A conceptual framework of anonymity in Group Support Systems

As the development and use of automated systems for collaborative work grows, the need for a better understanding of these systems becomes more important. Our focus is on one type of system, a Group Support System (GSS) and, in particular, on one important aspect of a GSS—anonymity. A conceptual framework for the study of anonymity in a GSS is presented, which describes the general classes of variables and their relationships. These variables include the factors that influence anonymity in a GSS, types of anonymity, and the effects of anonymity on a message sender, receiver, group process, and outcome. Each of these variables is discussed with working propositions presented for important group process and outcome measures. The objectives of this article are to highlight the importance and complexity of anonymity, to act as a guide for empirical investigations of anonymity, and to influence future GSS development and use.     

Trader Anonymity, Price Formation and Liquidity

Using data from the Frankfurt Stock Exchange we analyze priceformation and liquidity in a non-anonymous environment withsimilarities to the floor of the NYSE. Our main hypothesis isthat the non-anonymity allows the specialist to assess the probabilitythat a trader trades on the basis of private information. Heuses this knowledge to price discriminate. This can be achievedby quoting a large spread and granting price improvement totraders deemed uninformed. Consistent with our hypothesis wefind that price improvement reflects lower adverse selectioncosts but does not lead to a reduction in the specialist's profit.Further, the quote adjustment following transactions at thequoted bid or ask price is more pronounced than the quote adjustmentafter transactions at prices inside the spread. Our resultsindicate that anonymity comes at the cost of higher adverseselection risk. JEL Classification: G10.     

Trader Anonymity, Price Formation and Liquidity

Using data from the Frankfurt Stock Exchange we analyze price formationand liquidity in a non-anonymous environment with similarities to thefloor of the NYSE. Our main hypothesis is that the non-anonymity allows the specialist to assess the probability that atrader trades on the basis of private information. He uses this knowledgeto price discriminate. This can be achieved by quoting a large spread and granting price improvement to traders deemed uninformed.Consistent with our hypothesis we find that price improvement reflects loweradverse selection costs but does not lead to a reduction in the specialist's profit. Further, the quote adjustmentfollowing transactions at the quoted bid or ask price is more pronounced than the quote adjustment aftertransactions at prices inside the spread. Our results indicate that anonymity comes at the cost ofhigher adverse selection risk.     

On equitable social welfare functions satisfying the Weak Pareto Axiom: A complete characterization

The present paper examines the problem of aggregating infinite utility streams with a social welfare function that respects the Anonymity and Weak Pareto Axioms. The paper provides a complete characterization of domains (of the one period utilities) on which such an aggregation is possible. A social welfare function satisfying the Anonymity and Weak Pareto Axioms exists on precisely those domains that do not contain any set of the order type of the set of positive and negative integers. The criterion is applied to decide on possibility and impossibility results for a variety of domains. It is also used to provide an alternative formulation of the characterization result in terms of the accumulation points of the domain.     

Anonymity,Stealth Trading,and the Information Content of Broker Identity

This paper examines whether the identity of a broker involved in transactions contains information. Using a sample of transactions from the Australian Stock Exchange—where broker identity is transparent—we provide evidence that consecutive buyer‐/seller‐initiated transactions by the same broker have a relatively high permanent price impact. This implies that broker identity conveys information to market participants, and that markets in which broker identity is disclosed are likely to be more efficient. We also find that medium‐sized trades by the same broker convey greater information than large and small trades, which is consistent with stealth trading by informed investors.     

网络交易风险语境下消费者的道德决策研究——以道德强度、道德哲学与匿名性的影响为据

研究以网络交易风险与消费者道德决策理论为铺垫,从道德议题本身（道德强度）、个人特性（道德哲学）与网络交易环境（匿名性）三个面向探讨其影响因素。通过设定网络交易的道德情境剧本与相关假设,收集450份有效样本进行实证检测分析发现：道德强度可简化为“潜在损害”与“社会压力”;道德哲学对于道德知觉、道德判断及道德意图皆产生显著影响;网络匿名性越高,则消费者的道德意图愈低。解构消费者道德决策样态及其管理意涵,以期为网络交易的和谐发展提供科学的决策路径指引。     

Price Clustering on the Tokyo Stock Exchange

This paper examines price clustering on the Tokyo Stock Exchange (TSE). Regardless of tick and lot size, prices ending in zero and five are the most popular. The TSE has no market makers or direct negotiation between traders; therefore, clustering is not explained by collusion or negotiation. Our evidence supports the attraction hypothesis. Clustering also extends to order book depth. There is evidence of strategic trading behavior as traders place orders one price tick better than zero and five to avoid queuing orders at prices ending in these digits. Strategic trading behavior declined and clustering increased when the market became anonymous.     

Appreciating Anonymity: An Exploration of Embarrassing Products and the Power of Blending In

While most research suggests using ostentatious packaging as a strategy to increase sales, using such packaging for embarrassing products can actually decrease purchase intentions. Five studies explore two components of packaging that influence product anonymity and the relationship between anonymity, embarrassment, and purchase intentions. The studies use a variety of methods including one field study, three scenario-based experiments, and one virtual reality video study with a behavioral component. This research contributes to retailing literature by examining the effect of packaging dimensions on product anonymity and the subsequent impact on embarrassment and purchase intentions. We consistently show more anonymously packaged products are perceived as less embarrassing and are more likely to be purchased than less anonymously packaged products. Consumers are able to circumvent undesirable stigmas associated with embarrassing products by selecting products that are more anonymously packaged and positioned in the store. Additionally, increased sales due to product packaging differences are more likely when an embarrassing product is positioned in an aisle versus on an endcap. Promotional incentives, such as coupons, in-store discounts, or bonus buys, can mitigate the negative effect of embarrassment onto purchase intentions. These findings have important implications to our understanding of shopper behavior when threatened with embarrassment.     

The impact of basic human needs on the use of retailing self-service technologies: A study of self-determination theory

Self-service technologies (SSTs) are becoming increasingly popular in retailing contexts. Previous theories of SST adoption have largely ignored the basic human needs, such as competence, autonomy and relatedness, that drive customer motivation and the use of SSTs. We address this theoretical gap and examine self-determination theory (SDT) in the context of the supermarket self-checkout. Based on the argument proposed by SDT, self-determined motivation is hypothesized to mediate the relationships between autonomy, competence, and perceived anonymity, and the intention to use SSTs. Data collected from 361 respondents form a structural equation model and support these hypotheses. The current study is important as it helps understand the role of customers' participation in the self-service. Managerial and theoretical implications are suggested.     

Electronic support for large groups

One of the key challenges in applying information technology to improve group performance lies in matching the capabilities of technology to the needs of the situation. Groups can choose meeting styles that use solely electronic communication, solely verbal communication, or a combination of both verbal and electronic communication. This paper reports on a series of ten case studies of large groups performing information generation tasks. For these groups and tasks, meeting styles with a greater proportion of electronic communication were found to result in higher perceived effectiveness, efficiency, and participant satisfaction. Qualitative evidence suggested that in this situation, the parallelism, direct access to the meeting memory, and anonymity offered by pure electronic communication outweighed its reduced media richness.