The increasing number of companies providing internet services and auction tools helped popularize the online reverse auction trend for purchasing commodities and services in the last decade. As a result, a number of owners, both public and private, accepted the online reverse auctions as the bidding technique for their construction projects. Owners, while trying to minimize their costs for construction projects, are also required to address their ethical responsibilities to the shareholders. In the (...) case of online reverse auctions for construction projects, the ethical issues involved in the bidding technique directly reflects on the owner’s ethical and social responsibilities to their shareholders. The goal of this paper is to identify the shareholder ethics and responsibilities in online reverse auctions for construction projects by analyzing the ethical issues for the parties involved in the process. The identification of the ethical issues and responsibilities requires clear definition and understanding of professional ethics and the roles of the involved parties. In this paper, first, the concept of professional ethics and social responsibility is described in a general form. To illustrate the ethical issues and responsibilities, a sample case of bidding for a construction project using online reverse auction techniques is presented in which the shareholders were actively involved in questioning the ethical issues. The issues involved in the bidding process and their reflection on the shareholder responsibilities are described and analyzed for each stage of the process. A brief discussion of the overall process is also included to address the general ethical issues involved in online reverse auctions. (shrink)

B2B online reverse auctions technology (ORAs) emerged as a popular tool for large buying firms in the late 1990s. However, its growing use has been accompanied by a corresponding increase in unethical behaviors to a point that it has been described as the technology that has triggered more ethical concerns in the e-commerce arena than in any other segment of activity. Our findings first indicate that the establishment of formal ethical criteria based on the restrictive interpretation of ethics (...) as honesty is not enough to resolve the ethical issues that surround the introduction of a technology because it ignores the ethical values shared by most acton in the sector in terms of fairness. We show the extent to which lobbying, rumor, technical problems, and public discourse can impact on the interpretations of the technology regarding ethics. Highlighting the importance of incorporating ORAs into the broader context of relationship management that integrates ethics as fairness and not only ethics as honesty serves to illustrate why the future of ORAs might not be as bright as predicted by a theoretical interpretation of the technology that is sometimes disconnected from the realities of the field. (shrink)

Internet fraud is an issue that increasingly concerns regulators, consumers, firms, and business ethics researchers. In this article, we examine one common form of internet fraud, the practice of shill bidding (when a seller in an auction enters a bid on his or her own item). The significant incidence of shill bidding on eBay (in spite of the fact that it is illegal just as it is in live auctions) exemplifies the current ineffectiveness of regulatory means as (...) well as the lack of effective societal mechanisms to prevent online fraud. Further, the proliferation of shill bidding along with other types of internet fraud may have broader implications. If unethical behavior such as shill bidding becomes too widespread on the internet, regulators and other societal forces may deem it necessary to institute controls that will impact the entire online marketplace as well as the future development and regulation of business activities on the internet. Our results indicate that shill bidding is perpetrated on eBay significantly more often than 0.1% rate of fraud estimated by the firm. This suggests that regulators, users, and others stakeholders may become concerned enough to act. The impact of those responses on the internet of the future may affect a broad array of users beyond the unethical sellers on eBay. (shrink)

Spirited disagreement exists among online auction participants over the ethics of sniping: delaying one's bid until the closing seconds of an online auction. Through analysis of the structural features of online auctions and by deploying Rawls's (1955) distinction between justifying an action under a practice and justifying the practice itself, I argue that: (i) the disagreement is better conceived as one over the ethics of online auction hosting (and therefore, over business ethics) than (...) over the ethics of online auction participation; (ii) so conceived, the argument against sniping is nonetheless implausible; and (iii) the disagreement remains interesting not on the merits, but for the curious fact that it is bidders who complain about sniping. (shrink)

PurposeThe purpose of this paper is to present implications of the seller's ability to bid in the four classical auction forms, with independent private values: English, Dutch, first‐ and second‐price auctions.Design/methodology/approachUnder each auction form, the identity of the winning bidder and the expected winning bid are compared between the case when the seller may bid and when he cannot, using equilibrium bidder strategies. The seller's incentive to bid is evaluated.FindingsThe strategies and the welfare results differ with auction (...) type and underlying information assumptions – bidders are either aware or unaware of the seller's ability to bid. In the Dutch and the first‐price auctions, seller‐bidding does not affect any classical results. In the English and the second‐price auctions, it leads to no lower expected prices than without it and higher prices with positive probability. In the English and the second‐price auctions, the seller bids above his reservation value and may unintentionally win the auction. These auctions result in inefficiency with positive probability.Practical implicationsThe English and the second‐price auctions are the most common real‐world auctions. In these auctions, the seller's ability to bid – secretly or publicly – redistributes welfare among participants and introduces a possibility of inefficiency. Making this ability publicly known does not solve the latter problem. Auctioneers must prevent the seller from bidding, or must select a different auction form when seller‐bidding is anticipated.Originality/valueThe paper clarifies to regulators, auction designers, bidders, and other readers which auction forms are susceptible to subversion by seller‐bidding and what the potential damages are. (shrink)

