Legal arrangements rest on behavioural, cognitive, social, and other assumptions regarding their role and function in society and the legal system. The identification and subsequent evaluation of these assumptions is an important task for legal scholarship. In this article, we focus on the identification and categorisation of these assumptions, providing conceptual distinctions and methodological guidance. We distinguish between assumptions about the value(s), norm(s), or interest(s) underlying a legal arrangement, which can be legal or non-legal, and assumptions about the relationship between the legal arrangement and its underlying value(s), norm(s), or interest(s), which can be logical, causal, or contributory. Regarding the identification, we consider explicit references and inference to the best explanation and theory-driven evaluations as possible methods. Inference to the best explanation, we posit, functions as a manner of reconstructing the theory that the person(s) creating a legal arrangement had in mind regarding the place and function of that legal arrangement in society. Given this, we offer a step-by-step approach to reconstructing this theory in use, drawing from theory-driven evaluations and its sources in the social sciences. These distinctions and guidelines can contribute to understanding the context and untangling the complexities involved in identifying the assumptions that underlie legal arrangements.

Many doctrinal legal research questions require making use of other academic disciplines or perspectives. This article explains the relevance of legal philosophy for doctrinal research projects. Often legal research questions have conceptual or evaluative dimensions that presuppose philosophical understanding. For research on the concept of democracy, the function of constitutional rights, or the possible introduction of a referendum in the Netherlands, questions of a philosophical nature need to be answered. Legal philosophy can supplement and enrich doctrinal research in various ways. In this article, we present seven purposes that legal philosophy may serve in the context of a doctrinal research project: conceptual clarification, exposition and reconstruction of fundamental normative principles and values, theory building, providing creative perspectives, structural critiques, evaluation, and recommendations. For each objective, we illustrate how to use relevant philosophical methods. Thus, this article complements our earlier publication ‘Legal Philosophy as an Enrichment of Doctrinal Research – Part I: Introducing Three Philosophical Methods’.¹x http://www.lawandmethod.nl/tijdschrift/lawandmethod/2020/01/lawandmethod-D-19-00006.

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• * This text has been presented to classes at the University of Zagreb, Queen Mary University of London and Erasmus School of Law, Rotterdam; we profited from the feedback of our students. We also want to thank Irma Bluijs, Machteld Geuskens, Tamar de Waal and the reviewers for their helpful comments on previous versions of this article, and Jacqueline Brand and Robert Poll for providing research assistance.

• 1 http://www.lawandmethod.nl/tijdschrift/lawandmethod/2020/01/lawandmethod-D-19-00006.

This article discusses the key methodological shortcomings of experimental regulations and regulatory sandboxes. I argue that the poor design and implementation of these experimental legal regimes have both methodological and legal implications. The deficient design of experimental regulations and regulatory sandboxes can have three adverse effects: First, the internal validity of experimental legal regimes is limited because it is unclear whether the verified results are the direct result of the experimental intervention or other circumstances. The limited external validity of experimental legal regimes impedes the generalizability of the experiment. Second, experimental legal regimes that are not scientifically sound make a limited contribution to the advancement of evidence-based lawmaking and the rationalization of regulation. Third, methodological deficiencies may result in the violation of legal principles which require that experimental regulations follow objective, transparent, and predictable standards. I contribute to existing comparative public law and law and methods literature with an interdisciplinary framework which can help improve the design of experimental regulations and regulatory sandboxes. I draw on social science literature on the methods of field experiments to offer novel methodological insights for a more transparent and objective design of experimental regulations and regulatory sandboxes.

In deze bijdrage bespreken de auteurs inhoudelijke en didactische aanknopingspunten voor de integratie van professionele ethiek in de academische juridische opleiding. Dat gaat wat de auteurs betreft verder dan (enkel) het leren van gedragsregels, maar betreft ook de (kritisch-)ethische reflectie (op de professionele rol) van de jurist en ethische oordeelsvorming. Aanknopingspunten uit rechtstheoretische en onderwijskundige literatuur vragen om een curriculum brede, stapsgewijze, inbedding met passende toetsing. Dit onderwijs dient idealiter een combinatie te zijn van afzonderlijke meta-juridische vakken over recht en ethiek, positiefrechtelijke vakken die ethische elementen bevatten, klinische training en specifieke vakken over beroeps- of professionele ethiek. In dit artikel bespreken de auteurs diverse methoden die kunnen worden gebruikt om het onderwijs vorm te geven en illustreren dit met enkele voorbeelden uit het Utrechts universitair juridisch onderwijs. Actieve participatie, reflectie en – idealiter – eigen ervaringen zijn daarbij van groot belang. Een aantal modellen uit niet-juridische disciplines kan behulpzaam zijn bij het bieden van structuur voor ethische reflectie, voor zover het morele sensitiviteit en morele oordeelsvorming stimuleert. Verscheidene toetsingselementen op het terrein van de ethiek zijn door het curriculum heen nodig. Leeractiviteiten en toetsing kunnen worden opgebouwd in het curriculum van kennis en begrip, naar competenties ten aanzien van ethische dilemma’s en moreel oordelen.

