasted the scheduled 90 minutes. The content of the presented cases was aligned with the learning objectives. The responsiveness of students willing to participate on day 8 was 42%. In program differentiation, no differences in content were found between the GSS presentation content and the usual curriculum content when compared with the learning aims. Objective structured clinical examination grades and written examination grades were similar for the GSS and CG. The analysis of the focus group interview showed a low degree of acceptability indicating that the students’ workload was high during the GSS period. Conclusions: This study showed that this GSS program for undergraduate physiotherapy students in its current form is “feasible with modification.” Modification of the study protocol (eg, better time planning in the academic calendar) is needed to improve the students’ responsiveness. Alternatively, classroom hours may be reduced to favor self-study time. Such adjustments to the timetable should allow the physiotherapy students to better prepare the clinical cases. The effectiveness of the GSS and normal curriculum on OSCE and written examination scores was similar, probably due to the observed low students’ acceptability Keywords education graduate, learning curve, physical therapist

Students today, teachers tomorrow ? identifying constraints on the provision of Education

With an estimated 115 million children not attending primary school in the developing world, increasing access to education is critical. Resource constraints limit the effectiveness of demand-based subsidies. This paper focuses on the importance of a supply-side factor -- the availability of low-cost teachers -- and the resulting ability of the market to offer affordable education. The authors first show that private schools are three times more likely to emerge in villages with government girls'secondary schools (GSS). Identification is obtained by using official school construction guidelines as an instrument for the presence of GSS. In contrast, there is little or no relationship between the presence of a private school and girls'primary or boys'primary and secondary government schools. In support of a supply-channel, the authors then show that, for villages that received a GSS, there are over twice as many educated women and that private school teachers'wages are 27 percent lower in these villages. In an environment with poor female education and low mobility, GSS substantially increase the local supply of skilled women lowering wages locally and allowing the market to offer affordable education. These findings highlight the prominent role of women as teachers in facilitating educational access and resonate with similar historical evidence from developed economies. The students of today are the teachers of tomorrow.Education For All,Primary Education,Tertiary Education,Secondary Education,Teaching and Learning

Evolution of a Mission-Driven Youth Development Agency: Making a Difference

This report describes the evolution of a mission-driven youth development agency, Good Shepherd Services of New York City. In the more than six decades that good Shepherd Services (GSS) has served New York's neediest children and youth, it has evolved from a small provider of residential care for adolescent girls to a large, comprehensive, multi-faceted youth development, education, and family services agency. Incorporated in 1947, GSS's work on behalf of New York's most vulnerable is underscored by its original mission and core values, which are driven by the belief that despite the challenges people face, if gevn the right set of supports and opportunities, they have the ability to change and grow over time. This unique strategy and commitment to building on people's strengths rather than focusing on their deficits has shaped GSS' growth and service model of strength-based youth development

Toward Optimal Feature Selection in Naive Bayes for Text Categorization

Automated feature selection is important for text categorization to reduce the feature size and to speed up the learning process of classifiers. In this paper, we present a novel and efficient feature selection framework based on the Information Theory, which aims to rank the features with their discriminative capacity for classification. We first revisit two information measures: Kullback-Leibler divergence and Jeffreys divergence for binary hypothesis testing, and analyze their asymptotic properties relating to type I and type II errors of a Bayesian classifier. We then introduce a new divergence measure, called Jeffreys-Multi-Hypothesis (JMH) divergence, to measure multi-distribution divergence for multi-class classification. Based on the JMH-divergence, we develop two efficient feature selection methods, termed maximum discrimination ($MD$) and $MD-\chi^2$ methods, for text categorization. The promising results of extensive experiments demonstrate the effectiveness of the proposed approaches.Comment: This paper has been submitted to the IEEE Trans. Knowledge and Data Engineering. 14 pages, 5 figure

A Linguistic Analysis of Group Support Systems Interactions for Uncovering Social Realities of Organizations

Language represents the medium through which we encounter reality and can be viewed as a human social action (Holtgraves 2002). In this study, we apply speech act theory to analyze the data collected in a study by Trauth and Jessup (2000) and demonstrate that GSS can be an effective tool for diagnosing the social life of an organization. Our linguistic analysis confirms previous research findings that both the topic and the group size influence the pattern of discussion, especially when issues are threatening. In addition, when GSS is applied to such an issue, linguistic analysis helps to uncover hidden defensive speech routines. Identifying the speech acts of GSS discussions may therefore complement positivist and interpretive analysis by examining if participants’ engagement is superficial or profound, if consensus is reached or blocked, and if certain speech acts lead to dysfunctional organizational learning. Taken together with Trauth and Jessup (2000)’s study, we show that social realities revealed in GSS discussions are multi-dimensional and that, by adopting a different research stance to better understand the role of GSS, a variety of research benefits may be derived