Lowest-unique sealed-bid auctions are auctions with endogenous participation, costly bids, and the lowest bid among all unique bids wins. Properties of symmetric NEs are studied. The symmetric NE with the lowest expected gains is the maximin outcome under symmetric strategies, and it is the solution to a mathematical program. Comparative statics for the number of bidders, the value of the item and the bidding cost are derived. The two bidders’ auction is equivalent to the Hawk–Dove game. Simulations of (...) replicator dynamics provide numerical evidence that the symmetric NE with the lowest expected gains is also asymptotically stable. (shrink)

Lowest-unique sealed-bid auctions are auctions with endogenous participation, costly bids, and the lowest bid among all unique bids wins. Properties of symmetric NEs are studied. The symmetric NE with the lowest expected gains is the maximin outcome under symmetric strategies, and it is the solution to a mathematical program. Comparative statics for the number of bidders, the value of the item and the bidding cost are derived. The two bidders’ auction is equivalent to the Hawk–Dove game. Simulations of (...) replicator dynamics provide numerical evidence that the symmetric NE with the lowest expected gains is also asymptotically stable. (shrink)

The paper reports experimental data on the behavior in the first-price sealed-bid auction for a varying number of bidders when values and bids are private information. This feedback-free design is proposed for the experimental test of the one-shot game situation. We consider both within-subjects and between-subjects variations. In line with the qualitative risk neutral Nash equilibrium prediction, the data show that bids increase in the number of bidders. However, in auctions involving a small number of bidders, average bids are (...) above, and in auctions involving a larger number of bidders, average bids are below the risk neutral equilibrium prediction. The quartile analysis reveals that bidding behavior is not constant across the full value range for a given number of bidders. On the high value quartiles, however, the average bid–value ratio is not different from the risk neutral prediction. The behavior is different when the winning bid is revealed after each repetition. (shrink)

In this paper we examine optimal bidding without the independence axiom in a unified framework which allows for a clear graphical representation. Thus, we can show very simply the independence axiom to be a necessary and sufficient condition on preferences for strategical equivalence of the two first-price and second-price auctions, respectively, and for the second-price sealed-bid auction to be demand revealing. The analysis reveals that the betweenness property is necessary and sufficient for the ascending-bid auction to be (...) demand revealing while optimal bids exceed (are less than) bidders' valuations, iff preferences are quasiconcave (quasiconvex). Furthermore, it can be shown that fanning out (fanning in) leads to a higher (lower) selling-price in open than in sealed-bid auctions. (shrink)

We live in a culture where gender identity and gender roles can be ruled by the social and cultural beliefs that legitimise gender relations. Thus, there is a need to learn and relearn the potentia...

We show that linear logic can serve as an expressive framework in which to model a rich variety of combinatorial auction mechanisms. Due to its resource-sensitive nature, linear logic can easily represent bids in combinatorial auctions in which goods may be sold in multiple units, and we show how it naturally generalises several bidding languages familiar from the literature. Moreover, the winner determination problem, i.e., the problem of computing an allocation of goods to bidders producing a certain amount (...) of revenue for the auctioneer, can be modelled as the problem of finding a proof for a particular linear logic sequent. (shrink)

Reverse mathematics is a program in mathematical logic that seeks to give precise answers to the question of which axioms are necessary in order to prove theorems of "ordinary mathematics": roughly speaking, those concerning structures that are either themselves countable, or which can be represented by countable "codes". This includes many fundamental theorems of real, complex, and functional analysis, countable algebra, countable infinitary combinatorics, descriptive set theory, and mathematical logic. This entry aims to give the reader a broad introduction (...) to the history, methodology, and results of the reverse mathematics program, with a particular focus on its connections to foundational programs such as finitism, constructivism, and predicativism. (shrink)

