Financial market equilibria with cumulative prospect theory

The paper first shows that financial market equilibria need not to exist if agents possess cumulative prospect theory preferences with piecewise-power value functions. This is due to the boundary behavior of the cumulative prospect theory value function, which might cause an infinite short-selling problem. But even when a non-negativity constraint on final wealth is added, non-existence can occur due to the non-convexity of CPT preferences, which might cause discontinuities in the agents’ demand functions. This latter observation also implies that concavification arguments which has been used in portfolio allocation problems with CPT preferences do not apply to our general equilibrium setting with finite many agents. Existence of equilibria is established when non-negativity constraints on final wealth are imposed and there is a continuum of agents in the market. However, if the original prospect theory is used instead of cumulative prospect theory, then other discontinuity problems can cause non-existence of market equilibria even in this case.     

Are semi-presidential constitutions bad for democratic performance?

Many countries since 1990 have adopted semi-presidential constitutions, which are often considered to be problematic, primarily because of the potential for conflict between the assembly-supported government and the popularly elected president. Such conflicts are said to lead to unstable governments, policy paralysis and the eventual undermining of the democratic regime. Using data for all parliamentary and semi-presidential democracies between 1946 and 2006, we examine the effect of semi-presidential constitutions on the duration of prime ministers’ tenure in office, government accountability with respect to economic outcomes, and democratic survival. We also examine (for a smaller sample of post-communist countries) the impact of these constitutions on the progress of structural reforms. We find that the observed higher instability of prime ministers in semi-presidential democracies is more due to the electoral system than to the presence of a popularly elected president. We also find that semi-presidential constitutions have little impact on the government’s accountability to economic outcomes and on the survival of democratic regimes. Finally, we find that neither a weak president nor a weak government is optimal for the progress of economic reforms in post-communist countries. Regarding economic reforms, the optimal allocation of constitutional powers between the president and the government grants both significant powers.     

Bank mergers in spatially differentiated markets

This paper studies the incentives of banks to merge when competing in differentiated markets. Localized competition effects and spatial competition variables can play a key role in defining the patterns of consolidation in this sector. We consider a model where banks compete in distinct spaces of depositor's characteristics. Regional merger is the outcome of the merger game if the spatial scope of demand is low and/or accessibility of services is not costly outside the home region. Otherwise, cross-regional merger is the outcome of the game. The results are consistent with the recent evolution of banking systems in many developed countries.     

Identifying personality traits to enhance trust between organisations: an experimental approach

We investigate an experimental representatives' trust game which resembles trust relationships between representatives of organisations. Personality traits of subjects are elicited by a personality questionnaire (Cattell's 16 PF‐R) which is well established in personnel psychology. For the first time, personality traits are linked to actually observed behaviour in a trust game. Detailed personality profiles are derived and it is shown that they differ significantly between behavioural types. Individuals with low scores in anxiety turn out to be particularly qualified for enhancing trust between organisations. Copyright © 2008 John Wiley & Sons, Ltd.     

Privatization in PolandWhat was the government trying to achieve?1

This article uses the sequencing of privatization to infer the objective pursued by the Polish government in the privatization of its large manufacturing firms in the second half of the 1990s. We construct a model of mixed oligopoly and use it to evaluate the privatization process; our analysis is based on the assumption that firms which furthered the government's objective function the most would be chosen to be privatized first. Based on the features of the firms that were chosen for early privatization, our empirical analysis suggests that welfare maximization was more important than the desire to maximize the revenues from privatization and the government's budget or to minimize employment losses.     

国家技术安全初探——从利用外资角度

技术安全是个崭新的研究领域。在其定义和内容上，目前我国学者看法不一。冯鹏志等将技术视作宏观经济的影响变量之一，着重阐述科学技术发展对国家的社会、政治、经济、军事和信息等方面的安全所产生的具体影响。刘跃进认为其内容主要包括科技成果的安全、科技人才的安全和科技活动的安全。滕飞则认为技术安全是指在一定的社会环境条件下，以国家价值准则为依据对国家技术系统及其发展态势的一种动态描述。     

Response modes in negotiation

Negotiators may respond to each other’s offers and demands in different ways. Whereas many negotiation experiments present participants with numerical information about offers and counteroffers (e.g., “I propose 6–8–2”; numerical response mode), real life negotiations often involve affective and evaluative statements (e.g., “I didn’t like your last offer, but I would be happy to explore alternatives”; affective response mode). The present research explores the differential consequences of responding in affective as opposed to numerical terms. Specifically, we predicted and found that affective responses increase the impact of social and contextual cues on negotiation behavior. Three studies demonstrate that the impact of other’s toughness (Experiment 1), other’s respectability (Experiment 2), and other’s appearance (Experiment 3) on a negotiator’s demands and concessions is greater when the other provides affective rather than numerical feedback.     

DOMESTIC AND INTERNATIONAL INNOVATION PARTNERSHIPS: DO THEY MATTER FOR INNOVATION OUTCOMES OF SOUTH AFRICAN FIRMS?

This paper studies the impact of the diversity of domestic and international innovation partnerships on the innovation outcomes of South African firms. A number of competing hypotheses are formulated and tested empirically using a sample of South African firms in manufacturing and services by applying Ordinary Least Squares regression analyses. Results show that having an innovation partnership, particularly an international partnership, is beneficial to innovation outcomes. However, it also emerges that too diverse a set of international partnerships is detrimental to innovation outcomes. The paper concludes with a discussion and a number of proposals for future research.     

Demand-Creating R&D in a Symmetric Oligopoly

Spillovers with demand-creating research and development (R&D) activities are investigated by revisiting a widely employed market share rivalry demand structure. Positive technological spillovers may inflict positive or negative side effects on rivals and this has important implications for the effects on innovative efforts of loose or tight R&D cooperation in symmetric oligopolies. A comparison with the effects that apply with linear demand structures and implications for empirical research are also touched upon.     

Consumers' perceptions of individual and combined sustainable food labels: a UK pilot investigation

Consumers are faced with an increasing number of sustainable food labels. These different labels may be complementary or add to the increasing competition of product information in consumers' minds. We investigate: (1) the perceptions that consumers in the UK have about sustainable labels vs. other labels, such as origin or nutrition labels; and (2) consumers' reactions to combinations of different sustainable labels. Overall, the findings from two focus groups conducted in the UK indicate that consumers have positive perceptions of organic and fair trade labels but tend to be sceptical about unfamiliar labels and general claims such as ‘climate friendly’. The results also indicate the importance of familiarity, trust and fit between combinations of labels as well as between associating a label with a brand. While the combination of certain labels can enhance the value of a food product, this study also indicates that other label combinations (e.g. private and sustainable label) can detract from a label's value. Implications and recommendations are suggested for managers to counter the image of greenwashing, and for policy makers to facilitate sustainable food choices.