{"title":"Lattices and Lotteries","authors":"E. Antoniadou, Leonard J. Mirman, Richard Ruble","doi":"10.2139/ssrn.1360658","DOIUrl":"https://doi.org/10.2139/ssrn.1360658","url":null,"abstract":"We consider the consumer problem under uncertainty when the consumer can choose the quantity of a risk-free good and the lottery, or distribution, of a risky good from a set of distributions. These goods are imperfect substitutes in the consumer preferences, with additive preferences a special case. We develop sufficient conditions for the choice of the risky good to be monotone with respect to income, exploring different notions of monotonicity. The sufficient conditions are ordinal, independent of concavity, and do not require differentiability or continuity. Cardinal conditions and conditions from the single good case are not necessary and are not always sufficient. The sufficient conditions are formulated in appropriate value lattices. The framework is flexible and adaptable to handle different uncertainty applications. Examples demonstrate the sufficient conditions and different applications where available lotteries may be finite in number, may have discrete support, or may form a chain or a lattice.","PeriodicalId":400873,"journal":{"name":"Microeconomics: Information","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114625011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Leveraging of Reputation Through Umbrella Branding with and Without Market Power","authors":"E. Rasmusen","doi":"10.2139/ssrn.1989066","DOIUrl":"https://doi.org/10.2139/ssrn.1989066","url":null,"abstract":"The Klein-Leffler model explains how the benefit of future reputation can induce firms to produce high quality experience goods, either in a monopoly or an industry with competing firms. We show that reputation can be leveraged across products, but only by a firm with a monopoly on at least one product. Such a firm, however, may be able to capture the market for a competitive product by using umbrella pricing to make higher quality more credible than for firms without a monopoly base. Such monopoly extension increases social welfare, and can even benefit consumers, despite the increase in price. The expanding monopolist does not need to use bundling, and consumers are left better off, but otherwise this looks like classic monopoly leverage.","PeriodicalId":400873,"journal":{"name":"Microeconomics: Information","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125126180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Unsure What the Future Will Bring? You May Overindulge: Uncertainty Increases the Appeal of Wants over Shoulds","authors":"Katherine L. Milkman","doi":"10.2139/ssrn.1393535","DOIUrl":"https://doi.org/10.2139/ssrn.1393535","url":null,"abstract":"This paper examines the effect of uncertainty about the future on whether individuals select want options (e.g., junk foods, lowbrow films) or instead exert self-control and select should options (e.g., healthy foods, highbrow films). Consistent with the ego-depletion literature, which suggests that self-control resembles an exhaustible muscle, coping with uncertainty about what the future may bring reduces self-control resources and increases individuals’ tendency to favor want options over should options. These results persist when real uncertainty is induced, when the salience of naturally-arising uncertainty is heightened and when individuals are able to make choices contingent upon the outcomes of uncertain events. Overall, this work suggests that reducing uncertainty in a decision maker’s environment may have important spillover effects, leading to less impulsive choices.","PeriodicalId":400873,"journal":{"name":"Microeconomics: Information","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115038471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"General Equilibrium Analysis of Hold‐Up Problem and Non‐Exclusive Franchise Contract","authors":"Chihning Chu, Wai-Man Liu","doi":"10.1111/j.1468-0106.2010.00523.x","DOIUrl":"https://doi.org/10.1111/j.1468-0106.2010.00523.x","url":null,"abstract":"In this paper, we develop a general equilibrium model that examines the emergence of non-exclusive franchise contracts in the presence of the franchisor hold‐up problem. Our model of an endogenous franchising network underscores the trade‐off between the cost associated with specifying and enforcing the contractual terms and the cost associated with broadening the relationships with multiple franchisors. We show that when the contracting cost relative to the relational cost is high and when the economies of specialization is low, a non‐exclusive franchise contract is an optimal contractual arrangement to mitigate franchisor opportunism.","PeriodicalId":400873,"journal":{"name":"Microeconomics: Information","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130066752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kinshuk Jerath, Liye Ma, Young-Hoon Park, K. Srinivasan
