Understanding conflicting views of endocrine disruptor experts: a pilot study using argumentation analysis

Abstract

To what extent do substances have the potential to cause adverse health effects through an endocrine mode of action? This question elicited intense debates between endocrine disrupting substances (EDS) experts. The pervasive nature of the underlying differences of opinion justifies a systematic analysis of the argumentation put forward by the experts involved. Two scientific publications pertaining to EDS science were analyzed using pragma-dialectical argumentation theory (PDAT). PDAT’s methodology allowed us to perform a maximally impartial and systematic analysis. Using PDAT, the structure of the argumentation put forward in both publications was reconstructed, main standpoints, and arguments were identified, underlying unexpressed premises were made explicit and major differences in starting points were uncovered. The five differences in starting points identified were subdivided into two categories: interpretative ambiguity about underlying scientific evidence and normative ambiguity about differences in broader norms and values. Accordingly, two differences in starting points were explored further using existing risk and expert role typologies. We emphasize that particularly the settlement of normative ambiguity, through the involvement of broader ethical, social or political values, inherently requires multi-stakeholder approaches. Extrapolation of our findings to the broader discussion on EDS science and further exploration of the roles of EDS experts in policy processes should follow from further research.     

The determinants of price discovery on bitcoin markets

This paper investigates whether market quality, uncertainty, investor sentiment and attention, and macroeconomic news affect bitcoin price discovery in spot and futures markets. Over the period December 2017–March 2019, we find significant time variation in the contribution to price discovery of the two markets. Increases in price discovery are mainly driven by relative trading costs and volume, and uncertainty to a lesser extent. Additionally, medium-sized trades contain most information in terms of price discovery. Finally, higher news-based bitcoin sentiment increases the informational role of the futures market, while attention and macroeconomic news have no impact on price discovery.     

The smarter,the better?! Customer well-being,engagement, and perceptions in smart service systems

Smart service systems – that is, configurations of smart products and service providers that deliver smart services – are striving to increase the smartness of their offering, but potential consequences for customer well-being are largely overlooked. Therefore, this research investigates the impact of smartness on customer well-being (here, self-efficacy and technology anxiety) through (1) customer engagement with different smart service system actors (here, smart products and service providers) and (2) customer perceptions (here, personalization and intrusiveness perceptions) and their associated importance (here, need for personalization and intrusiveness sensitivity). A scenario-based experiment (n = 730) – which is preceded by a systematic review to conceptualize smartness – shows that customers perceive more personalization than intrusiveness in case of higher levels of smartness, resulting in customer engagement with the smart product and to some extent with the service provider. Via customer engagement with the smart product, higher levels of smartness stimulate self-efficacy, especially for customers with a high need for personalization. When customers' need for personalization is high and their intrusiveness sensitivity is low, higher levels of smartness also reduce technology anxiety via customer engagement with the smart product. Hence, the conclusion is: “The smarter, the better!”, whereby the relationship between smartness and well-being (here, self-efficacy and technological anxiety) is significantly influenced by customer heterogeneity. These findings help business practitioners in boosting customer well-being by increasing customer engagement through higher levels of smartness of their service system.     

Transnational tourism education and student approaches to learning: is there a mismatch?

This article employs a novel approach by investigating Chinese students from a transnational tourism management programme in Hong Kong and Chinese students studying on a similar programme at the degree-awarding UK university. This quantitative study investigates whether there are any differences between two groups of students in terms of their approaches to learning, preferred learning and teaching methods and their satisfaction with the programme. The findings demonstrate significant differences between the two cohorts, indicating that a programme cannot be easily exported. The implications of the findings for the transnational curriculum, learning and teaching practice and theories of student approaches to learning are discussed.     

Global Retail Chains and Poor Farmers: Evidence from Madagascar

Global retail companies (“supermarkets”) have an increasing influence on developing countries, through foreign investments and/or through the imposition of their private standards. The impact on developing countries and poverty is often assessed as negative. In this paper we show the opposite, based on an analysis of primary data collected to measure the impact of supermarkets on small contract farmers in Madagascar, one of the poorest countries in the world. Almost 10,000 farmers in the Highlands of Madagascar produce vegetables for supermarkets in Europe. In this global supply chain, small farmers’ micro-contracts are combined with intensive farm assistance and supervision programs to fulfill complex quality requirements and phyto-sanitary standards of supermarkets. Small farmers that participate in these contracts have higher welfare, more income stability and shorter lean periods. We also find significant effects on improved technology adoption, better resource management and spillovers on the productivity of the staple crop rice. The small but emerging modern retail sector in Madagascar does not (yet) deliver these benefits as they do not (yet) request the same high standards for their supplies.     

