BackgroundIn this study, we analyze the association of social isolation in the first phase of the pandemic with perceived stress among residents of Poland and Italy with a look at how these populations adjust to and comply with implemented regulations, guidelines, and restrictions.Materials and MethodsInternet survey with Perceived Stress Scale (PSS-10) and questions regarding mobility patterns, attitude, and propensity to adjust toward the implemented measures and current health condition was made among Polish and Italian residents (Cronbach’s alpha 0.86 and 0.79, (...) respectively). The sample size was 7,108 (6,169 completed questionnaires in Poland and 939 in Italy).ResultsThe Polish group had a higher stress level than the Italian group (mean PSS-10 total score 22,14 vs 17,01, respectively;p< 0.01). There was a greater prevalence of chronic diseases among Polish respondents. Italian subjects expressed more concern about their health, as well as about their future employment. Italian subjects did not comply with suggested restrictions as much as Polish subjects and were less eager to restrain from their usual activities (social, physical, and religious), which were more often perceived as “most needed matters” in Italian than in Polish residents.ConclusionHigher activity level was found to be correlated with lower perceived stress, but the causality is unclear. Difference in adherence to restrictions between Polish and Italian residents suggests that introducing similar lockdown policies worldwide may not be as beneficial as expected. However, due to the applied method of convenience sampling and uneven study groups, one should be careful with generalizing these results. (shrink)

The first work to offer a comprehensive pragmatist anthropology focusing on sensibility, habits, and human experience as contingently yet irreversibly enlanguaged.

Biologists studying ecology and evolution use the term “population” in many different ways. Yet little philosophical analysis of the concept has been done, either by biologists or philosophers, in contrast to the voluminous literature on the concept of “species.” This is in spite of the fact that “population” is arguably a far more central concept in ecological and evolutionary studies than “species” is. The fact that such a central concept has been employed in so many different ways is potentially problematic (...) for the reason that inconsistent usages (especially when the usage has not been made explicit) might lead to false controversies in which disputants are simply talking past one another. However, the inconsistent usages are not the only, or even the most important reason to examine the concept. If any set of organisms is legitimately called a “population,” selection and drift processes become purely arbitrary, too. Moreover, key ecological variables, such as abundance and distribution, depend on a nonarbitrary way of identifying populations. I sketch the beginnings of a population concept, drawing inspiration from the Ghiselin-Hull individuality thesis, and show why some alternative approaches are nonstarters. (shrink)

This article extends property-owning democracy to the digital realm and introduces “data-owning democracy,” a new political economic regime characterized by the wide distribution of data as capital among citizens. Drawing on republican theory and acknowledging data's unique role in the digital economy, it proposes a two-tier model that combines different modes of data ownership and corresponding rights. The first layer of “data-owning democracy” is characterized by a digital public infrastructure that enables citizens to collectively generate data and have a say (...) in how their citizen data are used. In the second layer, individuals automatically receive machine-readable copies of their data whenever they are generated—a slightly more advanced form of the European Union's existing right to data portability (Art. 20). With its focus on empowerment, data-owning democracy is designed to be complementary to existing data protection regulations. It also illustrates how political theory more broadly, and republican theory specifically, can be instructive for specifying the normative components of a new political economy dealing with questions of empowerment and digital rights. (shrink)

The “land community” (or “biotic community”) that features centrally in Aldo Leopold’s Land Ethic has typically been equated with the concept of “ecosystem.” Moreover, some have challenged this central Leopoldean concept given the multitude of meanings of the term “ecosystem” and the changes the term has undergone since Leopold’s time (see, e.g., Shrader-Frechette 1996). Even one of Leopold’s primary defenders, J. Baird Callicott, asserts that there are difficulties in identifying the boundaries of ecosystems and suggests that we recognize that their (...) boundaries are determined by scientific questions ecologists pose (Callicott 2013). I argue that we need to rethink Leopold’s concept of land community in the following ways. First, we should recognize that Leopold’s views are not identical to those of his contemporaries (e.g., Clements, Elton), although they resemble those of some subsequent ecologists, including some of our contemporaries (e.g., O’Neill 2001, Post et al. 2007, Hastings and Gross 2012). Second, the land community concept does not map cleanly onto the concept of “ecosystem”; it also incorporates elements of the “community” concept in community ecology by emphasizing the interactions between organisms and not just the matter/energy flow of the ecosystem concept. Third, the boundary question can be illuminated by considering some of the recent literature on the nature of biological individuals (in particular, Odenbaugh 2007; Hamilton, Smith, and Haber 2009; Millstein 2009), focusing on concentrations of causal relations as determinative of the boundaries of the land community qua individual. There are challenges to be worked out, particularly when the interactions of community members do not map cleanly onto matter/energy flows, but I argue that these challenges can be resolved. The result is a defensible land community concept that is ontologically robust enough to be a locus of moral obligation while being consistent with contemporary ecological theory and practice. (shrink)