The article presents an Internet experiment where subjects sequentially bid for basic gifts and binary-lotteries on these gifts in incentive compatible Vickrey auctions. Subjects exhibit uniformly pessimistic prize-weighting in spite of precautions to reduce suspicion and prohibit collusion. The bids for lotteries are close to the minimal payable value, even when the probability of obtaining a better prize is larger than 50%. Prize-weighting becomes even more conservative as the distance in value of payable prizes increases. The twofold aversive affect appears (...) for three distinct groups of students; we demonstrate, however, that the same subjects overweight small win-probabilities in standard binary-choice. (shrink)

We study a first-price auction preceded by a negotiation stage with complete information, during which bidders may form a bidding ring. We prove that in the absence of externalities, the grand cartel forms in equilibrium, allowing ring members to gain the auctioned object for a minimal price. However, identity-dependent externalities may lead to the formation of small rings, as often observed in practice. Potential ring members may condition their participation on high transfer payments as a compensation for their (...) expected externalities if the ring forms. The cartel may therefore profitably exclude these bidders, although risking tougher competition in the auction. We also analyze ring efficiency in the presence of externalities, showing that a ring may prefer sending an inefficient member to the auction, if the efficient member exerts threatening externalities on bidders outside the ring, which in turn leads to a higher winning price. (shrink)

In this paper we suggest a model of sequential auctions with endogenous participation where each bidder conjectures about the number of participants at each round. Then, after learning his value, each bidder decides whether or not to participate in the auction. In the calculation of his expected value, each bidder uses his conjectures about the number of participants for each possible subgroup. In equilibrium, the conjectured probability is compatible with the probability of staying in the auction. In our (...) model, players face participation costs, bidders may buy as many objects as they wish and they are allowed to drop out at any round. Bidders can drop out at any time, but they cannot come back to the auction. In particular we can determine the number of participants and expected prices in equilibrium. We show that for any bidding strategy, there exists such a probability of staying in the auction. For the case of stochastically independent objects, we show that in equilibrium every bidder who decides to continue submits a bid that is equal to his value at each round. When objects are stochastically identical, we are able to show that expected prices are decreasing. (shrink)

Each day, a countless number of items is sold through online auction sites such as eBay and Ricardo. Though abuse is being reported more and more, transactions seem to be relatively hassle free. A possible explanation for this phenomenon is that the sites’ reputation mechanisms prevent opportunistic behavior. To analyze this issue, we first summarize and extend the mechanisms that affect the probability of sale of an item and its price. We then try to replicate the results as (...) found in four recent papers on online auctions. Our analyses reveal that (1) it makes sense to differentiate between ‘power sellers’ and the less regular users, (2) there are variables that have an effect on sales that are often not controlled for, (3) one should carefully consider how reputation is operationalized, ( 4) neglecting heteroscedastidty in the data can have serious consequences, and (5) there is some support indicating that effects differ across auction sites. (shrink)

Class inclusion theory asserts that one cannot reverse the topic and vehicle of a metaphor and produce a new, meaningful metaphor that is based on the same interpretive ground. In 2 experiments we test that claim. In Study 1 we replicate the procedures employed by Glucksberg, McGlone, & Manfredi (1997) that provided support for the assertion. However we now add experimental conditions in which the target metaphors, either with the topic and vehicle in its canonical order or reversed, are (...) placed in discourse contexts that provide support for a meaningful interpretation based on the same ground. In contrast to the prediction of class inclusion theory, fully 72% of the cases the reversed metaphors were rated as interpretable and interpretation was based on the same ground used in interpreting the metaphors in their canonical order. In Study 2, the online processing of the metaphors in context are examined in a word-by-word reading task. We find that canonical and reversed order metaphors were read at the same rate throughout and both sets exhibited the same reading patterns: increased reading time of the noun-phrase (NP) that contains the metaphoric vehicle and of the first word in the text that follows the metaphor. We take these data to indicate that nonreversibility cannot be taken as a necessary condition of metaphor. (shrink)

