Abstract Social networks, as well as many other real-world networks, exhibit overlapping community structure. Affiliation networks, as a large portion of social networks, consist of cooperative individuals: Two individuals are connected by a link if they belong to the same organization(s), such as companies, research groups and hobby clubs. Affiliation networks naturally contain many fully conn...

While previous aging studies have focused on particular components of social perception (e.g., theory of mind, self-referencing), little is known about age-related differences specifically for the neural basis of perception of affiliation and isolation. This study investigates age-related similarities and differences in the neural basis of affiliation and isolation. Participants viewed images o...

Consolation, i.e., post-conflict affiliation directed from bystanders to recent victims of aggression, has recently acquired an important role in the debate about empathy in great apes. Although similar contacts have been also described for aggressors, i.e., appeasement, they have received far less attention and their function and underlying mechanisms remain largely unknown. An exceptionally l...

Nowadays, business groups play an outstanding role in financial markets. Corporates in the trading groups are able to use technology, capital, human resources, productions and services of other members in the group in addition to their own resources and capabilities. Thus, this paper studies the effect of business group affiliation on cash holdings and return on equity. The sample involves 94 c...

The presentation concerns the “Minerva” project co-financed by E.U. aiming at identifying and promoting “good practice” in the design and delivery of e-learning courses (i.e., activities that teachers/tutors may use to foster social dynamics allowing participants to advance in knowledge construction). Accordingly to the principles of action-research, the project has been implemented in four sub...

The author regrets to announce that affiliation 8, in the above article (Gardner-Sood et al. 2015), contained an error in the author affiliation address and author surname, which were published in the approved article. The correct surname and affiliation address are given below. J. Eberhard, Clinical Psychiatric Research Center, Lund University, Skåne, Sweden

Yuji Sugita (Team Leader (Concurrent))*, ** Osamu Miyashita (Senior Research Scientist) Jaewoon Jung (Research Scientist) Chigusa Kobayashi (Research Scientist) Yasuhiro Matsunaga (Research Scientist) Hiromi Kano (Assistant) Takaharu Mori (Research Scientist (Concurrent))** Isseki Yu (Research Scientist (Concurrent))** Raimondas Galvelis (Postdoctoral Researcher (Concurrent))** Takao Yoda (Visi...

A committee of physicians sets prices for physician services in Medicare. We investigate whether the composition of this committee leads to prices biased in favor of its members. We find evidence of regulatory capture: increasing a measure of affiliation between the committee and proposers by one standard deviation increases prices by 10%. We then evaluate the effect of affiliation on the quali...

This paper discusses the conceptualization, measurement, and interpretation of centrality in affiliation networks. Although centrality is a well-studied topic in social network analysis, and is one of the most widely used properties for studying affiliation networks, virtually all discussions of centrality and centralization have concerned themselves with one-mode networks. Bonacich's work on s...

The principle of complementarity in interpersonal theory states that an actor's behavior tends to "pull, elicit, invite, or evoke" responses from interaction partners who are similar in affiliation (i.e., warmth vs. hostility) and opposite in control (i.e., dominance vs. submissiveness). Furthermore, complementary interactions are proposed to evoke less negative affect and promote greater relat...