This article sets the stage for a genealogy of the postgenomic body. It starts with the current transformative views of epigenetics and microbiomics to offer a more pluralistic history in which the ethical problem of how to live with a permeable body – that is plasticity as a form of life – is pervasive in traditions pre-dating and coexisting with modern biomedicine (particularly humoralism in its several ramifications). To challenge universalizing narratives, I draw on genealogical method to illuminate the unequal (...) distribution of plasticity across gender and ethnic groups. Finally, after analysing postgenomics as a different thought-style to genomics, I outline some of its implications for notions of plasticity. I argue that postgenomic plasticity is neither a modernistic plasticity of instrumental control of the body nor a postmodernist celebration of endless potentialities. It is instead closer to an alter-modernistic view that disrupts clear boundaries between openness and determination, individual and community. (shrink)

I argue that the propensity interpretation of fitness, properly understood, not only solves the explanatory circularity problem and the mismatch problem, but can also withstand the Pandora’s box full of problems that have been thrown at it. Fitness is the propensity (i.e., probabilistic ability, based on heritable physical traits) for organisms or types of organisms to survive and reproduce in particular environments and in particular populations for a specified number of generations; if greater than one generation, “reproduction” includes descendants of (...) descendants. Fitness values can be described in terms of distributions of propensities to produce varying number of offspring and can be modeled for any number of generations using computer simulations, thus providing both predictive power and a means for comparing the fitness of different phenotypes. Fitness is a causal concept, most notably at the population level, where fitness differences are causally responsible for differences in reproductive success. Relative fitness is ultimately what matters for natural selection. (shrink)

Chapter 1st of the book. This chapter explores the fundamental ambiguity of the concept of plasticity – between openness and determination, change and stabilization of forms. This pluralism of meanings is used to unpack different instantiations of corporeal plasticity across various epochs, starting from ancient and early modern medicine, particularly humouralism. A genealogical approach displaces the notion that plasticity is a unitary phenomenon, coming in the abstract, and illuminates the unequal distribution of different forms of plasticities across social, gender, and (...) ethnic groups. Taking a longer view of the plastic body as a ubiquitous belief in traditions predating and coexisting with modern medicine will help contextualize the seeming radicalism of today’s turn to permeability and the exceptionalism of Western findings. By highlighting the complex biopolitical usages of plasticity in the past, the chapter warns against simplistic appropriations of the term in contemporary body/world configurations driven by findings in neuroscience, epigenetics and microbiomics. (shrink)

In this essay we take stock of the shortcomings, successes, and promises of ‘biopolitics' to understand and frame global health crises such as COVID-19. We claim that rather than thinking in terms of a special relationship between Western modernity and biopolitics, it is better to look at a longer and more global histories of populations’ politics of life and health to situate present and future responses to ecological crises. Normatively, we argue for an affirmative biopolitics, that at once de-securitizes our (...) approach to our biosocial condition and expands the politics of the human estate to other molar and molecular dimensions. (shrink)

Our understanding of body–world relations is caught in a curious contradiction. On one side, it is well established that many concepts that describe interaction with the outer world – ‘plasticity’ or ‘metabolism’- or external influences on the body - ‘environment’ or ‘milieu’ – appeared with the rise of modern science. On the other side, although premodern science lacked a unifying term for it, an anxious attentiveness to the power of ‘environmental factors’ in shaping physical and moral traits held sway in (...) nearly all medical systems before and alongside modern Europe. In this article, I build on a new historiography on the policing of bodies and environments in medieval times and at the urban scale to problematize Foucault’s claim about biopolitics as a modern phenomenon born in the European eighteenth-century. I look in particular at the collective usage of ancient medicine and manipulation of the milieu based on humoralist notions of corporeal permeability (Hippocrates, Galen, Ibn Sīnā) in the Islamicate and Latin Christendom between the 12th and the 15th century. This longer history has implications also for a richer genealogy of contemporary tropes of plasticity, permeability and environmental determinism beyond usual genealogies that take as a starting point the making of the modern body and EuroAmerican biomedicine. (shrink)

