Responding adequately to the behaviour of human and non-human animals in our environment has been crucial for our survival. This is also reflected in our exceptional capacity to detect and interpret biological motion signals. However, even though our emotions have specifically emerged as automatic adaptive responses to such vital stimuli, few studies investigated the influence of biological motion on emotional evaluations. Here, we test how the motion of animals affects emotional judgements by contrasting static animal images and videos. (...) We investigated this question (1) in non-fearful observers across many different animals, and (2) in observers afraid of particular animals across four types of animals, including the feared ones. In line with previous studies, we find an idiosyncratic pattern of evoked emotions across different types of animals. These emotions can be explained to different extents by regression models based on relevant predictor variables (e.g. familiarity, dangerousness). Additionally, our findings show a boosting effect of motion on emotional evaluations across all animals, with an additional increase in (negative) emotions for moving feared animals (except snakes). We discuss implications of our results for experimental and clinical research and applications, highlighting the importance of experiments with dynamic and ecologically valid stimuli. (shrink)

To solve the problems of factory farming and animal experimentation, what we need is not new philosophical knowledge but a systematic exploration of how to put what we know into practice. This book argues for combining pragmatism and vision, reason and emotions, and morality and politics to foster significantly better human-animal relations.

: Recent work in the area of ethics and animals suggests that it is philosophically legitimate to ascribe emotions to nonhuman animals. Furthermore, it is sometimes argued that emotionality is a morally relevant psychological state shared by humans and nonhumans. What is missing from the philosophical literature that makes reference to emotions in nonhuman animals is an attempt to clarify and defend some particular account of the nature of emotion, and the role that emotions play in a (...) characterization of human nature. I argue in this paper that some analyses of emotion are more credible than others. Because this is so, the thesis that humans and nonhumans share emotions may well be a more difficult case to make than has been recognized thus far. (shrink)

Recent work in the area of ethics and animals suggests that it is philosophically legitimate to ascribe emotions to nonhuman animals. Furthermore, it is sometimes argued that emotionality is a morally relevant psychological state shared by humans and nonhumans. What is missing from the philosophical literature that makes reference to emotions in nonhuman animals is an attempt to clarify and defend some particular account of the nature of emotion, and the role that emotions play in a characterization (...) of human nature. I argue in this paper that some analyses of emotion are more credible than others. Because this is so, the thesis that humans and nonhumans share emotions may well be a more difficult case to make than has been recognized thus far. (shrink)

Human-animal emotional relationships have a complicated interplay with public perceptions of the morality of animal use. Humans may build emotional relationships with companion species. These species are not usually intensively farmed in the United Kingdom, but they may be utilized during animal experimentation. From a relational ethical standpoint, the public may therefore perceive animal experimentation as being less acceptable than intensive farming. This study aimed to determine whether human-animal emotional relationships affect public attitudes regarding use (...) of animals in intensive farming and research. Responding to an online questionnaire, British citizens rated their agreement with 20 statements relating to their acceptance of intensive farming and animal experimentation, scientific research involving a given species, killing free-living animals, and consuming animals existing within companion and farming contexts. Positive correlations were found between public acceptance of intensive farming and animal experimentation, such that acceptance of animal experimentation corresponded with acceptance of intensive farming practices. This finding disproved our theory that the British public may perceive animal experimentation as less acceptable than intensive farming due to the use of companion species in scientific research. Public acceptance of animal experimentation also did not significantly differ between that involving companion or noncompanion species. However, respondents were more accepting of the consumption of a typical farmed animal raised for meat purposes than consuming an animal if it had been raised in a companion context or consuming a typical companion species raised in either a farmed or companion context. These findings illustrate that the human-animal relationship can influence public perceptions of the morality of animal use. (shrink)

Researchers of non-human animal emotions tend to defend some forms of anthropomorphism and seek ways to make it more critical, self-aware, and useful for scientific purposes. I propose that to achieve this goal, we need first to conduct a Kantian investigation into the deeper structure of anthropomorphism. I argue that we can distinguish at least three levels of anthropomorphising: a narrative level, a cognitive level and an in-between, metatheoretical level which is the deeper structure determining how we anthropomorphise. (...) Because the current debate tends to focus either on the narrative level or on the cognitive level, this paper concentrates on the metatheoretical level, discusses its role in emotion research, the possible errors it may cause, and how we can work on it, drawing on predictive processing-based theories of emotions and an evolutionary approach. The key to being critical in anthropomorphism is to be aware of the complexity of this whole structure, as well as to be able to challenge and put into question all and any of its elements. (shrink)