DETERMINANTS AND CONSEQUENCES OF TASK UNCERTAINTY: A LABORATORY AND FIELD INVESTIGATION

This article presents evidence and argument concerning the utility of the concept of task uncertainty for organization theory and practice. The results from two studies, one field and one laboratory, are reported. The results support the hypotheses that: (1) perceptions of task uncertainty are a simple function of the number and analysability of exceptions encountered, and (2) perceptions of task exceptions and search difficulty have distinct relationships with behaviours of interest (communication and decision-making). Given these two findings, it is argued that the concept of task uncertainty should be replaced by the two source constructs.     

Breaking the waves: a Poisson regression approach to Schumpeterian clustering of basic innovations

The Schumpeterian theory of long waves has given rise to anintense debate on the existence of clusters of basic innovations.Silverberg and Lehnert have criticised the empirical part ofthis literature on several methodological accounts. In thispaper, we propose the methodology of Poisson regression as alogical way of incorporating this criticism. We construct anew time series for basic innovations (based on previously usedtime series), and use this to test the hypothesis that basicinnovations cluster in time. We define the concept of clusteringin various precise ways before undertaking the statistical tests.The evidence we find supports only the ‘weakest’of our clustering hypotheses, i.e., that the data display overdispersion.We thus conclude that the authors who have argued that a longwave in economic life is driven by clusters of basic innovationshave stretched the statistical evidence too far.     

Technological Diversification, Coherence, and Performance of Firms

Technological diversification at the firm level (i.e., the expansion of a firm's technology base into a wide range of technology fields) is found to be a prevailing phenomenon in all three major industrialized regions,—the United States, Europe, and Japan—prompting the term multitechnology corporation. Whereas previous studies have provided insights into the composition of technology portfolios of multitechnology firms, little is known about the relationship between technological diversification and firms' technological performance. Against a backdrop of the technology and innovation management literature, the present article investigates the relationship between technological diversification and technological performance, taking into account the moderating role of technological coherence in firms' technology portfolios. Hereby, technological coherence is defined as the degree to which technologies in a technology portfolio are technologically related. To measure the technological coherence of portfolios, a measure of technological relatedness of technology fields is constructed based on patent citation patterns found in 450,000 European Patent Office (EPO) patent grants. Two hypotheses are presented here: (1) Technological diversification has an inverted U‐shaped relationship with technological performance; and (2) technological coherence moderates the relationship between technological diversification and technological performance positively. These hypotheses are tested empirically using a panel data set (1995–2003) on patent portfolios pertaining to 184 U.S., European, and Japanese firms. The firms selected are the largest research and development (R&D) actors in five industries: pharmaceuticals and biotechnology; chemicals; engineering and general machinery; information technology (IT) hardware (i.e., computers and communication equipment); and electronics and electrical machinery. Empirical results, obtained by fixed‐effects negative binomial regressions, support both hypotheses in the present article. Technological diversification has an inverted U‐shaped relationship with technological performance. Technological diversification offers opportunities for cross‐fertilization and technology fusion, but high levels of diversification may yield few marginal benefits as firms risk lacking sufficient levels of scale to benefit from wide‐ranging technological diversification, and firms may encounter high levels of coordination and integration costs. Further, the results show that the net benefits of technological diversification are higher in technologically coherent technology portfolios. If firms build up a technologically coherent diversified portfolio, the presence of sufficient levels of scale is ensured and coordination costs are limited. At the same time, technologically coherent diversification puts firms in a better position to benefit form cross‐fertilization between technologies. The present article clearly identifies the important role of technological coherence in technology diversification strategies of firms.     

Is Land Titling in Sub-Saharan Africa Cost-Effective? Evidence from Madagascar

Formalizing land rights has been promoted as a way to encourageagricultural investment and stimulate land markets, yet littleis known about the benefits of such policies in Sub-SaharanAfrica, where the preconditions for success are less favorable.The analysis uses a large sample of plots from an intensivelytitled rice-growing area of Madagascar and compares land-specificinvestments, land productivity, and land values for titled anduntitled plots cultivated by the same household. Having a titlehas no significant effect on plot-specific investment and correspondinglylittle effect on land productivity and land values. These resultsare broadly consistent with a simulation of a theoretical modelof investment under expropriation risk calibrated to the samedata. A cost–benefit analysis suggests that the currentsystem of formal titling should not be extended in rural Madagascarand that any new system of land registration would have to bequite inexpensive to be worthwhile.