{"title":"A 'Position Paradox' in Sponsored Search Auctions","authors":"Kinshuk Jerath, Liye Ma, Young-Hoon Park, K. Srinivasan","doi":"10.2139/ssrn.1464545","DOIUrl":"https://doi.org/10.2139/ssrn.1464545","url":null,"abstract":"We study the bidding strategies of vertically differentiated firms that bid for sponsored search advertisement positions for a keyword at a search engine. We explicitly model how consumers navigate and click on sponsored links based on their knowledge and beliefs about firm qualities. Our model yields several interesting insights and a main counter-intuitive result we focus on is the position paradox.\" The paradox is that a superior firm may bid lower than an inferior firm and obtain a position below it, yet still obtain more clicks than the inferior firm. Under a pay-per- impression mechanism, the inferior firm wants to be at the top where more consumers click on its link, while the superior firm is better off by placing its link at a lower position as it pays a smaller advertising fee but some consumers will still reach it in the search of a higher-quality firm. Under a pay-per-click mechanism, the inferior firm has an even stronger incentive to be at the top since now it only has to pay for the consumers who do not know the firms' reputations and, therefore, can bid more aggressively. Interestingly, as the quality premium for the superior firm increases, and/or if more consumers know the identity of the superior firm, the incentive for the inferior firm to be at the top may increase. Contrary to conventional belief, we find that the search engine may have the incentive to over-weight the inferior firm's bid and strategically create the position paradox to increase overall clicks by consumers. To validate our model, we analyze a dataset from a popular Korean search engine firm and find that: (i) a large proportion of auction outcomes in the data show the position paradox, and (ii) sharp predictions from our model are validated in the data.","PeriodicalId":400873,"journal":{"name":"Microeconomics: Information","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128937701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"How Does the Variance of Product Ratings Matter?","authors":"Monic Sun","doi":"10.2139/ssrn.1400173","DOIUrl":"https://doi.org/10.2139/ssrn.1400173","url":null,"abstract":"This paper examines the informational role of product ratings. We build a theoretical model in which ratings can help consumers figure out how much they would enjoy the product. In our model, a high average rating indicates a high product quality, whereas a high variance of ratings is associated with a niche product, one that some consumers love and others hate. Based on its informational role, a higher variance would correspond to a higher subsequent demand if and only if the average rating is low. We find empirical evidence that is consistent with the theoretical predictions with book data from Amazon.com and BN.com. A higher standard deviation of ratings on Amazon improves a book's relative sales rank when the average rating is lower than 4.1 stars, which is true for 35% of all the books in our sample. \u0000 \u0000This paper was accepted by Pradeep Chintagunta, marketing.","PeriodicalId":400873,"journal":{"name":"Microeconomics: Information","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129046777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Demand for Information","authors":"G. Sims","doi":"10.2139/ssrn.1630244","DOIUrl":"https://doi.org/10.2139/ssrn.1630244","url":null,"abstract":"I use a new measure of investor attention and measure its affect on the returns of winner and loser portfolios over a holding period of up to 52 weeks. Whilst I do not find any relationship between Stock Information Demand and price momentum, I do find that increases in investor attention affect the demand for stocks, which for ‘winner stocks’ in turn pushes prices up. I find evidence of this effect in a small sample of large, highly traded, and closely followed firms, i.e. the S&P500.My measure of attention is derived from the Google Insights for Search webpage, which allows access to the relative volumes of search criteria submitted to Google each week, since 2004. This measure of attention, which I call the Stock Information Demand (SID) is a more direct measure of market participants’ behaviour than previous studies have used.I evaluate the returns to the S&P500 constituents over five years, and find that stocks with high degrees of Stock Information Demand(SID) that have increased in price over the previous 4 weeks tend to continue to increase in price for a further 4 weeks. Stocks with low levels of SID do not show the same continued price appreciation. Further to this, I also find less robust evidence that stocks which have declined in price over the previous 4 weeks, and have not been subject to high levels of SID show a continued longer term price decline, out to 52 weeks in some cases.I am not able to measure any significant degrees of price reversal, and hence over reaction, or of robust under reaction, so