Correction to: The impact of a U.S.–U.K. free trade agreement on workers: a CGE model with worker displacement

Business Economics -     

ANALYTICAL COMPARISONS OF OPTION PRICES IN STOCHASTIC VOLATILITY MODELS

This paper gives an ordering on option prices under various well-known martingale measures in an incomplete stochastic volatility model. Our central result is a comparison theorem that proves convex option prices are decreasing in the market price of volatility risk, the parameter governing the choice of pricing measure. The theorem is applied to order option prices under q -optimal pricing measures. In doing so, we correct orderings demonstrated numerically in Heath, Platen, and Schweizer ( Mathematical Finance , 11(4), 2001) in the special case of the Heston model.     

United States - The Downgrade Scenario

Summary The US debt-ceiling negotiations in Washington are showing little progress as the 2 August deadline approaches.Based on the latest proposals under discussion, the chances of a debt-ceiling hike which also incorporates USD 4trn worth of deficit cuts over the next decade are slim.This is important, as it means that S&P is likely to downgrade the US sovereign rating from AAA to AA, even if the debt ceiling is raised.Note that in an interview with Dow Jones, one of S&P's credit analysts said that to avoid a downgrade, the US needs to agree to reduce the fiscal deficit by over USD 4tm over the next ten years.This is what S&P sees as the required amount to prevent the total government debt-to-GDP ratio from rising.Therefore, a debt-ceiling deal with deficit cuts falling short of this could mean a downgrade by at least one of the three key rating agencies.     

The Robust Relationship Between US Food Aid and Civil Conflict

Humanitarian aid has long been considered an important means to reduce hunger and suffering in developing countries. A recent finding by Nunn and Qian (US food aid and civil conflict, American Economic Review 2014; 104 : 1630–1666) that such aid from the US increases the incidence and duration of civil conflict in recipient countries, however, questions the effectiveness of this policy and poses a serious policy concern for the US government. We revisit this issue by conducting a successful replication study of the results in their paper. In order to further scrutinize their claims that a heterogeneous effect of food aid on conflict is not present, we employ a semiparametric endogenous estimation procedure. We show that their parametric models cannot be rejected and argue that their findings are robust. Copyright © 2016 John Wiley & Sons, Ltd.     

Platform Owner Entry and Innovation in Complementary Markets: Evidence from Intel

This paper explores Intel's strategy with respect to complements. We find that, as the literature predicts, Intel's entry decisions are shaped by the belief that it does not have the capabilities to enter all possible markets, and thus that it must encourage widespread entry despite the fact that potential entrants (rationally) fear Intel's ability to "squeeze" them ex post. We explore the ways in which Intel addresses this issue, highlighting in particular the firm's use of organizational structure and processes as commitment mechanisms. Our results have implications for our understanding of the dynamics of competition in complements and of the role of organizational form in shaping competition.     

Mindfulness-based training interventions for employees: A qualitative review of the literature

We provide a comprehensive qualitative review of 67 published studies that have examined mindfulness-based training interventions conducted with employees. The findings indicate that the most common research designs were the pre-test/post-test only design (35.8%) and the randomized waitlist control group design (26.9%). About two-thirds of the studies included a control group (61.2%), with approximately three-quarters (75.6%) of these studies using random assignment. Of the 63 studies that used a conventional experimental design, the majority (65.1%) included only one follow-up assessment, most often immediately after training. Results indicated a great degree of heterogeneity in terms of program content, although many studies used some adaptation of Kabat-Zinn's (1990) Mindfulness-Based Stress Reduction (41.8%), an approach with a strong evidentiary base with clinical populations. All training programs incorporated practice, most (85.1%) used multiple methods of delivering the training material, and training varied considerably in total duration, session length, and the number of training sessions. Our review also found that the intended purpose of mindfulness-based training for employees was most commonly the reduction of stress/strain (80.6%), although a wide range of other targeted outcomes were documented. Based on our findings, we offer suggestions for future research aimed at advancing our understanding of mindfulness-based training interventions with employees.     

Power and firm profitability in supply chains: french manufacturing industry in 1993

The paper examines the relationships between the power of suppliers and buyers and the profitability of sellers who are situated in supply chains between both sets of firms. A review of the literature on power in exchange relations shows there are several power concepts which may have a different impact on seller profitability and whose impact possibly can offset each other. This may be the source of the conflicting evidence on this topic. A failure to distinguish among the concepts may also lead to an underestimation of industry effects relative to resource effects as drivers of firm profitability. The paper uses a new data base of the Banque de France on French manufacturing industry. The anlayses examine whether different power concepts may be empirically identified and what their relationships are with seller profitability. The findings point to the existence of multiple power concepts and indicate that, in the sample, industry effects are more important than firm effects (as measured by relative market share) in explaining seller profitability. The findings also suggest that buyer power explains a much larger percentage of the variance in seller profitability than supplier power. © 1998 John Wiley & Sons, Ltd.     

The Impact of Housing Vouchers on Mobility and Neighborhood Attributes

This article examines the effect of receiving a housing voucher on the mobility and neighborhood attributes of low‐income households. Housing policy has shifted toward vouchers in lieu of public housing projects to allow households to move away from high‐poverty areas. We use administrative records collected from an experiment to examine this issue. We find that households moved immediately after receiving the subsidy but did not relocate to lower poverty neighborhoods until several quarters later. Our findings suggest that recipients initially lease in nearby units to secure the subsidy, while continuing to search for housing in lower poverty neighborhoods.