This paper deals with the evolutionary origin and the adaptive function of emotion. I discuss the view that emotions have evolved as functional adaptations in both humans and non-human animals in order to cope with adaptive challenges and to promote fitness. I argue that there is evolutionary continuity between humans and animals in emotions and emotional expressions, and discuss behavioural argument for this thesis, specifically, Darwin’s and Ekman’s research on similarities in how humans and animals express their basic (...) emotions. In addition to this argument, I provide neuroscientific evidence that supports the claim that basic emotions are evolutionary old and shared among humans and many other animals. Finally, I conclude that animal emotions can be considered the bases and roots of our emotions that connect us to other sentient beings. (shrink)

Comparison of human and animal emotions reveals a fuzzy yet discernible boundary. Their undeniable similarities are more aptly described as ur-emotions than as basic emotions. This article describes how the concept of ur-emotion can be useful to animal researchers as well as to social constructionists by making sense of emotional variation both across species and across cultures.

One of science's greatest intellects examines how people and animals display fear, anger, and pleasure. Darwin based this 1872 study on his personal observations, which anticipated later findings in neuroscience. Abounding in anecdotes and literary quotations, the book is illustrated with 21 figures and seven photographic plates. Its direct approach, accessible to professionals and amateurs alike, continues to inspire and inform modern research in psychology.

Could emotions be a uniquely human phenomenon? One prominent theory in emotion science, Lisa Feldman Barrett’s “Theory of Constructed Emotion” (TCE), suggests they might be. The source of the sceptical challenge is that TCE links emotions to abstract concepts tracking socio-normative expectations, and other animals are unlikely to have such concepts. Barrett’s own response to the sceptical challenge is to relativize emotion to the perspective of an interpreter, but this is unpromising. A more promising response may be to (...) amend the theory, dropping the commitment to the abstract nature of emotion concepts and allowing that, like olfactory concepts, they have disjunctive sensory groundings. Even if other animals were emotionless, this would not imply they lack morally significant interests. Unconceptualized valenced experiences are a sufficient basis for morally significant interests, and such experiences may occur even in the absence of discrete, constructed emotions. (shrink)

A defining characteristic of primary emotions is that they occur in wide variety of species. Secondary emotions are thought to be restricted to humans and other primates. We report evidence from two studies investigating claims of primary and secondary emotions in non-primate species. Study 1. We surveyed 907 owners about emotions that they had observed in their animal. Participants reported primary emotions more frequently than secondary emotions and self-conscious emotions more frequently than (...) self-conscious evaluative emotions. Jealousy was reported at very high levels (81% of dogs and 79% of horses), which was surprising as jealousy is generally defined as a secondary emotion. Study 2. Forty dog owners were interviewed about the contexts and behaviours that led them to claim their animal was jealous. There was coherence and consistency in the behavioural descriptions of jealousy. We claim that such reports provide evidence for the existence of secondary emotions in non-primate species as predicted by theorists such as Buck (Citation1999). (shrink)

Many philosophers have argued that prosthetic limbs are the subjects of some of the same rights as traditional body parts. This is a strong argument in favour of respecting the rights of users of prosthetics. I argue that all of the reasons to consider paradigm prosthetics the subjects of body-like rights apply to the relationship between some emotional support animals and their handlers. ESAs are integrated into the functioning of their handlers in ways that parallel the ways that paradigm prosthetics (...) are integrated into the functioning of their users. ESAs are also phenomenologically integrated into their handler’s lives in ways that parallel the phenomenological integration that prosthetic users experience. These parallels provide a strong reason to take the rights of ESA handlers much more seriously than we do now. I will highlight that the current treatment of ESA handlers presumes that they have no rights to ESAs at all. Even if ESAs are the subject of very minimal body-like rights, ESA handlers are having their rights violated. There are of course disanalogies between ESAs and paradigm prosthetics. Most notably, ESAs are alive and separate from their handlers. However, none of these disanalogies are relevant to the question of body-like rights. The differences between ESAs and paradigm prosthetics are in terms of what treatment is owed to them, not in terms of what rights their handlers and users should have. ESAs are not prosthetics, but they deserve some of the rights prosthetics do. (shrink)