Thought experiments have been widely used in virtually all sciences and humanities. Law is no exception. We can find countless instances of such experiments in both the legal practice and the legal theory. However, this method has hardly been studied by legal scholars, which contrasts with the vast literature devoted to it in other fields of knowledge. This article analyses the role that some thought experiments – those where an imaginary legal change is made, and its social effects are observed – may play in law. In particular, we show why these empirical legal thought experiments might be useful for the practice and theory of law, the main principles for conducting them and how the law deals with them.

Classic pragmatists like John Dewey entertained an encompassing notion of science. This pragmatic belief in the continuities between a scientific, ethical and cultural understanding of the world went into decline in the middle of the 20^th century. To many mid-century American and English philosophers it suggested a simplistic faith that philosophy and science could address substantive questions about values, ethics and aesthetics in a rigorous way. This critique of classic pragmatism has lost some of its force in the last few decades with the rise of neo-pragmatism, but it still has a hold over disciplines like economics and law. In this article I argue that this criticism of pragmatism is rooted in a narrow conception of what science entails and what philosophy should encompass. I primarily focus on one facet: John Dewey’s work on art and aesthetics. I explain why grappling with the world aesthetically, according to Dewey, is closely related to dealing with it scientifically, for instance, through the poetic and aesthetic development of metaphors and concepts to come to terms with reality. This makes his theory of art relevant, I argue, not only to studying and understanding law, but also to teaching law.

In this article, we discuss a particular form of interdisciplinary legal research. We focus on a discipline that may be fruitfully combined with doctrinal research, namely philosophy. The aim of this article is to give an account of the methods of philosophy that are most relevant and useful for doctrinal legal scholars. Our focus is therefore mostly on legal philosophy and the philosophical subdisciplines closely related to it, such as political philosophy and ethics. We characterize legal philosophy in three complementary ways: as an activity, as insights, and as theories. We then discuss three methods of legal philosophy: argumentation analysis and construction, author analysis and reflective equilibrium. In the practice of research these three methods are usually combined, as we will show with various examples.

There is a pressing need to develop a research methodology for studying judicial opinions that goes beyond both dogmatic analyzes and the established positions developed within philosophy of law and legal theory (e.g. the hermeneutic and argumentative approaches). One possible way is to adopt or modify methodologies developed within empirically oriented social sciences. Most social science textbooks devoted to methodology of empirical research deal with case studies. So far, this research framework developed within the social sciences has not been applied directly to judicial opinions, though they have been used for some empirical legal research studies. Even et first sight, case study research would appear to have potential for use with judicial opinions. The aim of the paper is to answer the question, how and to what extent can case study methodology developed within the social sciences be fruitfully used to examine judicial opinions? The general answer is undoubtedly positive (case studies can bring new, non-trivial threads to the research methodology on judicial opinions), though with many serious and far-reaching reservations.

This article looks at how normative questions, i.e. ‘what should the law be?‘, are approached in modern labour law scholarship. A distinction is made between internal and external normative frameworks for analysis, whereby internal frameworks are made up of principles, values or standards that are part of the law and the external frameworks are made up of theories outside of law. As a functional legal field, labour law can also benefit to a great deal from empirical research. However, the article argues that empirical facts by themselves have a limited normative value and that we need a normative framework in order to answer normative and evaluative questions. Therefore, the aim of the article is to review, clarify and evaluate the internal normative framework of labour law.

The basics of how to conduct participant observation are not taught in law schools. This is striking because this methodology has become a common feature of qualitative research and could be very useful in sociolegal research. For those interested in studying ‘law in practice’ instead of ‘law in the books’, qualitative research methods like participant observation are inevitable. However, participant observation is, at best, secondary in the literature on qualitative research in the sociolegal discipline, while there is no guidance on how to conduct this technique whatsoever.Therefore, this article is written with two audiences in mind: It should serve as a useful reference and guide for those who teach qualitative research methods in legal education and who are looking to enhance their knowledge and skills concerning participant observation; it is also meant to serve as a basic primer for the beginning sociolegal researcher who is about to become a participating observer for the first time.

This article builds upon the work of James Boyd White as well as on Shelley’s ‘A defence of Poetry’ (1840) and reports upon an experiment in which students use poetry as a means to understand philosophical texts. The experiment had a double goal: first, I sought to challenge students in reading a philosophical text differently with an aim to better understand the text. The second goal was to challenge students to think about the text differently, more critically and analyse its relevance for the contemporary world. In the end, using imagination, is the claim, contributes to students finding their own ‘voice’.

