Formation of homophily in academic performance: Students change their friends rather than performance
Homophily, the tendency of individuals to associate with others who share similar traits, has been identified as a major driving force in the formation and evolution of social ties. In many cases, it is not clear if homophily is the result of a socialization process, where individuals change their traits according to the dominance of that trait in their local social networks, or if it results from a selection process, in which individuals reshape their social networks so that their traits match those in the new environment. Here we demonstrate the detailed temporal formation of strong homophily in academic achievements of high school and university students. We analyze a unique dataset that contains information about the detailed time evolution of a friendship network of 6,000 students across 42 months. Combining the evolving social network data with the time series of the academic performance (GPA) of individual students, we show that academic homophily is a result of selection: students prefer to gradually reorganize their social networks according to their performance levels, rather than adapting their performance to the level of their local group. We find no signs for a pull effect, where a social environment of good performers motivates bad students to improve their performance. We are able to understand the underlying dynamics of grades and networks with a simple model. The lack of a social pull effect in classical educational settings could have important implications for the understanding of the observed persistence of segregation, inequality and social immobility in societies.
By analyzing the logs of corporate e-mail networks we found a number of patterns, showing how the size of ego-networks of individual employees changes on a day by day basis. We proposed a simple model that adequately describes the observed time dependence of an employee's "social circle". Comparison of experimental data with the theoretical model showed that employees are divided into two groups - with fast and slow changes in their social circles, respectively. We believe that the presence of these groups reflects both project-type and process-type of employees' activities. Comparison of data obtained before and during the global economic crisis has shown that the crisis led to an actual reduction in project-type activities.
The existing findings on the relationship between optimism and academic performance are rather contradictory. Two studies were undertaken to investigate thе relationship between attributional style, well-being, and academic performance. A new Russian-language measure of attributional style for positive and negative events (Gordeeva, Osin, Shevyakhova, 2009) with stability, globality, and controllability subscales was used. In the first study, optimistic attributional style for good events was associated with higher academic achievement in high school students (N=225) and mediated the effect of academic performance on self-esteem. In the second study, pessimistic attributional style for negative events predicted success in passing three difficult written entrance examinations in university entrants (N=108), and optimistic attributional style for good events predicted success with success expectations as a mediator. The results indicate that attributional styles for positive and negative events are not uniform in their relationship to performance in different academic settings and to well-being variables.
Seventeen papers, originally presented at a conference held in honor of Erik Thorbecke at Cornell University in October 2003, highlight the depth and breadth of Thorbecke's influence in research and policy on poverty, inequality, and development. Papers discuss the growth and roots of Erik Thorbecke's career; the consistency of poverty lines; poverty indices; whether poverty and inequality measures should be combined; an approach to measuring health inequality in India; household investments in education and income inequality at the community level in Indonesia; poverty traps and safety nets; progress in the modeling of rural households' behavior under market failures; labor laws and labor welfare in the context of the Indian experience; macro models and multipliers; multiplier effects and the reduction of poverty; developing an accounting matrix for the euro area; globalization, economic reform, and structural price transmission--social accounting matrix decomposition techniques with an empirical application to Vietnam; institutions, factor endowment, and inequality in Ghana, Kenya, and Senegal; an optimal nonlinear taxation approach combining incentives, inequality, and the allocation of aid when conditionality doesn't work; agricultural research and policy to achieve nutrition goals; and whether dualism is worth revisiting. No index.
Management in Russia is as difficult to define as a profession as it is in other countries, and the question of what education is appropriate for a future manager is also difficult to define. Business schools in russia need to think more carefully about their curriculums and about what they should be preparing their students for.
Meta-analytic research in psychology of academic performance proved that Big Five Conscientiousness and Openness to Experience predict scholastic achievements of university students (O’Connor, Paunonen, 2007; Poropat, 2009). But we claim that psychological predictiors of academic success depend on educational environment and can be culture-related. We examined 176 2nd and 3rd year economy and computer science university students in Russia with the Big Five – Ipsative version test (Shmelyov, 2010) and discovered that GPA and USE (United State Examination in Russia) scores are significantly correlated with Agreeableness (r = 0.15; p < 0.01 for GPA and r = 0.22 p < 0.01 for USE math) and Neuroticism (r = 0.2, p < 0.01 for GPA and r = -0,17; p < 0,01 for USE math). We suppose that the difference between our result and results provided by the meta-analyses mentioned above can be explained by the differences in educational environment in Russia and other countries. We assume that big number of classes and relatively small amount of individual and analytical assignments create the environment where Agreeableness and Neuroticism are important for the academic success.