My essay first takes me into the arena in which science, spirituality, and theology meet. I comment on the enterprise of science and how scientists could well benefit from reciprocal interactions with theologians and religious leaders. Next, I discuss the evolution of social morality and the ways in which various aspects of social play behavior relate to the notion of “behaving fairly.” The contributions of spiritual and religious perspectives are important in our coming to a fuller understanding of the evolution (...) of morality. I go on to discuss animal emotions, the concept of personhood, and how our special relationships with other animals, especially the companions with whom we share our homes, help us to define our place in nature, our humanness. It is when we take the life of another being in the ritual of compassionately euthanizing them (“putting them to sleep”) that who we are in the grand scheme of things comes to the fore. I end with a discussion of the importance of ethological studies, behavioral research in which a serious attempt is made to understand animals in their own worlds, inquiries in which it is asked, “What is it like to be another species?” Species other than nonhuman primates need to be studied. I plead for developing compassionate, heartfelt, and holistic science that allows for interdisciplinary talk about respect, grace, spirituality, religion, love, Earth, and God. (shrink)

According to the judgment theory of emotion, emotions necessarily involve evaluative judgments. Despite a number of attractions, this theory is almost universally held to be dead, for a very simple reason: it is overly intellectualistic. On behalf of the judgment theorist, I defend a simple strategy, namely, to claim that her view is restricted to a special class of emotions, a strategy that is rooted in a plausible distinction between two broad classes of emotion. It turns out that, (...) if the judgment theory is to be rejected, such rejection cannot be based on the charge that it overintellectualizes emotions. (shrink)

Taking up the body turn in sociology, this paper discusses scientific practices as embodied action from the perspective of Husserl’s phenomenological theory of the “Body”. Based on ethnographic data on a biology laboratory it will discuss the importance of the scientist’s Body for the performance of scientific activities. Successful researchers have to be skilled workers using their embodied knowledge for the process of tinkering towards the material transformation of their objects for data production. The researcher’s body then is an instrument (...) of measuring as well as a kind of archive of knowing. Their body becomes a disciplined instrument which has its own place and function inside the laboratory. Furthermore, the appresentational apperception of Bodies (Husserl) is being discussed as a basis for the emotional and ethical concerns towards laboratory-animals. Attitudes towards animals in the laboratory setting (as well as elsewhere) are highly emotional. Nevertheless, following the literature of the sociology of the body, those emotional reactions still follow certain cultural patterns which themselves can be understood as embodied ways of knowing “right” or “wrong”. Besides as an instrument, the scientist’s body can also be understood as a resource of emotional attachment towards animals. It is an instrument for performing transformation as well as one for caring. (shrink)

This article theorizes the politics of witnessing and grief in the context of the embodied experience of cows raised for dairy in the Pacific Northwestern United States. Bearing witness to the mundane features of dairy production and their impact on cows' physical and emotional worlds enables us to understand the violence of commodification and the political dimensions of witnessing the suffering of an Other. I argue that greater attention should be paid to the uneven hierarchies of power in the act (...) of bearing witness. Centering the animal as a subject of witnessing allows us to see with particular clarity the ethical ambiguities at work in witnessing while at the same time attending to the importance of witnessing-as-politics. My project here is to lay bare moments of emotional and physical turmoil not seen as such—the lives that are rendered ungrievable—and examine how we can and should respond to them. Thus, this article contributes to feminist conversations about witnessing, grief, and the political function of emotion. (shrink)

Darwin discusses why different muscles are brought into action under different emotions and how particular animals have adapted for association with man.

