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Articles 301 - 330 of 454
Full-Text Articles in Animal Sciences
What If All Animals Are Sentient?, Arthur S. Reber
What If All Animals Are Sentient?, Arthur S. Reber
Animal Sentience
Birch develops a useful framework for determining when the Animal Sentience Precautionary Principle (ASPP) should be invoked. He rightly notes that there is a lack of agreement among social scientists, ethicists, and legislators even about whether the precautionary principle is useful, let alone when and how it should be implemented. His proposal is to establish a kind of cognitive threshold, and only when an animal shows a sufficient level of sentience would the ASPP be appropriate. From the point of view of the Cellular Basis of Consciousness model (Reber, 2016), all animals are sentient. If correct, the problems Birch identifies …
Of Cortex And Consciousness: “Phenomenal,” “Access,” Or Otherwise, Scott A. Husband
Of Cortex And Consciousness: “Phenomenal,” “Access,” Or Otherwise, Scott A. Husband
Animal Sentience
From the perspective of a comparative neuroanatomist studying the avian pallium, Woodruff’s (2017) claims about the behavioral and electrophysiological evidence for teleost sentience blur the lines between phenomenal and access consciousness (Block, 1995). I discuss the bias that complex cognition can only arise in the cortical layering typical of the mammalian pallium and conclude that Woodruff makes a good case that the tecto-pallial connections in teleosts are sufficiently complex to support something like sentience.
Animal Models, Agendas And Sentience, Thomas Creson
Animal Models, Agendas And Sentience, Thomas Creson
Animal Sentience
Woodruff’s target article on teleost consciousness is a well-organized logical argument for considering the fish as a sentient being. This becomes more important for animal ethical discussion as the fish becomes a more important and legitimate animal model for investigating animal states and traits associated with higher levels of behavior such as learning and memory.
Fish Sentience: A Hypothesis Worth Pursuing, José E. Burgos
Fish Sentience: A Hypothesis Worth Pursuing, José E. Burgos
Animal Sentience
Woodruff’s case for fish sentience is intriguing. Though far from ready for final acceptance, it is worth pursuing. The case is philosophically uncontroversial under functionalism and reductive materialism. It is also highly heuristic, as it raises interesting issues for further investigation, such as the neural causation of behavior, the role of Mauthner cells in conditioned avoidance, and whether operant conditioning is constitutive of fish sentience.
Can Unconscious Brain Processes Indicate Sentience?, Vincent Taschereau-Dumouchel, Piercesare Grimaldi, Hakwan Lau
Can Unconscious Brain Processes Indicate Sentience?, Vincent Taschereau-Dumouchel, Piercesare Grimaldi, Hakwan Lau
Animal Sentience
We disagree with Woodruff that we have good neurobiological reasons to think fishes are sentient, because mechanisms for consciousness are controversial even in humans. To the extent that there are consensuses in that literature, they do not support Woodruff's claims.
Canine Emotions As Seen Through Human Social Cognition, Miiamaaria V. Kujala
Canine Emotions As Seen Through Human Social Cognition, Miiamaaria V. Kujala
Animal Sentience
It is not possible to demonstrate that dogs (Canis familiaris) feel emotions, but the same is true for all other species, including our own. The issue must therefore be approached indirectly, using premises similar to those used with humans. Recent methodological advances in canine research reveal what dogs experience and what they derive from the emotions perceptible in others. Dogs attend to social cues, they respond appropriately to the valence of human and dog facial expressions and vocalizations of emotion, and their limbic reward regions respond to the odor of their caretakers. They behave differently according to the …
Communicating Canine And Human Emotions, Juliane Bräuer, Karine Silva, Stefan R. Schweinberger
Communicating Canine And Human Emotions, Juliane Bräuer, Karine Silva, Stefan R. Schweinberger
Animal Sentience
Kujala (2017) reviews a topic of major relevance for the understanding of the special dog-human relationship: canine emotions (as seen through human social cognition). This commentary draws attention to the communication of emotions within such a particular social context. It highlights challenges that need to be tackled to further advance research on emotional communication, and it calls for new avenues of research. Efforts to disentangle emotional processes from cognitive functioning might be necessary to better comprehend how they contribute, alone and/or in combination, to the communication of emotions. Also, new research methods need to be developed to account for the …
Inferring Emotion Without Language: Comparing Canines And Prelinguistic Infants, Stefanie Hoehl
Inferring Emotion Without Language: Comparing Canines And Prelinguistic Infants, Stefanie Hoehl
Animal Sentience
Research on canine emotions has to deal with challenges quite similar to psychological research on social and emotional development in human infants. In both cases, verbal reports are unattainable, and behavioral and physiological methods have to be adjusted to the specific population. I will argue that both regarding empirical approaches and conceptual work, advances in research on social-cognitive development in human infants can inform the study of canine emotions.