continent. 1.1 (2011): 22-25. The Author gratefully acknowledges the financial support of CAPES (Coordenação de Aperfeiçoamento do Ensino Superior), Brazil. From the multifarious subdivisions of semiotics, be they naturalistic or culturalistic, the realm of semiotics of value is a ?eld that is getting more and more attention these days. Our entire political and economic systems are based upon structures of symbolic representation that many times seem not only to embody monetary value but also to determine it. The connection between monetary (...) and linguistic exchanges is self-evident: the former requires the latter and develops in direct relation to it. Creative experimentation and design of digital systems of value exchange are blossoming on the web. Dr. Gilson Schwartz, an economist turned media theorist and professor at the University of São Paulo, adopted the concept of Iconomics, originally created by Michael Kaplan, an author concerned with the linguistics of economic value. Empowering local communities and unlocking new levels of value creation and representation via digital technologies are the main goals of Dr. Schwartz’s projects, aiming at the re-designing of our relationship to the economic value of imagination and the social control of property. Schwartz is Assistant Professor at the School of Communication and Arts of the University of São Paulo, a former Chief Economist at BankBoston, Brazil and Advisor to the President of the National Social and Economic Development Bank (BNDES). FURTHER READING: Kaplan, Michael. “Iconomics: The Rhetoric of Speculation.” Public Culture . 15.3 (2003): 477-493. Renata Lemos-Morais: You have recently produced and directed a short documentary about Creative Currencies in Latin America. Could you tell us a bit about its process and its findings? Gilson Schwartz: The “Creative Currencies” project is a work-in-progress platform which unfolds as an action research agenda connected both to the production of audiovisual content and the development of social currency software. The initiative dates back to 2003 when I led an experimental project supported by the Presidency of Brazil. At that time, we issued paper currency in a small, touristic village in the Northeast Region which stimulated local cultural projects. But it was only in 2009 that the Central Bank of Brazil acknowledged “social currencies” as a legitimate economic agenda, calling for more debate at the I Financial Inclusion Forum. This year, the monetary authorities organized a second forum that also opened the room to discussions on mobile payment systems and new perspectives on poverty alleviation via State subsidies. The Ministry of Culture funded the “Creative Currencies” project in 2009-2010 and our next stage in this discovery process is to be supported by the National Social and Economic Development Bank (BNDES). In short, there is genuine interest among public officials in different areas and public funding for social currencies is on the rise in Brazil. However, after all these years we are still at a very early stage of research and practice. Some of the most successful initiatives (such as Banco Palmas) actually evolved out of local monetary creation to become correspondent banking operations for commercial banks and other financial groups. After eight years of price stability and social inclusion, Brazil stands out as a major opportunity for social experimentation, even the Grameen Bank is now entering the Brazilian market and many NGOs are geared towards different forms of entrepreneurialism in the base of the pyramid, riding solidarity economic models, microfinance and microcredit for local development. It is yet to be seen, however, whether these developments are just one more stage of “bankarization”, that is to say, an extension of regular banking services or actually a new form of social and symbolic self-determination at the local level. So far, the Central Bank of Brazil is open to new forms of credit and local finance as long as they are strictly territorial and very close to barter among the poor. In other words, whether the process of monetary creation could be made to fit an open source paradigm is yet to be seen. Community banking and social currencies might as well end up as just another channel for access to and use of banking services. The “Creative Currencies” project aims at promoting the discussion of more fundamental issues, such as the limits of central banking, the prospects for local financial development and the possibility of creating and managing financial icons as cultural assets. The purpose of this project is to produce short documentaries that will bear testimony to this evolving regulatory framework while inducing more discussion about the fundamental iconomic issues concealed in the process of money and wealth creation. RLM: What new potential is there in applying digital technologies to currency creation? GS: Globalization is a result of the virtualization of money, that is, the overcoming of illusions such as the “gold standard”. Money is an icon created by institutions, not on supposedly natural or material foundations but out of political and financial interests. The “dollar standard” is an outstanding evidence of this phenomenon and Kaplan´s paper, the first to use the expression “iconomics”, insists on the rhetoric and semiotic effects associated to a supposedly scientific model of money creation and management. This is a fundamental change that was perceived and discussed much before the digitalization of the world by unorthodox economists such as John Maynard Keynes since the early 20th century. The digitalization of global financial flows accelerated this immateriality and the creation of the Euro was yet another evidence of the political foundations of currencies. The banking establishment, however, is keen on the idea that scientific formulae hold the key to sound money creation. Keynesianism has been repeatedly associated to “inflationism” while the supposedly sound monetary policies of the Orthodoxy serve well the political and financial interests of a technocratic elite. Corporate media also serve this fictitious depiction of the monetary process despite the cyclical bust of monetary rules and financial regulations. The internet, however, has created numerous opportunities for the disintermediation in industries such as film, music and commodities. There is no reason to doubt that the financial industry can also be transformed by Peer-to-Peer (P2P) infrastructures. Money is media as well. Credit is but confidence. Once people realize that the distributed computing power of networks can also be the platform to weave new monetary and credit operations, there is room for grassroots emancipation out of the established owners of monetary institutions. So far, however, there has been a privatization of monetary management and there is not a clear path or model for the emergent (P2P) property democratization that is inherent to the internet. Digital assets, however, clearly have an inherent potential to escape central control and proprietary regulatory frameworks. RLM: How are social networks transforming the ways in which we exchange value? Do you believe that online influence and reputation might be translated into a new kind of currency? GS: The foundation for social currencies as envisaged by solidarity economics is the territory. Authorities are willing to concede local monetary creation as long as it is restricted to poor neighborhoods, as a proxy to barter. In this relevant but limited context, reputation, personal knowledge and informal ties form the matrix of local or “proximity” finance which are expected to keep credit and leverage to a sustainable level. Anything beyond that should and would lead to an integration of local finance into the established banking system. However, inasmuch as the internet promotes virtual territories and reputation is now