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.

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.

In the last few decades, we have witnessed the renaissance of Comparative Constitutional law as field of research. Despite such a flourishing, the methodological foundations and the ultimate ratio of Constitutional comparative law are still debated among scholars. This article starts from the definition of comparative constitutional law given by one of the most prominent comparative constitutional law scholars in Italy, prof. Bognetti, who defined comparative constitutional law as the main joining ring between the historical knowledge of the modern law and the history of the humankind in general and of its various civil realizations. Comparative constitutional law is in other words a kind of mirror of the “competing vision of who we are and who we wish to be as a political community” (Hirschl), reflecting the structural tension between universalism and particularism, globalization and tradition.
The article aims at addressing the main contemporary methodological challenges faced by the studies of the field. The article argues that contemporary comparative constitutional studies should address these challenges integrating the classical “horizontal” comparative method with a vertical one - regarding the international and supranational influences on constitutional settings - and fostering an interdisciplinary approach, taking into account the perspective of the social sciences.

The article discusses the contribution of comparative law to the study of federalism and decentralisation. In doing so, it stresses the relevance of the notion of federalising process, as elaborated by Carl J. Friedrich.

The purpose of this article is to investigate whether the notion of an interest should be taken more seriously than the notion of a right. It will be argued that it should; and not only because it can be just as amenable to the institutional taxonomical structure often said to be at the basis of rights thinking in law but also because the notion of an interest has a more epistemologically convincing explanatory power with respect to reasoning in law and its relation to social facts. The article equally aims to highlight some of the important existing work on the notion of an interest in law.

By conducting methodological assessments, legal researchers decide which lines of inquiry are worth pursuing. Two aspects of such assessments are highlighted in this article. The first aspect is to construct promising lines of inquiry. The second aspect is to clarify provisionally the potential of various promising lines of inquiry. Clarifying and calibrating such potential through discourse with fellow researchers are essential. Increased awareness of how legal researchers decide which lines of inquiry are worth pursuing is vital to contemporary discourse about legal methodology.

This article examines the main assumptions and theoretical underpinnings of case study method in legal studies. It considers the importance of research design, including the crucial roles of the academic literature review, the research question and the use of rival theories to develop hypotheses and the practice of identifying the observable implications of those hypotheses. It considers the selection of data sources and modes of analysis to allow for valid analytical inferences to be drawn in respect of them. In doing so it considers, in brief, the importance of case study selection and variations such as single or multi case approaches. Finally it provides thoughts about the strengths and weaknesses associated with undertaking socio-legal and comparative legal research via a case study method, addressing frequent stumbling blocks encountered by legal researchers, as well as ways to militate them. It is written with those new to the method in mind.

Sensitive interviews involve emotionally difficult topics which require participants to face issues that are deeply personal and possibly distressing. This paper draws together reflections concerning how researchers manage the challenges of conducting sensitive interviews, including the author’s own reflections concerning interviewing clinical negligence claimants. First, it examines the ethical guidelines that regulate sensitive research, and the challenges of obtaining informed consent and maintaining confidentiality. Ethical guidelines, however, provide limited assistance for ensuring the emotional care of research participants, and we also consider challenges that are not usually formally regulated. These include preparing for the interview, and then ensuring the emotional care of participants both during and after the interview itself. Sensitive research also raises deeper ethical issues concerning the negotiation of relations between researcher and participant, especially when this relationship is unequal. Finally, while previous research has generally focused on the need to take emotional care of research participants, less attention has been given to the emotional needs of researchers. It is argued that support systems for researchers are too often ad hoc, and that providing support is often not a priority of granting bodies, grant holders or supervisors, and that formal systems need to be put in place.

In this article I argue that the major issue in taxonomies of interdisciplinary research is the problem of authority. In a project on the needs of Aboriginal Australians in inheritance, involving interdisciplinary research using law (in both common law and customary law form) and anthropology, issues of translateability and truth/validity arose. Issues for the Aboriginal people included problems of identifying the correct kin, dealing with the body, and protecting customary law information and secrecy, all matters which the customary law could handle but which were not recognised by Australian common law. Because the characterization of these matters in law is often characterized as a problem of authority the article explores the various different ways forms of authority in law and anthropology exist and how they might clash. Because the anthropology concerned was about Aboriginal Customary Law there seemed to be a double problem of authority which needed to be resolved in order to ensure that the connections between the disciplines were clear and the inheritance issues could be resolved.