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971.
Positive confirmation bias in the acquisition of information 总被引:1,自引:0,他引:1
An experiment is reported which tests for positive confirmation bias in a setting in which individuals choose what information to buy, prior to making a decision. The design – an adaptation of Wason's selection task – reveals the use that subjects make of information after buying it. Strong evidence of positive confirmation bias, in both information acquisition and information use, is found; and this bias is found to be robust to experience. It is suggested that the bias results from a pattern of reasoning which, although producing sub-optimal decisions, is internally coherent and which is self-reinforcing. 相似文献
972.
Competition and choice have become central means of improving public services in England. The former adviser to the Blair government Julian Le Grand has suggested that increased choice and competition should be the cornerstone of policy that aims to deliver more responsive and fairer results for the public. This article explores Le Grand's claims, deploying the conditions earlier suggested by him to examine the conditions which 'quasi-markets will have to meet if they are to succeed as instruments of social policy'. Claims about the efficacy of choice and competition policies in 2007 are assessed against the earlier conditions of market structure, information, transaction costs, uncertainty, motivation and cream-skimming, to examine the extent to which the reforms Le Grand has most recently proposed meet the conditions he earlier suggested would be necessary for markets to work in the public sector. 相似文献
973.
Elwood Spencer Buffa, a pioneer in production and operations management (P/OM), passed away in the summer of 2005, leaving his legacy behind. During his academic career Buffa made lasting contributions to teaching and research of P/OM. We review those contributions and their impact on the evolution of the P/OM discipline. 相似文献
974.
Martin Smith 《Social Work Education》2013,32(4):479-486
This paper begins by claiming that the telling and hearing of stories is intrinsic to the social work task. Examples of the value of hearing stories in a variety of social work roles are provided, as are examples of the theoretical underpinnings which substantiate the importance of enabling service users and carers to tell their stories. The main focus of the paper is on relating how audio-taping the experiences of service users and carers evolved as part of the author's work. With the permission of those interviewed, examples are quoted from accounts of three different family members attempting to deal with a relative's progressive deterioration into severe dementia. These accounts are followed by the memories of a woman who took an overdose and was subsequently ‘ectioned’ under The Mental Health Act 1983. An interview with two parents attempting to respond to the needs of their schizophrenic son is discussed. Some of the unexpected positive repercussions of recording interviews with these service users are described and some cautions are also highlighted. The paper concludes with suggestions of how audio-taping the stories of service users can be used to benefit social workers engaged in various aspects of social work today. 相似文献
975.
Martin Fochmann Johannes Hewig Dirk Kiesewetter Katharina Schüßler 《Zeitschrift für Betriebswirtschaft》2017,87(6):779-808
We experimentally investigate the effect of taxation of gains and losses on investment behavior. Based on the insights of economic research and psychological concepts, we expect subjects to react to taxation with behavioral and affective changes. Our main results are threefold: first, we show that taxation on gains and the possibility to deduct losses bias investment behavior, but in different directions. Since net payoffs are identical across all tax scenarios and therefore the same investment behavior is to be expected, these differences are in contrast to what a standard theory would predict. Second, we observe that different tax regulations have different effects on the affective and cognitive perception of our subjects. Third, with respect to possible connections of the affective and cognitive ratings, tax regulations, and investment decisions, we are able to show that arousal and risk perception fail to influence the decision making of participants, while there is a highly significant influence of valence perception on choice patterns. 相似文献
976.
This paper calls for a paradigm shift in the production control literature away from assuming due date setting and order release are two independent decision levels. When order release is controlled, jobs do not enter the shop floor directly but are retained in a pre-shop pool and released to meet certain performance targets. This makes the setting of accurate planned release dates – the point at which jobs transition from the pool to the shop floor – a key consideration when setting due dates. We develop a new approach to estimating planned release dates to be embedded in the Workload Control (WLC) concept. Our approach is unique as it anticipates the release decision as part of the due date setting procedure. This makes a second independent release decision superfluous and avoids a major cause of tardiness – deviations between (i) the planned release date used when calculating the delivery time allowance and (ii) the actual, realised release date. Simulation is used to compare the performance of WLC using two decision levels with the new single-level approach where the release decision is anticipated when setting the due date. Performance improvements are shown to be robust to uncertainty in processing time estimates. 相似文献
977.
Martin Böhm Jiří Sgall Rob van Stee Pavel Veselý 《Journal of Combinatorial Optimization》2017,34(3):810-828
Online Bin Stretching is a semi-online variant of bin packing in which the algorithm has to use the same number of bins as an optimal packing, but is allowed to slightly overpack the bins. The goal is to minimize the amount of overpacking, i.e., the maximum size packed into any bin.We give an algorithm for Online Bin Stretching with a stretching factor of 1.5 for any number of bins. We build on previous algorithms and use a two-phase approach. However, our analysis is technically more complicated and uses amortization over the bins with the help of two weight functions. 相似文献
978.
979.
René Belderbos Victor Gilsing Boris Lokshin Martin Carree Juan Fernández Sastre 《Long Range Planning》2018,51(2):285-302
We examine firms' propensity to adapt their R&D collaboration portfolio by establishing new types of R&D collaboration with different kinds of partners (suppliers, customers, competitors and universities & public research institutions). We argue that existing R&D collaboration with one of the two value chain partners (suppliers or customers) is associated with the formation of new R&D collaboration with the other value chain partner to ensure temporal alignment in innovation within the value chain. In contrast, issues related to governance and unintended knowledge spillovers suggest that ‘horizontal’ R&D collaboration with competitors only spurs R&D collaboration with other partner types if such competitor R&D collaboration has been discontinued earlier (‘delayed temporal alignment’). We posit that persistent prior R&D collaboration with institutional partners is an antecedent to the establishment of new R&D collaboration with industrial partners, and that discontinuation of a particular type of R&D collaboration is likely to lead to a restart of such R&D collaborative effort. Strong prior innovative performance is expected to increase the probability that firms establish R&D collaborations with new partner types, except for R&D collaboration with competitors, since the most innovative firms may fear leakage of proprietary knowledge to rivals. We find broad support for these predictions in a large panel of Spanish innovating firms (2004–2011). Our findings highlight that it is not just the configuration of R&D collaborations with existing partner types that predicts tie formation with new partner types, but also the intertemporal pattern of prior R&D collaboration and managerial discretion provided by past innovation success. 相似文献
980.
Ainhoa Urtasun-Alonso Martin Larraza-Kintana Carmen García-Olaverri Emilio Huerta-Arribas 《生产规划与管理》2013,24(4):303-317
This article analyses the connection between the use of advanced human resource management (HRM) practices, individually and as a system, with manufacturing flexibility. The results show a positive relationship between the implementation of advanced HRM practices and manufacturing flexibility. While most of the advanced HRM practices analysed show higher levels of implementation in flexible firms, no differences are observed in training efforts. Flexible firms are more prone to implement systems of advanced HRM practices. 相似文献