subject to all sorts of digital manipulation and stardom becomes an everyday cultural process among teenagers and elders alike, the territorial “foundation” is substituted for more complex patterns of solidarity, cooperation and exchange that reach beyond the physical territory and even the “human.” Digital assets embody knowledge, technology, cultural and educational values that are exchanged at a global scale beyond the control of democratic States (Chinese-like intervention is the exception, not the rule). Hacktivism is unstoppable and so is monetary hacktivism. Especially in the Third World, mobile communications fast became conveyors of money transfers and other appropriation strategies. Banking and telecom sectors already battle for the control of these emerging markets and, as a matter of fact, have so far contributed to the containment of these processes. Governments serve these moguls and have usually adopted a wait-and-see attitude. If open source hardware and grassroots social movements combine to challenge these proprietary battles, then social networks may evolve into new forms of social capital and thus form the ground on which to design and implement social currencies. The global financial crisis, as well as the dollar demise, are an event of such a proportion that social networks may open the path for emancipator subjects to seize the opportunity. RLM: What are some of the social experiments that you think are revolutionizing the way in which value is exchanged? GS: There is a broad evolution of economic systems towards the valuation of intangible assets such as knowledge, reputation and sustainability. There are many examples of local as well as global events that call the traditional systems of exchange into question, from carbon credits to educational bonuses, digital barter frameworks and locally based solidarity and fair trade networks. These emerging examples, no matter how different in nature or scale, represent a challenge to the traditional value creation schemes and theories which are based on use and exchange value, supply and demand. This is not to say that utility and labour or scarcity are to be totally dismissed, but there is now an emerging perception that value is also a function of behavioral codes, symbolic patterns and the energy of institutional frameworks. The plasticity of digital platforms is relevant insofar as intellectual property becomes the central source of value creation. But when you discuss the property rights of public goods such as the environment or basic social rights (of minorities or localities), then a new paradigm seems to emerge. RLM: Are gaming and online storytelling digital practices that might have an impact on the way new currencies are created and developed? GS: “Play money” has been one of the early and most intriguing phenomena associated to the diffusion of virtual worlds. These virtual currencies have also been prone to “boom and bust” dynamics, speculation and pure theft (Second Life scams were common and led to “intervention” by the owners of the game). Storytelling is a major source of value, that is, the value of attention and the markets for audience. There are plenty of private monies created and managed by corporate entertainment groups, telecom operators (via mobile virtual network operators) and marketing frameworks. The casino economy, as already depicted by Keynes and other unorthodox economists, is always storytelling about future states of the world, confidence building and leverage of animal spirits. The novelty of current events is not the fictitious nature of any form of capital, but the potential for digital democratization of controls over the imaginary nature of value creation. But this is just a potential, a possibility, a figment that more often than not is appropriated by centralized and opaque private powers. The game industry is a testbed for new connections between storytelling and money creation. RLM: Monetary value was originally connected to the scarcity of precious metals, such as gold. Our entire monetary system seems therefore to function according to a logic of scarcity. Do you believe it is possible to reverse this logic into a logic of abundance? GS: The gold standard was a fiction itself, the “scarcity” is always produced by institutions that regulate confidence and access to credit. The key issue is not to fabricate abundance, but to question the institutions which produce scarcity out of any standard, gold or whatever. Central banks are at the service of private banks in the creation and management of scarcity. RLM: The promise that nanotechnology holds for our future is one of radical abundance (or so say transhumanists). The possibility of creating any kind of material substance through nanoengineering seems each day more feasible. What would this possibility entail in terms of systems of value exchange? GS: Nanotechnology, environmental concerns and grassroots appropriation of distributed knowledge are the frontiers of a new horizon of energy creation and management. Social groups in charge of managing scarcity for the sake of wealth and power concentration must be held accountable for the destruction of our future. Once this key political conundrum is accounted for, new systems of value exchange and even a non-mercantile society will come into existence. Revolutionary theorists such as Marx envisaged transformation via the extreme clash of contradictions between capital and labour. This approach has never led to a change in the systemic logic of scarcity for the sake of social control. We are once again facing the threshold of large scale societal change, but the outcome of the current crisis should come from our imagination, not from yet another paradox of abundance and scarcity. As long as we remain attached to the materiality of value, the illusion of freedom will but reinforce the massive manipulation of necessity. RLM: What do you think is the role of crowdfunding in this context? GS: Crowdsourcing as well as crowdfunding are examples of the peer to peer opportunities that come along with distributed computer power. However, the power structure behind wealth and scarcity creation may or may not be changed by crowd management. But it should not be taken at face value, so to speak. The stock market of course is an early form of crowdfunding without calling into question the proprietary framework of the companies offering their investment projects to the market. Any market is a form of crowdsourcing, that is to say, of distributed forms of supply and demand matchmaking. The wealth of networks, however, depends on the contractual ecosystem, the institutional framework, the channeling of social imagination, not on the purely quantitative distribution of bids and offers. I see economics as supply, demand and code. Once you have access to the code, once openness becomes part of the game, then there is a chance of crowd behavior becoming collective intelligence and sustainable imagination. RLM: Is the development of digital currencies headed towards a pluralistic ecology in which many micro currency systems co-exist, or is it penetrating the mainstream monetary system? If it is affecting the mainstream financial system, what would be its effect in the long-term? GS: The same issue is at stake both at local and global levels. The global system is, as a matter of fact, an unstable ecosystem of “micro currencies” whereas the dollar has so far exerted an overwhelming influence. Local currencies and private monies coexist with national currencies only to the extent that the Central Bank admits, for instance, that grassroots monetary emissions remain territorial and strictly connected to poverty. However, the question of how new developments in digital technologies and nanotechnologies might alter not only our current monetary systems but also our understanding of value in itself, is still an open question. (shrink)

