| 1. |
- Botvinik-Nezer, Rotem, et al.
(författare)
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Variability in the analysis of a single neuroimaging dataset by many teams
- 2020
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Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 582, s. 84-88
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Tidskriftsartikel (refereegranskat)abstract
- Data analysis workflows in many scientific domains have become increasingly complex and flexible. Here we assess the effect of this flexibility on the results of functional magnetic resonance imaging by asking 70 independent teams to analyse the same dataset, testing the same 9 ex-ante hypotheses(1). The flexibility of analytical approaches is exemplified by the fact that no two teams chose identical workflows to analyse the data. This flexibility resulted in sizeable variation in the results of hypothesis tests, even for teams whose statistical maps were highly correlated at intermediate stages of the analysis pipeline. Variation in reported results was related to several aspects of analysis methodology. Notably, a meta-analytical approach that aggregated information across teams yielded a significant consensus in activated regions. Furthermore, prediction markets of researchers in the field revealed an overestimation of the likelihood of significant findings, even by researchers with direct knowledge of the dataset(2-5). Our findings show that analytical flexibility can have substantial effects on scientific conclusions, and identify factors that may be related to variability in the analysis of functional magnetic resonance imaging. The results emphasize the importance of validating and sharing complex analysis workflows, and demonstrate the need for performing and reporting multiple analyses of the same data. Potential approaches that could be used to mitigate issues related to analytical variability are discussed. The results obtained by seventy different teams analysing the same functional magnetic resonance imaging dataset show substantial variation, highlighting the influence of analytical choices and the importance of sharing workflows publicly and performing multiple analyses.
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| 2. |
- Kallio, Maarit Helena, et al.
(författare)
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The colour of maize : Visions of green growth and farmers perceptions in northern Laos
- 2019
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Ingår i: Land use policy. - : Elsevier BV. - 0264-8377 .- 1873-5754. ; 80, s. 185-194
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Tidskriftsartikel (refereegranskat)abstract
- The rapid expansion of hybrid maize in the uplands of northern Laos is viewed by the government as meeting policy aims related to green economic development. Yet, growing evidence of negative consequences of maize expansion are emerging. Based on farmers' perceptions, we study: (1) farmers' reasons for adopting and abandoning maize, and; (2) implications of commercial maize expansion on local livelihood security and inclusiveness (food supply, income, risk coping, and ability to join maize growing), and environmental sustainability (productivity, and soil and forest quality) over time (2013 and 2016). Results show that maize has advantages in terms of labour allocation, and it provides much-needed cash income. Yet, swidden is the main food provider and an essential safety net for unforeseen risks (including maize crop failures or price fluctuations). The way that maize was produced did not meet the criteria of green economic development due to its negative effects on the environment (soil and forest degradation) and socioeconomic sustainability (household differentiation, increased economic risks, debts, and food insecurity). By providing a local perspective, this study encourages a critical reflection of the underlying assumptions and conceptualization of the green economy approach in Laos, and argues for policies and measures that consider a more holistic perspective of human wellbeing and the environment.
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| 3. |
- Bergquist, Ann-Kristin, 1972-, et al.
(författare)
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Understanding and Overcoming Roadblocks to Environmental Sustainability : Past Roads and Future Prospects
- 2019
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Ingår i: Business history review. - Boston : Cambridge University Press. - 0007-6805 .- 2044-768X. ; 93:1, s. 127-148
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Tidskriftsartikel (refereegranskat)abstract
- This article examines key barriers to business sustainability discussed at a multidisciplinary conference held at the Harvard Business School in 2018. Drawing on perspectives from both the historical and business literatures, speakers debated the historical success of and future opportunities for voluntary business actions to advance sustainability. Roadblocks include misaligned incentives, missing institutions, inertia of economic systems, and the concept of sustainability itself. Overcoming these roadblocks will require systematic interventions and alternative normative concepts.
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