A history of colonization inflicts psychological, physical, and structural disadvantages that endure across generations. For an increasing number of Indigenous Australians, environmental epigenetics offers an important explanatory framework that links the social past with the biological present, providing a culturally relevant way of understanding the various intergenerational effects of historical trauma. In this paper, we critically examine the strategic uptake of environmental epigenetics by Indigenous researchers and policy advocates. We focus on the relationship between epigenetic processes and Indigenous views of (...) Country and health—views that locate health not in individual bodies but within relational contexts of Indigenous ontologies that embody interconnected environments of kin/animals/matter/bodies across time and space. This drawing together of Indigenous experience and epigenetic knowledge has strengthened calls for action including state-supported calls for financial reparations. We examine the consequences of this reimagining of disease responsibility in the context of “strategic biological essentialism,” a distinct form of biopolitics that, in this case, incorporates environmental determinism. We conclude that the shaping of the right to protection from biosocial injury is potentially empowering but also has the capacity to conceal forms of governance through claimants’ identification as “damaged,” thus furthering State justification of biopolitical intervention in Indigenous lives. (shrink)

In this paper I first offer a systematic outline of a series of conceptual novelties in the life-sciences that have favoured, over the last three decades, the emergence of a more social view of biology. I focus in particular on three areas of investigation: (1) technical changes in evolutionary literature that have provoked a rethinking of the possibility of altruism, morality and prosocial behaviours in evolution; (2) changes in neuroscience, from an understanding of the brain as an isolated data processor (...) to the ultrasocial and multiply connected social brain of contemporary neuroscience; and (3) changes in molecular biology, from the view of the gene as an autonomous master of development to the ‘reactive genome’ of the new emerging field of molecular epigenetics. In the second section I reflect on the possible implications for the social sciences of this novel biosocial terrain and argue that the postgenomic language of extended epigenetic inheritance and blurring of the nature/nurture boundaries will be as provocative for neo-Darwinism as it is for the social sciences as we have known them. Signs of a new biosocial language are emerging in several social-science disciplines and this may represent an exciting theoretical novelty for twenty-first social theory. (shrink)

The case for an unprecedented penetration of life mechanisms into the politics of Western modernity has been a cornerstone of 20th-century social theory. Working with and beyond Foucault, this article challenges established views about the history of biopower by focusing on ancient medical writings and practices of corporeal permeability. Through an analysis of three Roman institutions: a) bathing; b) urban architecture; and c) the military, it shows that technologies aimed at fostering and regulating life did exist in classical antiquity at (...) the population scale. The article highlights zones of indistinction between natural and political processes, zoē and bíos, that are not captured by a view of destructive incorporation of or over life by sovereign power. In conclusion, the article discusses the theoretical potential of this historical evidence for contemporary debates on ‘affirmative biopolitics’ and ‘environmental biopower’. (shrink)

The rise of molecular epigenetics over the last few years promises to bring the discourse about the sociality and susceptibility to environmental influences of the brain to an entirely new level. Epigenetics deals with molecular mechanisms such as gene expression, which may embed in the organism “memories” of social experiences and environmental exposures. These changes in gene expression may be transmitted across generations without changes in the DNA sequence. Epigenetics is the most advanced example of the new postgenomic and context-dependent (...) view of the gene that is making its way into contemporary biology. In my article I will use the current emergence of epigenetics and its link with neuroscience research as an example of the new, and in a way unprecedented sociality of contemporary biology. After a review of the most important developments of epigenetic research, and some of its links with neuroscience, in the second part I reflect on the novel challenges that epigenetics presents for the social sciences for a re-conceptualization of the link between the biological and the social in a postgenomic age. Although epigenetics remains a contested, hyped, and often uncritical terrain, I claim that especially when conceptualized in broader non-genecentric frameworks,. (shrink)

