Peer Effects on Individual Performance in a Team Sport
The paper investigates the variety of peer effects on individual performance in a team sport. The individual performance of more than 5,000 soccer players, from 234 teams, between 2010 and 2015, is measured with the help of the FIFA video game simulator developed by EA Sports. The study reveals positive peer effects on individual performance although the marginal benefit decreases. Additionally, team cohesion contributes to an improvement of players’ ranking.
We study how the achievements of university students are influenced by the characteristics and achievements of peers in individuals’ social networks. Defining peer group in terms of friendship and study partner ties enables us to apply a network regression model and thereby disentangle the influence of peers’ performance from that of peers’ background. We find significant positive peer effects via the academic achievements of friends and study partners. Students’ grades increase with the abilities of study partners, who may or may not also be friends; no such effect is observed for friends who are not also study partners. Additionally, the effects of the abilities of other classmates are found to be insignificant. The results support the claim that peer influence acts mainly through knowledge-sharing channels between students who are connected by social ties
We estimate the influence of classmates’ ability characteristics on student achievement in exogenously formed university student groups. The study uses administrative data on undergraduate students at a large selective university in Russia. The presence of high-ability classmates has a significant positive effect on individual grades in key economics and mathematics courses as well as on overall academic performance. While a simple linear-in-means model reveals moderate peer effects, non-linear specifications give strong evidence that students at the top of the ability distribution derive the greatest benefit from high-ability classmates. Less able students are not affected by peers and have no significant influence on peers’ outcomes.
We estimate the influence of classmates ability characteristics on student achievement in exogenously formed student groups. The study uses the administrative data on undergraduate students in large selective university in Russia. The presence of high-ability classmates has positive effect on individual academic performance, and most benefit is gained by students at the top of the ability distribution. The increase in share of less able students influences individual grades insignificantly.
The paper examines the structure, governance, and balance sheets of state-controlled banks in Russia, which accounted for over 55 percent of the total assets in the country's banking system in early 2012. The author offers a credible estimate of the size of the country's state banking sector by including banks that are indirectly owned by public organizations. Contrary to some predictions based on the theoretical literature on economic transition, he explains the relatively high profitability and efficiency of Russian state-controlled banks by pointing to their competitive position in such functions as acquisition and disposal of assets on behalf of the government. Also suggested in the paper is a different way of looking at market concentration in Russia (by consolidating the market shares of core state-controlled banks), which produces a picture of a more concentrated market than officially reported. Lastly, one of the author's interesting conclusions is that China provides a better benchmark than the formerly centrally planned economies of Central and Eastern Europe by which to assess the viability of state ownership of banks in Russia and to evaluate the country's banking sector.
The paper examines the principles for the supervision of financial conglomerates proposed by BCBS in the consultative document published in December 2011. Moreover, the article proposes a number of suggestions worked out by the authors within the HSE research team.