The position advanced in this paper is that the bedrock of emotional feelings is contained within the evolved emotional action apparatus of mammalian brains. This dual-aspect monism approach to brain–mind functions, which asserts that emotional feelings may reflect the neurodynamics of brain systems that generate instinctual emotional behaviors, saves us from various conceptual conundrums. In coarse form, primary process affective consciousness seems to be fundamentally an unconditional “gift of nature” rather than an acquired skill, even though those systems facilitate skill (...) acquisition via various felt reinforcements. Affective consciousness, being a comparatively intrinsic function of the brain, shared homologously by all mammalian species, should be the easiest variant of consciousness to study in animals. This is not to deny that some secondary processes cannot be evaluated in animals with sufficiently clever behavioral learning procedures, as with place-preference procedures and the analysis of changes in learned behaviors after one has induced re-valuation of incentives. Rather, the claim is that a direct neuroscientific study of primary process emotional/affective states is best achieved through the study of the intrinsic , albeit experientially refined, emotional action tendencies of other animals. In this view, core emotional feelings may reflect the neurodynamic attractor landscapes of a variety of extended trans-diencephalic, limbic emotional action systems—including SEEKING, FEAR, RAGE, LUST, CARE, PANIC, and PLAY. Through a study of these brain systems, the neural infrastructure of human and animal affective consciousness may be revealed. Emotional feelings are instantiated in large-scale neurodynamics that can be most effectively monitored via the ethological analysis of emotional action tendencies and the accompanying brain neurochemical/electrical changes. The intrinsic coherence of such emotional responses is demonstrated by the fact that they can be provoked by electrical and chemical stimulation of specific brain zones—effects that are affectively laden. For substantive progress in this emerging research arena, animal brain researchers need to discuss affective brain functions more openly. Secondary awareness processes, because of their more conditional, contextually situated nature, are more difficult to understand in any neuroscientific detail. In other words, the information-processing brain functions, critical for cognitive consciousness, are harder to study in other animals than the more homologous emotional/motivational affective state functions of the brain. (shrink)

Recent changes in the organizational culture of nonhuman animal sheltering, coupled with attitudes that are more progressive toward companion animals, have made shelters into resources rather than last resorts. Consequently, shelter workers need the "people skills" to communicate to a public that urgently needs accurate information about animal behavior and training. This poses a difficulty for workers drawn to working with animals but who find themselves working with people. Based on participant observation and informed by social psychology and (...) the sociology of emotions, this study articulates three primary dimensions of shelter workers' interactions with clients: Narrative Knowing, Emotion Management, and Deference. From the analysis of these dimensions, the paper then draws conclusions about the individual costs of shelter work and suggests practical steps that workers and animal care organizations could take to recognize and reduce these costs. (shrink)

Rationality is the constitutive ideal of the mental. Therefore it is important to understand the sort of rationality at issue here. It is often assumed that rationality just is instrumental rationality, but this leaves us with too thin a notion of desire: Desires centrally involve the notion of things mattering or being significant, for their objects must normally be worth pursuing to the subject. Such significance is simply unintelligible in terms of instrumental rationality. Consequently, understanding significance and its rational connections (...) to desire and action is essential to understanding rationality as a constitutive ideal. In particular, it is a crucial step in vindicating the idea of animal thought. ;I argue that significance, as well as desire, must be understood in part in terms of the emotions. Many prominent theories of emotions illegitimately conceive of significance as conceptually prior to the capacity for having emotions, in that things can be significant to a creature that does not have any emotions at all. In contrast, I argue first that a creature must have the capacity for emotions in order to be a subject of significance because to be significant is in part to be a suitable object of emotions generally. Second, emotions are essentially feelings not because they "involve" bodily sensations but because they are a distinctive kind of awareness of the significance of the world to the subject; particular occurrent emotions therefore presuppose that things are already significant to the subject. Consequently, emotions and significance form a conceptual package, with neither being prior to the other: Significance and the emotions emerge together in a pattern of instrumental and non-instrumental rationality that can be articulated in terms of their interconnected explanatory roles. ;Being a subject of beliefs and desires therefore requires more than simply rationally mediated goal-directedness, as Dennett believes. Rather, it requires being open, through the emotions, to the significance of the world and to the reasons that significance provides for action. This conclusion is shown to have important ramifications for our understanding both of a minimal sense of agency and of what it is to be a person. (shrink)

Sara Kolmes has argued that the human ‘handlers’ of emotional support animals should have the sorts of body-like rights to those animals that people with prosthetics have to their prosthetics. In support of this conclusion, she argues that ESAs both function and feel like prosthetics, and that the disanalogies between ESAs and prosthetics are irrelevant to whether humans can have body-like rights to their ESAs. In response, we argue that Ms Kolmes has failed to show that ESAs are body-like in (...) the ways that paradigmatic prostheses are and that, even if they were, these similarities would be outweighed by a crucial dissimilarity that she underestimates. (shrink)