What Can Vigilance Tell Us About Fear?, Guy Beauchamp
What Can Vigilance Tell Us About Fear?, Guy Beauchamp
Animal Sentience
Animal vigilance is concerned with the monitoring of potential threats caused by predators and conspecifics. Researchers have argued that threats are part of a landscape of fear tracking the level of risk posed by predators and conspecifics. Vigilance, which is expected to vary with the level of risk, could thus be used as a measure of fear. Here, I explore the relationship between vigilance and fear caused by predators and conspecifics. The joint occurrence of vigilance and other physiological responses to fear, such as increased heart rate and stress hormone release, would bolster the idea that vigilance can be a …
Considering Side Biases In Vigilance And Fear, Lesley J. Rogers
Considering Side Biases In Vigilance And Fear, Lesley J. Rogers
Animal Sentience
Measures of vigilance and fear might be more consistently associated if side biases are taken into account, because the right side of the brain is specialised to detect predators and to express fear responses. In species with eyes positioned laterally and with relatively small binocular fields, this brain asymmetry is manifested as eye preferences because each eye sends most of its input to be processed in the opposite side of the brain. Hence, responses elicited by stimuli on the animal’s left side are more likely be associated with fear than are responses to the same stimuli on the animal’s right …
Fear And Loathing On The Landscape: What Can Foraging Theory Tell Us About Vigilance And Fear?, Burt P. Kotler, Joel S. Brown
Fear And Loathing On The Landscape: What Can Foraging Theory Tell Us About Vigilance And Fear?, Burt P. Kotler, Joel S. Brown
Animal Sentience
We discuss fear and vigilance from the perspective of foraging theory. Rather than focusing on proximate indicators of fear, we suggest that fear is an adaptation for assigning a cost to activities that incur a risk of injury or death. We use theory to provide definitions for fear and vigilance and then use that theory to compare them. We agree that there are limits to the reliability of vigilance as an indicator of fear, but we arrive at this conclusion differently.
Animal Pain And The Social Role Of Science, Leslie Irvine
Animal Pain And The Social Role Of Science, Leslie Irvine
Animal Sentience
Assuming that all animals are sentient would mean ending their use in most scientific research. This does not necessarily imply an unscientific or anti-scientific stance. Examining the social role of science reveals its considerable investment in preserving the status quo, including the continued use of animal subjects. From this perspective, the use of animal subjects is a custom that science could move beyond, rather than a methodological requirement that it must defend.
Assessing Negative And Positive Evidence For Animal Pain, Robert W. Elwood
Assessing Negative And Positive Evidence For Animal Pain, Robert W. Elwood
Animal Sentience
Jonathan Birch suggests that we should take one well-conducted study that produces results consistent with the idea of pain as being sufficient to invoke the animal sentience precautionary principle. Here, I consider how to balance negative and positive results from such studies using examples from my own work. I also consider which criteria of pain might provide strong inference about pain and which may prove to be weaker.
Positive Emotions And Quality Of Life In Dogs, Patrizia Piotti
Positive Emotions And Quality Of Life In Dogs, Patrizia Piotti
Animal Sentience
Positive affect is fundamental to ensuring good animal welfare. Discrete and dimensional theories of emotion have recently been used to explore the relation between cognition and affect and to develop cognitive measures of positive affect. Human quality-of-life assessment focuses on positive affect, which is difficult to measure objectively in dogs. Expanding on Kujala’s (2017) discussion of positive emotions and cognitive measures of affect, I suggest how these are relevant to assessing canine quality of life.
Mental Representations Are Not Necessary For Fish Consciousness, Luis H. Favela
Mental Representations Are Not Necessary For Fish Consciousness, Luis H. Favela
Animal Sentience
Woodruff (2017) argues that teleost fishes are capable of phenomenal consciousness. Central to his argument is the assumption that phenomenal consciousness is representational in nature. I think the commitment to a representational theory of consciousness undermines Woodruff’s case for teleost phenomenal consciousness. The reason is that organisms do not need to perceive the world indirectly via mental images/representations in order to have phenomenological experiences. My argument is based on considerations of ecological psychology and comparative ethology.
