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Giangiacomo Bravo

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10 records found

Institutional adaptation and transformation for climate resilience

Journal article (2023) - Amineh Ghorbani, Saba Siddiki, Giangiacomo Bravo

The credibility thesis tested through an agent-based model

Journal article (2021) - Amineh Ghorbani, Peter Ho, Giangiacomo Bravo
A key debate in the study on land, housing and natural resources revolves around the notion that general institutional forms (such as private, common, public, and likewise formal property rights) lead to a certain institutional performance (as may be expressed in terms of prices, transaction costs or sustainability). However, a modest, yet, growing stream in institutional analysis aims to move away from ‘merely describing the characteristics’ of institutions (i.e., form variables) to ‘performance or quality measures’ (i.e., function variables). Following this line of argument, the credibility thesis as put forward in this journal (Ho, 2014) postulates that the form of institutions is unrelated to their performance, and institutions are unintentional outcomes rather than designed artefacts. The primary goal of this research is to ascertain whether this dual prediction could be observed in a simulation model that is driven by agent behaviour and interaction, resulting in emerging institutions. We devise an empirically verified agent-based model within a classical thought experiment on a common property resource to validate the thesis’ predictions. First, our model confirms that different forms of institutions can have a similar performance. Second, we ascertain that successful institutions in difficult management situations can emerge (rather than being designed) that are beneficial for the sustainability of the common resource and the appropriators of that resource. ...

The impact of sanctions on the resilience of historical commons in Europe

Journal article (2021) - Tine De Moor, Mike Farjam, René van Weeren, Giangiacomo Bravo, Anders Forsman, Amineh Ghorbani, Molood Ale Ebrahim Dehkordi
In their studies of collective exploitation of common-pool resources, Ostrom and other scholars have stressed the importance of sanctioning as an essential method for preventing overuse and, eventually, the collapse of commons. However, most of the available evidence is based on data covering a relatively small period in history, and thus does not inform us about the evolution of rules, including sanctions, over time. In this article, we demonstrate, based on historical sources covering several centuries, that sanctioning was not always the preferred way of preventing or dealing with free-riding in institutions for collective action, but that the legal context is decisive to understand why commoners in some countries were using more sanctions than those in others to regulate commoners' behavior. Commoners that could self-govern their resources used fewer sanctions, and when they did, it was mainly to avoid overuse of their most vulnerable resources. Moreover, graduated sanctioning seems to be less important than suggested in Ostrom's famous Design Principles, and was reserved primarily for immediate threats to the commons' resources. We also show the importance of other types of rules, such as differentiated rules, which have hardly been taken into account in literature to date. ...
Conference paper (2021) - Molood Ale Ebrahim Dehkordi, Amineh Ghorbani, Paulien Herder, Mike Farjam, Anders Forsman, René van Weeren, Tine De Moor, Giangiacomo Bravo

Using ABM as a Complementary Tool to Support Theory Development in Historical Studies