This paper discusses the evolutionary origin and adaptive functions of emotions, in line with contemporary evolutionary psychology. Drawing upon Charles Darwin’s study of emotional expressions, it is argued that there is an evolutionary continuity among animals in emotional capacities, and that the differences between humans and animals are differences in degree and not in kind. The focus is on basic or primary emotions (joy, fear, sadness, anger), as it has been consistently shown that they are universal and shared (...) among many different species. Basis for this view is the neuroscientific research on brain mechanisms underlying the emotions, especially subcortical brain regions that are proven to be the evolutionary old loci of emotions, homologous across many species. These neuroscientific data provide convincing empirical evidence for the existence of emotional experiences in animals and the evolutionary continuity among species. (shrink)

This paper attempts to reconstruct the views of the Stoic Posidonius on the emotions, especially as presented by Galen’s On the Doctrines of Hippocrates and Plato. This is a well-studied area, and many views have been developed over the last few decades. It is also significant that the reliability of Galen’s account is openly at issue. Yet it is not clear that the interpretative possibilities have been fully demarcated. Here I develop Galen’s claim that Posidonius accepted a persistent, non-rational (...) aspect of the soul that he connects with the merely animal part of humans. The aim is to begin from this testimony in answering two questions: (1) How might the possession of a non-rational element of the soul operate alongside the hêgemonikon (leading-part of the soul) as a source of impulse for Posidonius. (2) How does this persistent animal aspect conform to the Stoic ontological classification found in their scala naturae? I shall argue in response to these that (a) Posidonius distinguished the merely cognitive aspects of the soul from those that are rational, and (b) that the hêgemonikon itself is not to be identified with what is rational. Accepting a persistent non-rational source of emotional impulses allows Posidonius a richer framework for explaining human affective responses and behaviours. I also briefly address Galen’s motivation for the account he offers. It is in view of Posidonius’ approach to Plato’s Timaeus that Galen’s discussion finds its most plausible interpretation. (shrink)

Our goal in this paper is to discuss the notion of animal knowledge in Judgment and Agency. Our approach has two stages. First, we offer a positive contribution, attempting to show that there is room for the introduction of emotions into an animal knowledge approach and into Sosa’s theory of competence. If we follow Sosa and conceive knowledge as a kind of action or successful performance, then emotions can contribute functionally for enhancing performance and are essential (...) for the sharing of knowledge among social agents. Second, we offer criticism of Sosa’s integrative project. It’s not clear that reflective knowledge always improves animal knowledge; rather, in order to avoid regress, Sosa should recognize that we can have perfectly safe animal knowledge. Finally, we argue that reflective knowledge has a more marginal role than Sosa seems at first sight to suggest. (shrink)

This paper is designed to help people rationally engage moral issues regarding the treatment of animals, specifically uses of animals in medical and psychological experimentation, basic research, drug development, education and training, consumer product testing and other areas.

In view of recent research can we continue to argue for a superiority over other animals that justifies dominating and exploiting them? This question, now “in the center of ethical discussion,” invites us to “radically reconsider the terms of ethical inquiry” (Rolston 1993, 382). Those terms now include the feelings biophilia and biophobia as well as compassion, sympathy, and empathy. Are we prepared to value not only reason but also emotions that connect us to other animals? If we are (...) to save ourselves and our planet, we need a more interdisciplinary model of ethics that includes “emotive” as well as analytic ethics. Derrida’s “L’Animal que donc je suis (ti suivre)” (1997) combines them, citing literature to demonstrate the role of feelings in situation-specific ethics. Though he does not use E.O Wilson’s terminology, Derrida suggests that what blocks biophilia is an apparently instinctive, superstitious fear of animals that has expanded into what we now call biophobia. Ultimately, Derrida focuses on a new experience of compassion that can bring about the political change needed to save our planet. (shrink)

Les êtres humains tracent les contours de leur vie individuelle, sociale et politique dans un réseau de langage. L’utilisation de la langue préside à tout ce qu’ils font, à la manière dont ils agissent et pensent. Charles Taylor explore ces dimensions anthropologiques du langage. Cet article traite de trois différents aspects de cette anthropologie fondée sur le langage et met à l’épreuve les considérations de Taylor à l’aide de trois questions distinctes touchant à la relation entre le langage et la (...) vie des êtres humains. Il s’agit d’abord de comprendre comment sa vision constitutive du langage peut être liée à sa critique de l’approche médiationnelle du langage. L’article aborde ensuite la relation entre le langage et les concepts et, enfin, la question des émotions. (shrink)