In this paper, I analyze the disruptive impact of Darwinian selectionism for the century-long tradition in which the environment had a direct causative role in shaping an organism’s traits. In the case of humans, the surrounding environment often determined not only the physical, but also the mental and moral features of individuals and whole populations. With its apparatus of indirect effects, random variations, and a much less harmonious view of nature and adaptation, Darwinian selectionism severed the deep imbrication of organism (...) and milieu posited by these traditional environmentalist models. This move had radical implications well beyond strictly biological debates. In my essay, I discuss the problematization of the moral idiom of environmentalism by William James and August Weismann who adopted a selectionist view of the development of mental faculties. These debates show the complex moral discourse associated with the environmentalist-selectionist dilemma. They also well illustrate how the moral reverberations of selectionism went well beyond the stereotyped associations with biological fatalism or passivity of the organism. Rereading them today may be helpful as a genealogical guide to the complex ethical quandaries unfolding in the current postgenomic scenario in which a revival of new environmentalist themes is taking place. (shrink)

Foucault’s argument that a major break occurred in the nature of power in the European Eighteenth century—an unprecedented socialization of medicine and concern for the health of bodies and populations, the birth of biopolitics—has become since the 1990s a dominant narrative among sociologists but is rarely if ever scrutinized in its premises. This article problematizes Foucault’s periodization about the politics of health and the way its story has been solidified into an uncritical account. Building on novel historiographic work, it challenges (...) the modernist bias of histories of biopolitics and public health and considers an earlier and more plural history of collective practices of health of which the story told by Foucault is just one important episode. Finally, it discusses the implications of this revised model for wider sociological debates on the link between modernity, health and the body. (shrink)

Recent studies demonstrating epigenetic and developmental sensitivity to early environments, as exemplified by fields like the Developmental Origins of Health and Disease (DOHaD) and environmental epigenetics, are bringing new data and models to bear on debates about race, genetics, and society. Here, we first survey the historical prominence of models of environmental determinism in early formulations of racial thinking to illustrate how notions of direct environmental effects on bodies have been used to naturalize racial hierarchy and inequalities in the past. (...) Next, we conduct a scoping review of postgenomic work in environmental epigenetics and DOHaD that looks at the role of race/ethnicity in human health (2000–2021). Although there is substantial heterogeneity in how race is conceptualized and interpreted across studies, we observe practices that may unwittingly encourage typological thinking, including: using DNA methylation as a novel marker of racial classification; neglect of variation and reversibility within supposedly homogenous racial groups; and a tendency to label and reify whole groups as pathologized or impaired. Even in the very different politico-economic and epistemic context of contemporary postgenomic science, these trends echo deeply held beliefs in Western thinking which claimed that different environments shape different bodies and then used this logic to argue for essential differences between Europeans and non-Europeans. We conclude with a series of suggestions on interpreting and reporting findings in these fields that we feel will help researchers harness this work to benefit disadvantaged groups while avoiding the inadvertent dissemination of new and old forms of stigma or prejudice. (shrink)

This book introduces Ethics Bowl, which is a new way to engage in discussions about complex ethical issues with young people and focuses on student involvement. The book, part of the Rowman & Littlefield series on precollege philosophy, is a valuable primer on all things Ethics Bowl. Composed of fourteen chapters written by a strong group of contributors, the volume describes the educational value of the Ethics Bowl, provides guidance for participants and organizers, and highlights a wide range of venues (...) for hosting Ethics Bowls outside their original home in high school, middle school, and intercollegiate competition. (shrink)

Current corporate systems risk generating inequality among workers, insofar as they concentrate only on economic results by favoring, through the incentive and award system, only what can be seen, produced, and measured. As such, these systems are unable to recognize workers’ agapic behaviors – similar to the ones considered in organizational citizenship behavior literature – that cannot be quantified, i.e. workers’ generosity, humanity, kindness, compassion, help for others and mercy. Although these types of behaviors may appear unproductive or irrational, they (...) create symbols of belonging to the company and social cohesion. This article claims that beyond focusing on reward systems, companies should recognize agapic behaviors to increase workers’ intrinsic motivation. These behavioral attitudes allow fraternal relationships -as conceived in the Civil Economy tradition- to arise within organizations; moreover, they contribute to advancing new managerial practical implications in the humanistic management field. (shrink)