The winner’s curse in auctions might emerge from asymmetric information and/or from some willingness to pay for winning. This article is based on a sealed-bid common value first price auction, with a net loss for the subject with the second highest bid. The results show the existence of a trade-off between the magnitude of the potential loss and the willingness to pay for the victory. In the context of public procurement these results suggest that companies are willing to overpay (...) small contracts to gain a sort of ‘free advertising’, whereas this is not the case when the contracts are large. (shrink)

Recommending the identity of bidders in public procurement auctions has a significant impact in many areas of public procurement, but it has not yet been studied in depth. A bidders recommender would be a very beneficial tool because a supplier can search appropriate tenders and, vice versa, a public procurement agency can discover automatically unknown companies which are suitable for its tender. This paper develops a pioneering algorithm to recommend potential bidders using a machine learning method, particularly a random forest (...) classifier. The bidders recommender is described theoretically, so it can be implemented or adapted to any particular situation. It has been successfully validated with a case study: an actual Spanish tender dataset which has 102,087 tenders from 2014 to 2020 and a company dataset which has 1,353,213 Spanish companies. Quantitative, graphical, and statistical descriptions of both datasets are presented. The results of the case study were satisfactory: the winning bidding company is within the recommended companies group, from 24% to 38% of the tenders, according to different test conditions and scenarios. (shrink)

The student-teacher relationship has been consistently associated to positive and generalized outcomes, though its quality seems to be questioned in online teaching, which in turn has had a negative impact on students and teachers’ wellbeing during school closures forced by the COVID-19 pandemic. The current work compared students and teachers’ perceptions of STR quality and quality of life after online and after classroom teaching, and if STR quality relates with perceived wellbeing across those teaching modalities. Participants were 47 (...) teachers and 56 students, who self-reported on the quality of STR and quality of life twice: after 3 months of online teaching and after 3 months of classroom teaching. Quality of life remained stable across teaching modalities. Teachers perceived no differences in teacher-student quality across both moments; students perceived higher conflict after classroom teaching. Closeness in STR associated with increased wellbeing and the reverse was true for conflict, though diverse domains of quality of life were implicated across timings and across teachers and students. These findings concur to online teaching being an impersonal experience for students, where conflict is lower due to the absence of social stimuli; alternatively, teachers may be urged to use the STR as a resource to sustain better positive outcomes even when teaching online, both for them and for their students. (shrink)