am not able to add further evidence to the two behaviour models provided by K. Daniel, Hirshleifer, & Subrahmanyam (1998) or Barberis, Shleifer, & Vishny (1998). My results support the previous findings of Hong, Lim, & Stein (2000) and of Chan (2003), in that stocks react quickly to good news, and slowly to bad news. My results also support previous studies of attention, such as Barber & Odean (2008), and the related work Barber, Odean, & Zhu (2006), showing that stocks subject to investor’s attention do change in price, and that noise traders are capable of moving market prices.","PeriodicalId":400873,"journal":{"name":"Microeconomics: Information","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131723270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bank Bailout Menus","authors":"S. Bhattacharya, Kjell G. Nyborg","doi":"10.2139/ssrn.1625641","DOIUrl":"https://doi.org/10.2139/ssrn.1625641","url":null,"abstract":"Bailing out banks requires overcoming debt overhang as well as dealing with adverse selection with respect to the quality of banks' balance sheets, in terms of heterogeneity in both the likelihood and extent of their potential shortfalls, of future asset values vis-a-vis contractual debt obligations. We examine bailouts that eliminate debt overhang, while attempting to minimize subsidies to banks' equityholders. When banks do not di ffr with respect to the extent of debt overhang, it can be fully overcome with the minimal amount of subsidies, providing each bank's equity holders no more than their pre-bailout values, with a partial new equity injection, or an asset buyout. When levels of debt overhang co-vary with underlying probabilities of default, we characterize the conditions for attaining a similar minimal subsidy outcome, with a Menu of either equity injection or asset buyout plans, satisfying suitable self-selection constraints among bank types. These involve global rather than local conditions, with multiple intersections of indi fffrence curves among types, and imply strictly greater funds injections than those needed to make existing debt default-free. We also explore the role of coupling asset purchases with providing the bailout agency Options to buy bank equity, to enhance its capture of rents arising from new investments by banks. We compare its performance with equity injections on this dimension, as well as others such as post-bailout stakes held by prior inside equity holders of banks.","PeriodicalId":400873,"journal":{"name":"Microeconomics: Information","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129398446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Koray Özpolat, G. Gao, Wolfgang Jank, S. Viswanathan
{"title":"The Value of Online Trust Seals: Evidence from Online Retailing","authors":"Koray Özpolat, G. Gao, Wolfgang Jank, S. Viswanathan","doi":"10.2139/ssrn.1592480","DOIUrl":"https://doi.org/10.2139/ssrn.1592480","url":null,"abstract":"Although third-party trust seals have been in use for long by online retailers, systematic studies of the effectiveness of these trust signaling mechanisms are scarce. Using a unique dataset of over a quarter million online transactions across 493 online retailers, this study seeks to empirically measure the value and effectiveness of trust seals on the likelihood of purchase by shoppers. The dataset is collected from a randomized field experiment by a large trust seal provider, which enables us to infer the causal impacts of the presence of an online trust seal. We find that the presence of the online trust seal increases the odds of completion of purchase. We further find that online trust seals serve as partial substitutes for both shopper experience and seller size. Interestingly, the effect of the number of trust seals is not linear – we find that the presence of too many seals lower completion rates. We discuss the implication of our findings for online retailers, third-party certifiers, as well as for policy makers.","PeriodicalId":400873,"journal":{"name":"Microeconomics: Information","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123992298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Active Risk Budgeting: Volatility is Not Standard Deviation","authors":"M. Leblanc","doi":"10.2139/ssrn.1407584","DOIUrl":"https://doi.org/10.2139/ssrn.1407584","url":null,"abstract":"We try to show the danger of confusing the concept of volatility with that of the standard deviation of a probability distribution. We work in the theoretical Black-Scholes model to give an explicit relationship between the two measures. We apply and then illustrate this relationship, firstly in a classical value at risk approach, secondly in the determination of the risk contributions of a portfolio. We see profound differences that should not lead to the rapprochement of the volatility and the standard deviation","PeriodicalId":400873,"journal":{"name":"Microeconomics: Information","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115819220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}