Recent controversies surrounding Michel Foucault suggest tensions and unresolved issues in his unfinished work. Here we interrogate Foucault’s legacy in relation to his claim that the welfare-state is a secularization of the Christian pastorate. We challenge Foucault’s binary narrative of the Christian flock versus the Graeco-Roman citizen and expand the focus to other ‘technologies of power’ in medieval Islam. Rather than an outburst of governmentality in modernity, we suggest a transregional and longue durée history of which the Christian pastorate was (...) merely one facet. This non-binary framework indicates that Foucault’s claim of a ‘demonic’ fusion of sovereign and pastoral power in modern politics requires significant revisitation. Finally, we claim that Foucault’s much-discussed fascination with neoliberalism may have roots in this one-sided narrative regarding the birth of the welfare-state. (shrink)

Information and communication technologies , with their increasing and widespread utilization in daily life, may exert an important impact on brain performances. The development of their use for improving several cerebral processes, by abolishing the brain/machine interface, is envisaged and is subject to debate. The scientific research on brain implants and brain gene transfer aiming to restore central nervous system functions, altered by disease or trauma, may contribute to this debate. Indeed, the advances that are enabling non drug-mediated approaches for (...) direct interventions on the brain are raising the possibility not only of restoring neural functions for therapeutic purposes, but also of monitoring, controlling and ultimately modifying from the outside these functions for enhancement. This paper gives an overview of the state of the art of brain implants and brain gene transfer for neurological diseases with a particular emphasis on Parkinson’s disease and a forecast on their possible application for other conditions. In doing so, the authors, who are neuroscientists working in the field of gene transfer for neuropsychiatric diseases, aim to establish a scientifically, medically and technically realistic framework to open up discussion on relevant ethical issues in this domain. (shrink)

The capability approach developed by Amartya Sen focuses on the enhancement of people’s capabilities, i.e. their real freedom to choose a life course they have reason to value. Applying the CA to the organizational context, the focus of human resource management is transformed, shifting away from the needs of the organization to the freedoms of the individual. This shift happens also inside the so-called ‘liberated companies,’ firms with an organizational form that allows employees the complete freedom, along with the responsibility, (...) to take any actions they decide are best. In this paper we show the contribution of the capability approach for management and for organizational ethics by focusing on this innovative model of ‘liberated companies.’. (shrink)

Current corporate systems risk generating inequality among workers, insofar as they concentrate only on economic results by favoring, through the incentive and award system, only what can be seen, produced, and measured. As such, these systems are unable to recognize workers’ agapic behaviors – similar to the ones considered in organizational citizenship behavior literature – that cannot be quantified, i.e. workers’ generosity, humanity, kindness, compassion, help for others and mercy. Although these types of behaviors may appear unproductive or irrational, they (...) create symbols of belonging to the company and social cohesion. This article claims that beyond focusing on reward systems, companies should recognize agapic behaviors to increase workers’ intrinsic motivation. These behavioral attitudes allow fraternal relationships -as conceived in the Civil Economy tradition- to arise within organizations; moreover, they contribute to advancing new managerial practical implications in the humanistic management field. (shrink)

Current corporate systems risk generating inequality among workers, insofar as they concentrate only on economic results by favoring, through the incentive and award system, only what can be seen, produced, and measured. As such, these systems are unable to recognize workers’ agapic behaviors – similar to the ones considered in organizational citizenship behavior literature – that cannot be quantified, i.e. workers’ generosity, humanity, kindness, compassion, help for others and mercy. Although these types of behaviors may appear unproductive or irrational, they (...) create symbols of belonging to the company and social cohesion. This article claims that beyond focusing on reward systems, companies should recognize agapic behaviors to increase workers’ intrinsic motivation. These behavioral attitudes allow fraternal relationships -as conceived in the Civil Economy tradition- to arise within organizations; moreover, they contribute to advancing new managerial practical implications in the humanistic management field. (shrink)

Recent discussions in the philosophy of biology have brought into question some fundamental assumptions regarding evolutionary processes, natural selection in particular. Some authors argue that natural selection is nothing but a population-level, statistical consequence of lower-level events (Matthen and Ariew [2002]; Walsh et al. [2002]). On this view, natural selection itself does not involve forces. Other authors reject this purely statistical, population-level account for an individual-level, causal account of natural selection (Bouchard and Rosenberg [2004]). I argue that each of these (...) positions is right in one way, but wrong in another; natural selection indeed takes place at the level of populations, but it is a causal process nonetheless. (shrink)