Methodological Suggestions For Inferring Fear From Vigilance, Julie A. Teichroeb
Methodological Suggestions For Inferring Fear From Vigilance, Julie A. Teichroeb
Animal Sentience
I suggest some methods for data-collection and analysis that may help researchers infer fear from vigilance.
What Can Research On Nonhumans Tell Us About Human Dissonance?, Jennifer Vonk
What Can Research On Nonhumans Tell Us About Human Dissonance?, Jennifer Vonk
Animal Sentience
Zentall’s thoughtful review of the literature on cognitive dissonance in nonhumans helps to highlight the common finding that similar outcomes in humans and nonhumans can be attributed to different underlying mechanisms. I advocate a more fully comparative approach to the underlying mechanisms, avoiding the assumption of shared processes in humans and nonhumans.
Choice-Induced Preference: A Challenge For Contrast, Benjamin R. Eisenreich, Benjamin Y. Hayden
Choice-Induced Preference: A Challenge For Contrast, Benjamin R. Eisenreich, Benjamin Y. Hayden
Animal Sentience
In his target article, Zentall asks: “to experience cognitive dissonance is it necessary for one to have conflicting beliefs or even beliefs at all?” He then argues that a simple behavioral process, the Within Trial Contrast Effect, may be sufficient to explain observed cognitive dissonance effects in nonhuman animals and possibly humans as well. We agree with Zentall that this effect is sufficient to explain many reported cognitive dissonance effects in nonhuman animals, but question its sufficiency for primate behavior (both monkeys and humans).
Consciousness In Teleosts: There Is Something It Feels Like To Be A Fish, Michael L. Woodruff
Consciousness In Teleosts: There Is Something It Feels Like To Be A Fish, Michael L. Woodruff
Animal Sentience
Ray-finned fish are often excluded from the group of non-human animals considered to have phenomenal consciousness. This is generally done on the grounds that the fish pallium lacks a sufficiently expansive gross parcellation, as well as even minimally sufficient neuronal organization, intrinsic connectivity, and reciprocal extrinsic connections with the thalamus to support the subjective experience of qualia. It is also argued that fish do not exhibit the level of behavioral flexibility indicative of consciousness. A review of neuroanatomical, neurophysiological and behavioral studies is presented which leads to the conclusion that fish do have neurobiological correlates and behavioral flexibility of sufficient …
Sentience In Living Tissue, Alfredo Pereira Jr.
Sentience In Living Tissue, Alfredo Pereira Jr.
Animal Sentience
I agree with Woodruff’s concept of sentience but must disagree about what he proposes as the biological correlates of feeling. Based on the interpretation of brain function originally presented by Camilo Golgi, I assume that feelings are instantiated by hydro-ionic waves in living tissue. From this viewpoint, the anatomical, physiological and behavioural criteria of Woodruff would not be necessary to argue for sentience in fish.
Learning, Memory, Cognition, And The Question Of Sentience In Fish, Robert Gerlai
Learning, Memory, Cognition, And The Question Of Sentience In Fish, Robert Gerlai
Animal Sentience
Evolutionarily conserved features have been demonstrated at many levels of biological organization across a variety of species. Evolutionary conservation may apply to complex behavioral phenomena too. It is thus not inconceivable that a form of sentience does exist even in the lowest order vertebrate taxon, the teleosts. How similar it is to human sentience in its level of complexity or in its multidimensional features is a difficult question, especially from an experimental standpoint, given that even the definition of human sentience is debated. Woodruff attempts a Turing-like test of fish sentience, and lists numerous neuroanatomic, neurophysiological and behavioral similarities between …
Social Dog — Emotional Dog?, Stefanie Riemer
Social Dog — Emotional Dog?, Stefanie Riemer
Animal Sentience
Based on their high sociability and their capabilities in social cognition, we should conclude that dogs experience rich emotions in the social domain. I discuss the importance of dog-human attachment and some of the controversial evidence for so-called secondary emotions, which leaves many questions to answer.
The Potential For Sentience In Fishes, Jay R. Stauffer Jr.
The Potential For Sentience In Fishes, Jay R. Stauffer Jr.