Journal article (2021) - Molood Ale Ebrahim Dehkordi, Amineh Ghorbani, Giangiacomo Bravo, Mike Farjam, René van Weeren, Anders Forsman, Tine De Moor
Historical data are valuable resources for providing insights into general sociological patterns in the past. How-ever, these data often inform us at the macro-level of analysis but not about the role of individuals’ behaviours in the emergence of long-term patterns. Therefore, it is difficult to infer ‘how’ and ‘why’ certain patterns emerged in the past. Historians use various methods to draw hypotheses about the underlying reasons for emerging patterns and trends, but since the patterns are the results of hundreds if not thousands of years of human behaviour, these hypotheses can never be tested in reality. Our proposition is that simulation models and specifically, agent-based models (ABMs) can be used as complementary tools in historical studies to support hypothesis building. The approach that we propose and test in this paper is to design and configure models in such a way as to generate historical patterns, consequently aiming to find individual-level explanations for the emerging pattern. In this work, we use an existing, empirically validated, agent-based model of common pool resource management to test hypotheses formulated based on a historical dataset. We first investigate whether the model can replicate various patterns observed in the dataset, and second, whether it can contribute to a better understanding of the underlying mechanism that led to the observed empirical trends. We showcase how ABM can be used as a complementary tool to support theory development in historical studies. Finally, we provide some guidelines for using ABM as a tool to test historical hypotheses. ...
Journal article (2021) - Anders Forsman, Tine De Moor, René Van Weeren, Mike Farjam, Molood Ale Ebrahim Dehkordi, Amineh Ghorbani, Giangiacomo Bravo
Human societies and natural ecosystems are under threat by growing populations, overexploitation of natural resources and climate change. This calls for more sustainable utilization of resources based on past experiences and insights from many different disciplines. Interdisciplinary approaches to studies of historical commons have potential to identify drivers of change and keys to success in the past, and offer advice about the management and use of shared resources in contemporary and future systems. We address these issues by applying an ecological perspective to historical data on social-ecological systems. We perform comparisons and time series analyses for nine successful Dutch commons for which highresolution data on the regulatory activities and use of shared resources is available for on average 380 years (range 236 to 568) during the period 1300 to 1972. Within commons, institutional developments were oscillating, with periods of intense regulatory activity being separated by periods of low activity, and with the dynamics of regulations being largely independent across commons. Ecological theory posits that species that occupy similar niches should show correlated responses to environmental challenges; however, commons using more similar resources did not have more parallel or similar institutional developments. One notable exception was that sanctioning was more frequent in commons that directed more regulatory activities towards non-renewable subsoil resources, whereas there was no association between sanctioning and the use of renewable resources. This might indicate that commoners were aware of potential resource depletion and attempted to influence freeriding by actively trying to solve the underlying social dilemmas. Sanctioning regulations were more frequent during the first than during the second part of a common's life, indicating that while sanctioning might have been important for the establishment of commons it was not key to the long-term persistence of historical commons. ...
Journal article (2020) - Mike Farjam, Tine De Moor, René van Weeren, Anders Forsman, Molood Ale Ebrahim Dehkordi, Amineh Ghorbani, Giangiacomo Bravo
We present an analysis of regulatory activities in historical commons offering a unique picture of their long-term institutional dynamics. The analysis took into account almost 3,800 regulatory activities in eighteen European commons in two countries across seven centuries. Despite differences in time and space, we found a shared pattern where an initial, highly-dynamic institutional-definition phase was followed by a relatively long period of stability and a final burst of activities, possibly in an attempt to respond to new challenges. In addition, most of the initial regulatory activities focused on resource use, while towards the end other activities prevailed. Our approach allows for a better understanding of institutional dynamics and our findings also provide important insights about how to regulate the use of current natural resources. ...
Journal article (2020) - Anders Forsman, Tine De Moor, René van Weeren, Giangiacomo Bravo, Amineh Ghorbani, Molood Ale Ebrahim Dehkordi, Mike Farjam
Historical commons represent self-governed governance regimes that regulate the use and management of natural and man-made shared resources. Despite growing scientific interests, analyses of commons evolution and temporal dynamics are rare and drivers of change (birth, adaptation, dissolution) remain obscure. We apply an interdisciplinary approach and address these issues from an eco-evolutionary perspective. Analyses of > 400 Dutch commons over more than a millennium (between the 9th and the 20th century) uncovered that most commons originated between 1200 and 1700, and that there was a particularly high rate of evolution during 1300-1550, a pattern intermediate to gradualism and punctuated equilibrium in biological evolution. Dissolutions of commons were rare prior to 1800 and peaked around 1850, comparable to a mass extinction in biology. Temporal trends in number, spatial distribution, density, and dispersion of historical commons were distinctive and resembled developments seen at the levels of species and individuals in the growth of biological communities and populations, in that they showed signs of saturation determined by the abundance and distribution of resources. The spatiotemporal dynamics of commons also pointed to important roles of social, economic and political factors, such as new reclamations of resources and pressure on resources due to population growth. Despite internal and external pressures, the self-governing commons studied here were very successful, in the sense that they persisted for on average >350 years. There was a weak positive relationship between the use of multiple resources and the lifespan of commons, resembling associations between diversity and persistence seen in biological systems. It is argued that eco-evolutionary perspectives can further the understanding of the long-term dynamics of commons as institutions for collective action, vitalize future research, improve management of shared goods, and advise about sustainable utilization of finite resources. ...

An empirically-tested model

Journal article (2017) - Amineh Ghorbani, Giangiacomo Bravo, Ulrich Frey, Insa Theesfeld
A appropriate bottom-up rule system can support the sustainability of common-pool resources such as forests and fisheries. The process that leads to the developments of such institutional settings requires the considerations of multiple social, physical, and institutional factors over long time horizons. In this paper, we present the SONICOM model as a general exploratory model of CPR systems. The model can be configured to represent different CPR systems in order to explore what kind of institutional settings result in stable systems, i.e. situations where the resource and the appropriators are in a state of well-being. We use a large-N-dataset of CPR management institutions to validate the model. The results show numerous correlations between various parameters of the system such as rule compliance, social influence and resource growth rate which help explaining the process of institutional emergence as well as unveiling the conditions under which systems are stable. ...

A simple model of the emergence of institutions through collective action

Journal article (2016) - Amineh Ghorbani, Giangiacomo Bravo
In this paper we present an abstract replication of institutional emergence patterns observed in common pool resource (CPR) problems. We used the ADICO grammar of institutions as the basic structure to model both users’ strategies and institutions. Through an evolutionary process, users modify their behaviours and eventually establish a management institution for their CPR system, leading to significant benefits both for them and for the commons as a whole. We showed that, even with a high level of abstraction, by taking an evolutionary perspective and using the ADICO structure, we are able to observe common institutional patterns. We confirmed that, even within this simplified environment, institutions significantly contributed to the sustainable management of common-pool resource systems. ...