How are professors paid? Can the "best and brightest" be attracted to the academic profession? With universities facing international competition, which countries compensate their academics best, and which ones lag behind? Paying the Professoriate examines these questions and provides key insights and recommendations into the current state of the academic profession worldwide. Paying the Professoriate is the first comparative analysis of global faculty salaries, remuneration, and terms of employment. Offering an in-depth international comparison of academic salaries in twenty-eight countries across public, private, research, and non-research universities, chapter authors shed light on the conditions and expectations that shape the modern academic profession. The top researchers on the academic profession worldwide analyze common themes, trends, and the impact of these matters on academic quality and research productivity. In a world where higher education capacity is a key driver of national innovation and prosperity, and nations seek to fast-track their economic growth through expansion of higher education systems, policy makers and administrators increasingly seek answers about what actions they should be taking. Paying the Professoriate provides a much needed resource, illuminating the key issues and offering recommendations.
There have been implemented engineering and development of multi-agent recommender system «EZSurf» that performs analysis of interests and provides recommendations for the social network «VKontakte» users based on the data from profile of particular user. During the work process different methods and technological solutions have been analyzed with examination of their advantages and disadvantages. Besides of that the comparative analysis of analogous products has been held where the most similar is Russian start-up service - Surfingbird. Based on this analysis the decision of recommender system implementation and integration has been accepted. The feature of this system is that it uses social network “VKontakte” profile for user’s data collection and API of third-party services (LastFM, TheMovieDB) for an extraction of information about similar objects. Such an approach contributes into optimization of recommender system, because it does not require creation of its own object classification system and objects database. The functionality of multi-agent system was separated between three agents. First agent (Collector) collects user data from “VKontakte” profile using VK API. Second agent (Analyzer) collects similar objects from databases of thitd-party services (LastFM, TheMovieDB) that will be the criteria for further search of recommendatory content. For search and selection of information an agent (Recommender) that works as web-crawler has been implemented. System «EZSurf» can be exploited by the users of social network “VKontakte” in everyday life for time economy on web-surfing process. At the same time they will get recommendations on content that are filtered depending on preferences of every particular user.
Twenty-four papers examine the state of early childhood development among sub-Saharan Africa's children. Papers discuss the state of young children in sub-Saharan Africa; positioning early childhood development (ECD) nationally--trends in selected African countries; early childhood care and education in sub-Saharan Africa--what it would take to meet the Millennium Development Goals; brain development and ECD--a case for investment; new threats to ECD--children affected by HIV/AIDS; ECD in Africa--a historical perspective; (mis)understanding ECD in Africa--the force of local and global motives; fathering--the role of men in raising children in Africa--holding up the other half of the sky; ECD policy--a comparative analysis in Ghana, Mauritius, and Namibia; participatory ECD policy planning in Francophone West Africa; responding to the challenge of meeting the needs of children under three in Africa; introducing preprimary classes in Africa--opportunities and challenges; inclusive education--a Mauritian response to the "inherent rights of the child"; parenting challenges for the changing African family; ECD and HIV/AIDS--the newest programming and policy challenge; supporting young children in conflict and postconflict situations--child protection and psychosocial well-being in Angola; strategic communication in early childhood development programs--the case of Uganda; the synergy of nutrition and ECD interventions in sub-Saharan Africa; the impact of ECD programs on maternal employment and older children's school attendance in Kenya; the Madrasa ECD program--making a difference; linking policy discourse to everyday life in Kenya--impacts of neoliberal policies on early education and childrearing; community-based approaches that work in Eastern and Southern Africa; whether early childhood programs can be financially sustainable in Africa; and a tri-part approach to promoting ECD capacity in Africa--ECD seminars, international conferences, and the Early Childhood Development Virtual University. Garcia is Lead Human Development Economist in the World Bank's Human Development Department, Africa Region. Pence is Director of the Early Childhood Development Virtual University and Professor in the School of Child and Youth Care, Faculty of Human and Social Development, at the University of Victoria. Evans is Director Emeritus for the Consultative Group on Early Childhood Care and Development. Index.
Тhе article is devoted to the analysis of science, education and business as key institutional agents of civil identity in contemporary society. The civil identity is specified as a subject-object interaction between an individual and a state. Also preconditions for diversification of state power in the field of civic identity forming are determined.
Institutions affect investment decisions, including investments in human capital. Hence institutions are relevant for the allocation of talent. Good market-supporting institutions attract talent to productive value-creating activities, whereas poor ones raise the appeal of rent-seeking. We propose a theoretical model that predicts that more talented individuals are particularly sensitive in their career choices to the quality of institutions, and test these predictions on a sample of around 95 countries of the world. We find a strong positive association between the quality of institutions and graduation of college and university students in science, and an even stronger negative correlation with graduation in law. Our findings are robust to various specifications of empirical models, including smaller samples of former colonies and transition countries. The quality of human capital makes the distinction between educational choices under strong and weak institutions particularly sharp. We show that the allocation of talent is an important link between institutions and growth.