Different legal rules can lead to the same observable outcome, making it difficult to identify the most influential rule. This article addresses this gap by focusing on how competing explanatory theories derived from a doctrinal analysis can be assessed using a methodology called process-tracing. One of process-tracing’s main uses is to link explanatory theories to empirical evidence, permitting an assessment of causal mechanisms’ practical impact in comparison to each other. This article demonstrates the potential and practical implementation of process-tracing in the context of empirical legal research. In addition to the core characteristics of process-tracing, the paper clarifies when process-tracing can add to a doctrinal analysis and the requirements which have to be met. Furthermore, the process of linking doctrinal work with empirical evidence relying on process-tracing is shown, using the example of copyright ownership in the broadcasting sector. As a result, this paper demonstrates the added value of a process-tracing analysis carried out in addition to doctrinal work, in particular the insights into industry practice it generates.

This paper starts by reviewing empirical research that threatens law and economics’ initial success. This research has demonstrated that the functioning of the law cannot be well understood based on the assumption of the rational actor and that policies which are based on this assumption are likely to be flawed. Subsequently, three responses to this criticism are discussed. Whereas the first response denounces this criticism by maintaining that the limitations attributed to the rational actor can easily be incorporated in rational choice theory, the second response welcomes the criticism as an opportunity to come up with an integrative theory of law and behavior. The third response also takes the criticism seriously but replaces the aspiration to come up with such an integrative theory by a context-sensitive approach. It will be argued that the first two responses fall short while the third response offers a promising way to go forward.

Legal doctrinal scholarship engages with the problems of legal practice: it systematizes, comments on, evaluates and debates what goes on in law. These activities do not occur in a vacuum: they are embedded in scholarly traditions and theories. This paper discusses the role of the theoretical frameworks used in legal research and has two related aims. First, it aims to provide some practical conceptualizations and guidelines regarding theoretical and normative frameworks that are useful to understand and conduct legal research. Second, it aims to investigate the relationships between different kinds of normative frameworks and their relationship to empirical work. In the second part, an argument is made for a pragmatist understanding of the interplay between normative theorizing and empirical study. How do these work together in judgments about the state of the law?

This paper discusses three approaches that can be helpful in the area of comparative rights jurisprudence, oriented in reference to three different kinds of studies that are possible in that area. To a large extent the methods for a comparative legal research depend on the research question and the goal of the researcher. First, a comparative law study may focus on the sociocultural context that led to the elaboration of differences or similarities in the protection of rights. Second, a comparative law approach can be a normative enterprise. It can focus on engaging in a philosophical analysis enlightened by the differences or similarities in the regulation of rights, in order to propose concrete solutions for the regulation of a right. Third, a comparative law approach can combine both elements of the two previously mentioned approaches. The paper discusses the challenges that the researcher faces in her attempt to use these methodologies and how these challenges can be overcome. The law as a normative discipline has its own constraints of justifiability. If what motivates a comparative law study is the search for principles of justice the researcher needs to persuade that her methodological approach serves her aim.

It is often claimed in the media and in political and academic debates that more law nurtures more research, which in turn should generate more information. However, the question researchers are left with is: What does this mean for comparative law and its methods? This paper takes the context of European consumer sales law as an example of the web of rules applicable at both European and national level. In this context, the main idea behind this article is that looking at law and research as data to be built upon and used in further analysis can revolutionise the way in which legal research is understood. This is because current research methods in European consumer sales law fall short of systematically analysing the essential weaknesses of the current regulation system. In this contribution, I argue that the volume of regulation in European consumer law is large enough for it to be considered Big Data and analysed in a way that can harness its potential in this respect. I exemplify this claim with a case-study consisting in the setting up of a Convergence Index that maps the converging effect of harmonizing policies adopted by the European legislator in the field of

The nexus between religion and law is an important subject of comparative law. This paper, however, finds that the majority of comparative theorists rely on the immanent frame; that legal legitimacy can and should be separated from any objective truth or moral norm. But the fact of the matter is many constitutional systems were founded based on a complicated mixture between the transcendent and immanent frame. Whereas in the immanent frame, human actions are considered self-constituting, in the transcendent frame, human actions were judged in light of their correspondence to higher, divine laws and purposes.
This article argues that it is not sufficient for comparative theorists to offer a perspective from the immanent frame. Comparative theorists in law and religion should understand at least basic religious doctrines and know how to systematize those doctrines. In other words, comparative theorist of law and religion should work within the transcendent frame. By using a transcendent frame, comparative theorists will be able to excavate the underlying structure of religion, and so they will understand better how theological ideas influence law. Furthermore, this paper will also present a thought experiment in applying the transcendent frame in comparative constitutional studies.

Comparative methodology is an important and a widely used method in the legal literature. This method is important inter alia to search for alternative national rules and acquire a deeper understanding of a country’s law. According to a survey of over 500 Dutch legal scholars, 61 per cent conducts comparative research (in some form). However, the methodological application of comparative research generally leaves much to be desired. This is particularly true when it comes to case selection. This applies in particular to conceptual and dogmatic research questions, possibly also allowing causal explanations for differences between countries. This article suggests that the use of an interdisciplinary research design could be helpful, and Hofstede’s cultural-psychological dimensions can offer a solution to improve the methodology of selection criteria.