Dear Editor, -/- We are pleased to report that we have recently published an article in a well-established bioethics journal where we briefly review the evidence surrounding abortion pill reversal (APR) and argue that those who identify with the pro-choice standpoint should support APR provision (indeed, the ex-CEO of BPAS, Ann Furedi, has agreed in principle with this conclusion of ours in one of her tweets). We also hope that our article will serve as a record in the peer-reviewed and (...) indexed literature of the struggles our fellow CMA UK members have gone through to support women who eventually decided to keep their pregnancies, and the tribulations they had to endure from their colleagues in the medical establishment. It is perhaps somewhat symbolic that our paper has been published in a special issue dedicated to the ‘feminist ethics of care’ as APR and the sacrifice of our colleagues shows what care for women should really look like.(1) -/- We have made sure to spread the word about this as well. One of us has given an interview to Irish pro-life group Protect Life (still to be published) and we have submitted a post to a pro-life collaborative that also awaits publication. Finally, we have also published a post about this paper and current developments in the USA in a well-established bioethics news site, which has been republished in various online outlets.(2) -/- We believe that this promotion of APR is vital, as recent statements from both the UK and the USA indicate that the pressure against APR might grow. The American College of Obstetricians and Gynecologists have published a post entitled ‘Facts Are Important: Medication Abortion "Reversal" Is Not Supported by Science’.(3) Similarly, the UK Royal College of Obstetricians and Gynaecologists, together with other bodies (including the British Society of Abortion Care Providers) have posted a position statement stating that there is no reputable evidence for using progesterone in APR.(4) One truly wonders why these organisations are pushing this narrative despite the weight of the evidence available being in favour of APR and their organisations’ professed support for women’s choice. (shrink)

John Scot Eriugena's work Periphyseon is commonly regarded as having introduced Neoplatonism into early medieval thinking. Eriugena's theory of the reunification of the Creator and his creation is then viewed as being based on the Neoplatonic scheme of procession and reversion. However, this interpretation falls short of Eriugena's intentions. Above all, he denies any ontological difference between Creator and creation without taking recourse to the Neoplatonic considerations of procession and reversion. Surprisingly, according to Eriugena's explanation, God is not only the (...) Creator but he is also created. He is created insofar as he alone, possessing all being, is the essence of all created things. Moreover, the fourfold division of nature, presented at the beginning of the work, is not Eriugena's own innovation, but a common Carolingian concept. It is rather his aim to show that from an ontological point of view this division has to be resolved. (shrink)

Time preference reversals refers to systematic inconsistencies between preferences and valuations in intertemporal choice. When faced with a pair of intertemporal options, people preferred the smaller-sooner option but assign a higher price to the larger-later one. Different hypotheses postulate that the differences in evaluation scale or output format between the choice and the bid tasks cause the preference reversal. However, these hypotheses have not been distinguished. In the present study, we conducted a hybrid task, which shares the same evaluation scale (...) with the bid task and shares the same output format with the choice task. By comparing these three tasks, we can figure out the key reason for time preference reversal. The eye-tracking measures reflecting attention allocation, cognitive effort and information search pattern were examined. Results showed that participants' time preference and eye-tracking measures in the hybrid task were similar to those in the choice task, but different from those in the bid task. Our findings suggest that the output format is the core reason for time preference reversal and may deepen our understanding of the mechanisms that underlie time preference reversal. (shrink)

As use of the Internet has increased, many issues of trust have arisen. Users wonder: will may privacy be protected if I provide information to this Internet vendor? Will my credit card remain secure? Should I trust that this party will deliver the goods? Will the goods be as described? These questions are not merely academic. A recent Boston Consulting Group study revealed that one out of ten consumers have ordered and paid for items online that never were delivered (...) (Williams, 2001). This year consumers filed around 11 000 complaints with the Federal Trade Commission alleging auction fraud, a figure up from the 107 lodged in 1997. It is no wonder that people are increasingly worried about whom to trust in online interactions. This paper explores the conditions under which online trust thrives and looks at examples of best and worst corporate practices. Online trust issues arise in a wide array of forums - chat rooms, news postings, e-catalogues, and retail transactions, to name a few. This paper focuses primarily on the online retail market, but the analysis applies to informational and entertainment sites as well. (shrink)