Animal Sentience
Balcombe’s book is filled with information on the biology, behavior, and life history of fishes. I do not agree with all his premises. I am still somewhat perplexed about the discussion of whether fish feel pain; I am not sure whether the distinction between nociception and pain makes any difference. Overall, however, his treatment of the principles of both natural and sexual selection is comprehensive and accurate, and has greatly increased my knowledge and awareness of the biology, ethology, and potential for sentience in fishes. In summary, this work has exposed me to new ideas about how to examine fishes …
Studying Dog Emotion Beyond Expression And Without Concern For Feeling, Peter F. Cook
Studying Dog Emotion Beyond Expression And Without Concern For Feeling, Peter F. Cook
Animal Sentience
Studies of dog emotion have focused on the expression of social emotion, either because this is taken to suggest human-like feeling states in dogs or because it has been the most accessible signal of dog emotional processing. I argue for an approach grounded in affective neuroscience, relying on direct measures of physiology across different contexts. This work may be particularly fertile in exploring social emotion in the dog, not because dogs necessarily share human emotional states, but because they are unique in having likely evolved to fit a human social niche.
Dissonance Reduction In Nonhuman Animals: Implications For Cognitive Dissonance Theory, Cindy Harmon-Jones, Nick Haslam, Brock Bastian
Dissonance Reduction In Nonhuman Animals: Implications For Cognitive Dissonance Theory, Cindy Harmon-Jones, Nick Haslam, Brock Bastian
Animal Sentience
We review the evidence for dissonance reduction in nonhuman animals and examine the alternative explanations for these effects. If nonhuman animals engage in dissonance reduction, this supports the original theory as proposed by Festinger (1957) over the revisions to the theory that focused on the self-concept. Evidence of animal sentience, including dissonance reduction, may be a source of cognitive dissonance.
Experiment Versus Analogy In The Search For Animal Sentience, Geoffrey Hall
Experiment Versus Analogy In The Search For Animal Sentience, Geoffrey Hall
Animal Sentience
Deciding between rival accounts of an instance of an animal’s behavior can frequently be achieved by experimental tests of different predictions made by the alternatives. When, however, one (or both) of the alternatives is expressed in terms of the mental state of the animal, an experimental test to distinguish them can be hard to find. Although it is unsatisfactory in many ways, it may be necessary to fall back on argument from analogy with human behavior and experience.
Cognitive Continuity In Cognitive Dissonance, David R. Brodbeck, Madeleine I. R. Brodbeck
Cognitive Continuity In Cognitive Dissonance, David R. Brodbeck, Madeleine I. R. Brodbeck
Animal Sentience
Zentall’s (2016) model of cognitive dissonance is compatible with cognitive continuity between humans and nonhumans. It may help explain cognitive dissonance-like behavior in many species, including humans. It is also consistent with Tinbergen’s (1963) ‘four whys’ in ethological explanation.
Establishing That Contrast Is Cognitive Dissonance, Travis R. Smith
Establishing That Contrast Is Cognitive Dissonance, Travis R. Smith
Animal Sentience
Zentall suggests that the same mechanism underlies cognitive dissonance in humans and the within-trial contrast effect in pigeons (and humans). The contrast effect has face validity in explaining cognitive dissonance, but more research is needed to establish construct validity. To determine whether both phenomena share the same mechanism, future research should test (1) whether both share physiological processes, (2) whether individuals who show sensitivity to one are also sensitive to the other, and (3) whether both phenomena are affected by the same changes in an independent variable.
Cognitive Dissonance Or Contrast? It Could Be Both, Thomas Zentall
Cognitive Dissonance Or Contrast? It Could Be Both, Thomas Zentall
Animal Sentience
My target article suggested that cognitive dissonance may be accounted for by a simpler mechanism: contrast. Whether contrast can explain all cognitive dissonance effects is an empirical question, but it is always useful to try to distinguish simpler mechanisms from more complex cognitive ones. The insistence that cognitive dissonance is a human-only process quite different from contrast may be a self-serving means of justifying the exploitation of animals.
The Emotional Brain Of Fish, Sonia Rey Planellas
The Emotional Brain Of Fish, Sonia Rey Planellas
Animal Sentience
Woodruff (2017) analyzes structural homologies and functional equivalences between the brains of mammals and fish to understand where sentience and social cognition might reside in teleosts. He compares neuroanatomical, neurophysiological and behavioural correlates. I discuss current advances in the study of fish cognitive abilities and emotions, and advocate an evolutionary approach to the underlying basis of sentience in teleosts.