The third edition of this popular reader reflects considerable changes. With over seventy readings representing a wide diversity of theorists, it offers a breadth of coverage not available in other collections. The framework for understanding theory as a set of conversations over time is maintained and deepened, with a focus on key transitional theorists who helped pave the way from classical to contemporary theory. New contextual and biographical materials surround the primary readings, and each chapter includes a study guide with (...) key terms, discussion questions, and innovative classroom exercises. The result is a fresh and expansive take on social theory that foregrounds a plurality of perspectives and defines contemporary trends in the field, while being both an accessible and manageable teaching tool. (shrink)

The role of the body in cognition is acknowledged across a variety of disciplines, even if the precise nature and scope of that contribution remain contentious. As a result, most philosophers working on embodiment—e.g. those in embodied cognition, enactivism, and ‘4e’ cognition—interact with the life sciences as part of their interdisciplinary agenda. Despite this, a detailed engagement with emerging findings in epigenetics and post-genomic biology has been missing from proponents of this embodied turn. Surveying this research provides an opportunity to (...) rethink the relationship between embodiment and genetics, and we argue that the balance of current epigenetic research favours the extension of an enactivist approach to mind and life, rather than the extended functionalist view of embodied cognition associated with Andy Clark and Mike Wheeler, which is more substrate neutral. (shrink)

A myth exists that Jews can embrace the cultural components of Judaism without appreciating the legal aspects of the Jewish tradition. This myth suggests that law and culture are independent of one another. In reality, however, much of Jewish culture has a basis in Jewish law. Similarly, Jewish law produces Jewish culture. Roberta Rosenthal Kwall develops and applies a cultural analysis paradigm to the Jewish tradition that departs from the understanding of Jewish law solely as the embodiment of Divine (...) command. (shrink)

Body as Sanctuary for Soul reminds us about "that primordial seed of memory" planted within, which once retrieved and nurtured becomes the inner intelligence of the soul. As Plato affirmed, we all move through "the river of forgetfulness" upon being born, and for some it can take a lifetime to retrieve what we have forgotten. Roberta Pughe teaches an embodied methodology to move this process along more quickly; to help call the soul home to live integrated within the container (...) of the body. There is a specific skill set required to understand conceptually exactly what is going on and to learn how to nurture this in daily life. Pughe draws from gestalt theory, shamanism, Platonic philosophy, and elemental breath work in a practical and easily accessible manner. Her audio tracks complement the text, providing a daily opportunity for experiential spiritual practice. Once you have applied the book's information, you begin to experience your soul's intelligence informing the daily activities of your life. Each enlightened soul seeks embodiment - simultaneously traversing both earth and sky realms - so that it can unveil its mythical knowledge in practical ways to create a life of greater purpose and fulfillment of destiny. (shrink)

This conversation between Laura Mulvey and Roberta Sassatelli offers a historical reconstruction of Mulvey’s work, from her famous essay ‘Visual Pleasure and Narrative Cinema’ to her most recent reflections on male gaze, film technology and visual culture. The conversation initially deals with the socio-cultural context in which the ‘Visual Pleasure...’ essay was produced by outlining a number of possible theoretical parallelisms with other scholars, from Foucault to Barthes to Goffman. Then, on the basis of Mulvey’s latest book, Death 24× (...) a Second, and of a variety of contemporary examples, the emphasis is on the relative shift in Mulvey’s work from gender to time and visual technology. Finally, the conversation focuses on the concept of ‘gendered scopic regime’ and the potential re-articulation of the male gaze through the technological re-direction and control of the visual. (shrink)

In recent years, a proliferation of books about empathy, cooperation and pro-social behaviours (Brooks, 2011a) has significantly influenced the discourse of the life-sciences and reversed consolidated views of nature as a place only for competition and aggression. In this article I describe the recent contribution of three disciplines – moral psychology (Jonathan Haidt), primatology (Frans de Waal) and the neuroscience of morality – to the present transformation of biology and evolution into direct sources of moral phenomena, a process here named (...) the ‘moralization of biology’. I conclude by addressing the ambivalent status of this constellation of authors, for whom today ‘morality comes naturally’: I explore both the attractiveness of their message, and the problematic epistemological assumptions of their research programmes in the light of new discoveries in developmental and molecular biology. (shrink)