IntroductionAnimal Assisted Interventions are increasingly common in pediatric care settings as a means to promote the physical, mental, and emotional well-being of hospitalized children and adolescents.ObjectivesThe aim of this work was to review published studies implementing AAIs in hospital settings and to assess the effects of AAIs on the biobehavioral response to stress and pain, social behavior, quality of life and level of satisfaction with hospitalization in children and adolescents. Stress and burden, quality of life, mood and level of satisfaction (...) with hospitalization in parents/caregivers as well as stress and burden, perception of the work environment and job satisfaction in hospital staff were also reviewed.MethodsAll published studies reporting quantitative assessments were systematically searched using PubMed, Scopus, ProQuest and Web of Science databases in accordance with PRISMA guidelines. The aim was to identify studies examining the effects of AAIs on behavioral, psychological and physiological responses to stress in children and adolescents formally admitted to a hospital for a stay, as well as in those undergoing a visit for treatments or medical examinations.ResultsOf the 350 studies screened, 21 were eligible for inclusion. Most of them focused on stress, pain, and anxiety reduction in pediatric patients, and used both physiological parameters and behavioral and psychological observations/scales. All studies employed dogs. Results show the potential of AAIs to reduce anxiety and behavioral distress in pediatric patients while acting on physiological measures associated with arousal.ConclusionAlthough further, more rigorous studies are still needed, the findings of this review may have implications for clinical practices suggesting appropriate planning of AAIs by pediatric healthcare professionals.Systematic Review Registration[https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=178993], identifier [CRD42020178993]. (shrink)

Emotions have long been of interest to philosophers and have deep historical roots going back to the Ancients. They have also become one of the most exciting areas of current research in philosophy, the cognitive sciences, and beyond. -/- This book explains the philosophy of the emotions, structuring the investigation around seven fundamental questions: What are emotions? Are emotions natural kinds? Do animals have emotions? Are emotions epistemically valuable? Are emotions the foundation for (...) value and morality? Are emotions the basis for responsibility? Do emotions make us better people? -/- In the course of exploring these questions, the book also discusses cutting-edge empirical research on emotion, feminist approaches to emotions and their value, and methodological questions on how to theorize about the emotions. The book also contains in-depth discussions of specific emotions like compassion, disgust, anxiety, and curiosity. It also highlights emerging trends in emotion research. (shrink)

. I emphasize the importance of broadening behavioral, ecological, and conservation science into a more integrative, interdisciplinary, socially responsible, compassionate, spiritual, and holistic endeavor. I stress the significance of studies of animal behavior, especially ethological research concerned with animal emotions in which individuals are named and recognized for their own personalities, for helping us to learn not only about the nonhuman animal beings with whom we share Earth but also about who we are and our place (...) in nature. We are best understood in relationship with others. To this end I develop the notions of “minding animals” and “deep ethology.” Animals are sources of wisdom, a way of knowing. We are all citizens of Earth, members of a global community in which intimate reciprocal and beneficent peaceful relationships are mandatory. A world without cruelty and with boundless compassion, respect, grace, humility, spirituality, and love would be a better world in which to live. We have compelling responsibilities for making Earth a better and more peaceful habitat for all beings. It is essential that we do better than our ancestors. We must reflect and step lightly as we “redecorate” nature. Time is not on our side. I plead for the development of heartfelt and holistic science that allows for joy and play. Science need not be suspicious of things it cannot fully understand. We must not avert our eyes or other senses from the eyes and voices of other beings who urgently need our uncompromising and unconditional aid and love. We can do much more than we have done for animals and the Earth. (shrink)

The goal of this article is to bring together two fields of research — animal sentience research and animal welfare science — with the aim of advancing our understanding of animal emotions, especially their subjectively experienced or 'felt' component (feelings). While these two research areas share a common interest in animal feelings, they have had surprisingly little interaction. In this paper, we make a call for the integration of these fields and outline some of the (...) ways in which work done in each of these areas can inform and benefit the other, such as strengthening the theoretical and conceptual bases of both fields, and sharing methods used by each, advocating further future collaboration for the benefit of both disciplines. (shrink)