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Introduction Giles has proposed Speech Accommodation Theory (SAT) to account for language usage between individuals (see e.g. Giles et al., 1977). That theory is concerned with determining what motivates an individual to de-accentuate ethnolinguistic characteristics and converge toward the dominant culture, or to accentuate his/her ethnolinguistic characteristics and diverge from the dominant p...

With the Internet changing from era Web1.0 of computers’ interaction to era Web2.0 of users’ interaction, the development of transactional community has become the key solution to combine economic value with social value in social commerce. Transactional community is different from traditional social community in its relationship establishment because of the unique motivations of their members....

The general equilibrium analysis of perfectly competitive markets plays a central role in most attempts by positive economics to describe what happens in a market economy. It is usually admitted that there may be barriers to competition, that markets may be incomplete, and information may be lacking. Nevertheless, as a theoretical ideal which may approximate reality, general equilibrium analysi...

The Sznajd model for opinion dynamics has attracted a large interest as a simple realization of the psychological principle of social validation. As its most salient feature, it has been claimed that the Sznajd model is qualitatively different from other ordering processes because it is the only one featuring outflow of information as opposed to inflow. We show that this claim is unfounded by p...

We articulate the role of norms within the social identity perspective as a basis for theorizing a number of manifestly communicative phenomena. We describe how group norms are cognitively represented as context-dependent prototypes that capture the distinctive properties of groups. The same process that governs the psychological salience of different prototypes, and thus generates group normat...

This paper demonstrates the relevance of consumers’ susceptibility to interpersonal influence (CSII) in an investment context. In Study 1, a survey of individual investors, investment-related knowledge, psycho-social risks, and social needs emerge as antecedents that explain investors’ susceptibility to informational and normative influence. In turn, susceptibility to normative influences incre...

Scholars have long noted how migration streams, once initiated, obtain a self-feeding character. Studies have connected this phenomenon, called the cumulative causation of migration, to expanding social networks that link migrants in destination to individuals in origin. While extant research has established a positive association between individuals’ ties to prior migrants and their migration ...

With the advent of the participative Web, digital document readers gain in expressiveness. Annotations systems enables them to comment, to rephrase, to criticize, etc. passages from any document. IR approaches that considered document contents only nowadays tend to exploit this participative dimension of the Web. Readers’ activity (annotations and related debates) may notably improve IR recall ...

The decision of members in a knowledge-intensive team to withhold their knowledge may threaten the performance of the team. To address the problem of knowledge resource risk in project teams, we maintain that it is important to understand why team members choose to withhold their knowledge, conceptualized as knowledge-withholding intention. In line with the literature on effort withholding, the...