Solar radiation management (SRM) may help to reduce the negative outcomes of climate change by minimising or reversing global warming. However, many express the worry that SRM may pose a moral hazard, i.e., that information about SRM may lead to a reduction in climate change mitigation efforts. In this paper, we report a large-scale preregistered, money-incentivised, online experiment with a representative US sample (N = 2284). We compare actual behaviour (donations to climate change charities and clicks on climate change (...) petition links) as well as stated preferences (support for a carbon tax and self-reported intentions to reduce emissions) between participants who receive information about SRM with two control groups (a salience control that includes information about climate change generally and a content control that includes information about a different topic). Behavioural choices are made with an earned real-money endowment, and stated preference responses are incentivised via the Bayesian Truth Serum. We fail to find a significant impact of receiving information about SRM and, based on equivalence tests, we provide evidence in favour of the absence of a meaningfully large effect. Our results thus provide evidence for the claim that there is no detectable moral hazard with respect to SRM. [Open access]. (shrink)

Al Mele’s Manipulated Agents: A Window to Moral Responsibility (OUP 2019) is an extraordinarily careful and clear little book. A central recurring element is the use of examples of radical value reversals due to manipulation. In this commentary, I discuss the relevance of these examples to a simple quality of will account of blameworthiness without explicit historical conditions. Such an account, I suggest, can fairly straightforwardly explain how value reversals might mitigate blameworthiness. But I also suggest that the intuition that (...) they completely remove blameworthiness should instead be explained away. (shrink)

Abstract Pavel Florensky solves Lewis Carroll’s ‘Barbershop’ paradox to support his reasoning in a previous chapter. Our discussion includes a) the problem (which we also refer to as the p paradox), b) Carroll’s solution, c) Bertrand Russell’s solution, d) Florensky’s solution and then e) a material example proffered by Florensky. Both Russell and Florensky disagree with Carroll’s solution, yet, (ostensibly) unbeknownst to themselves they offer the same solution, which is ‘p implies not-q’. Given Florensky’s material example, the solution seems to (...) tell us something about the logic of belief. We ask whether Florensky’s example has reverse implications for Russell’s solution. Content Type Journal Article Pages 1-10 DOI 10.1007/s11406-011-9333-6 Authors Michael Rhodes, Philosophy and Religious Studies (NPD), Chicago, IL, USA Journal Philosophia Online ISSN 1574-9274 Print ISSN 0048-3893. (shrink)

Background Obtaining informed consent in the clinical setting is an important yet challenging aspect of providing safe and collaborative care to patients. While the medical profession has defined best practices for obtaining informed consent, it is unclear whether these standards meet the expressed needs of patients, their families as well as healthcare providers. The authors sought to address this gap by comparing the responses of these three groups with a standardised informed consent paradigm. Methods Piloting a web-based ‘reverse’ simulation (...) paradigm, participants viewed a video showing a standardised doctor engaging in an informed consent discussion. The scenario depicted a simulated patient with psychotic symptoms who is prescribed an atypical antipsychotic medication. 107 participants accessed the simulation online and completed a web-based debriefing survey. Results Survey responses from patients, family members and healthcare providers indicated disparities in information retention, perception of the doctor's performance and priorities for required elements of the consent process. Conclusions To enhance existing informed consent best practices, steps should be taken to improve patient retention of critical information. Adverse events should be described in the short-term and long-term along with preventative measures, and alternative psychosocial and pharmacological treatment options should be reviewed. Information about treatment should include when the medication takes therapeutic effect and how to safely maintain the treatment. The reverse simulation design is a model that can discern gaps in clinical practice, which can be used to improve patient care. (shrink)

Arguments for extended cognition and the extended mind are typically directed at human-centred forms of cognitive extension—forms of cognitive extension in which the cognitive/mental states/processes of a given human individual are subject to a form of extended or wide realization. The same is true of debates and discussions pertaining to the possibility of Web-extended minds and Internet-based forms of cognitive extension. In this case, the focus of attention concerns the extent to which the informational and technological elements of the (...) class='Hi'>online environment form part of the machinery of the (individual) human mind. In this paper, we direct attention to a somewhat different form of cognitive extension. In particular, we suggest that the Web allows human individuals to be incorporated into the computational/cognitive routines of online systems. These forms of computational/cognitive extension highlight the potential of the Web and Internet to support bidirectional forms of computational/cognitive incorporation. The analysis of such bidirectional forms of incorporation broadens the scope of philosophical debates in this area, with potentially important implications for our understanding of the foundational notions of extended cognition and the extended mind. (shrink)