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Articles 211 - 240 of 406
Full-Text Articles in Neuroscience and Neurobiology
Canine Emotions: Guidelines For Research, Miiamaaria V. Kujala
Canine Emotions: Guidelines For Research, Miiamaaria V. Kujala
Animal Sentience
In the target article, I called for a discussion on the nature and extent of dogs’ emotions. The commentators generally agreed on the existence of dog emotions, but the diversity and quality of dog emotions, as well as the influence of human social cognition on perceiving dog emotions, raised more debate. To respond to the stimulating commentaries, I touch briefly on the philosophy of (canine) mind and discuss further the benefits of comparing cognition across species, secondary emotions, and the shaping of canine emotions by evolution, breeding and experience. I conclude with suggestions for future research guidelines on studies of …
The Inconvenient Truth About Thinking Chickens, Lori Marino
The Inconvenient Truth About Thinking Chickens, Lori Marino
Animal Sentience
Original Abstract: Domestic chickens are members of an order, Aves, which has been the focus of a revolution in our understanding of neuroanatomical, cognitive, and social complexity. Some birds are now known to be on a par with many mammals in their intelligence, emotional sophistication, and social interaction. Yet views of chickens have largely remained unrevised in light of this new evidence. In this paper, I examine the data on cognition, emotions, personality, and sociality in chickens, exploring such areas as self-awareness, cognitive bias, social learning and self-control, and comparing their abilities with other birds and other vertebrates, particularly …
Raising Consciousness About Chicken Consciousness, Bernard Rollin
Raising Consciousness About Chicken Consciousness, Bernard Rollin
Animal Sentience
The topics explored by Marino are definitive, and should work well to lay to rest forever the widespread belief that chickens have no personality, are unintelligent, or in any other way lack a mental life.
Chickens’ Brains, Like Ours, Are Lateralized, Lesley J. Rogers
Chickens’ Brains, Like Ours, Are Lateralized, Lesley J. Rogers
Animal Sentience
This commentary draws attention to yet another attribute that has been instrumental in demonstrating the cognitive abilities of domestic chicks: lateralization of brain function. The discovery of lateralization in domestic chicks was part of the first evidence showing that humans are not unique in this respect. The effects on cognitive ability of sensory stimulation in critical stages of development have implications for the welfare of chicks, as well as other species.
Are Chicken Minds Special?, Rafael Freire, Susan J. Hazel
Are Chicken Minds Special?, Rafael Freire, Susan J. Hazel
Animal Sentience
The number of publications on chicken cognition and emotion exceeds that on most birds and is comparable to the number of publications on some more “advanced” mammals. We argue that the chicken is an excellent model for this type of research because of (1) the presence of well-established fundamental mental processes in the chicken, (2) a challenging ethological environment and (3) social pressures that may have facilitated the evolution of cognitive abilities similar to those of some mammals. Marino’s (2017) review provides an excellent foundation for the continued study of complex mental abilities in this species.
Chicken Of The Sea, Jonathan Balcombe
Chicken Of The Sea, Jonathan Balcombe
Animal Sentience
Marino summarizes research showing that chickens perform cognitively and emotionally at a higher level than previously assumed. Here, I describe capacities of teleost fishes that parallel those of chickens, including the ability to recognize human faces, perspective-taking, and referential communication. Research on chickens and on fishes reveals an emerging trend in cognitive ethology: abilities once thought limited to a scant few highly intelligent non-humans may actually occur broadly across taxa.
In Memory Of Patrick Bateson, James A. Serpell
Chickening Out Of Change: Will Knowing More About Thinking Chickens Change Public Perceptions?, Ewan Bottomley, Steve Loughnan
Chickening Out Of Change: Will Knowing More About Thinking Chickens Change Public Perceptions?, Ewan Bottomley, Steve Loughnan
Animal Sentience
This commentary examines the next step in Marino’s target article – changing people’s attitudes and beliefs about chickens. The scientific case seems clear: chickens are far more complex, psychologically and socially, than originally thought. Marino suggests we use this information to make people feel uncomfortable about their dietary choices in the hope of changing them. We review the psychological literature, examining how people maintain meat consumption despite the clash with their moral beliefs (the “meat paradox”). This work highlights the important gap between what science knows about animals and what people think about animals.
Evolutionary Continuity, Anne Benvenuti
Evolutionary Continuity, Anne Benvenuti
Animal Sentience
The principle of evolutionary continuity states that all animal capacities and behaviors exist — with variations in degree — in continuity with other species. Rather than assuming discontinuity, we should ask why any behavior observed in humans would not be found in at least some other sentient animals under similar conditions. In the case of suicide, the more pertinent issue might be the ethical one: our human responsibility for creating conditions under which other animals might deliberately seek to end their own lives.
Non-Human Animal Suicide Could Be Tested, David Lester
Non-Human Animal Suicide Could Be Tested, David Lester
Animal Sentience
Schaefer (1967) showed that mice can discriminate live from dead mice and lethal from nonlethal environments, and that they avoid a lethal environment; but the experiment lacked some controls. This might be a way to test whether mice would ever choose a lethal environment. Humans may also choose a potentially lethal environment unconsciously.
Animals Do Not Commit Suicide But Do Display Behaviors That Are Precursors Of Suicide In Humans, David Eilam
Animals Do Not Commit Suicide But Do Display Behaviors That Are Precursors Of Suicide In Humans, David Eilam
Animal Sentience
Although my commentary begins with a report about a monkey committing suicide, I agree with the target article's concluding statement that we cannot currently prove that any animal has committed suicide. The author’s proposed continuist approach is based on animal behaviors reminiscent of symptoms preceding suicide in humans (e.g., deep depression and grief). However, in both humans and nonhuman animals, these are just potential precursors of suicide, and dying as a result of grief is not necessarily suicide. In the absence of supporting evidence, the continuist hypothesis of animal suicide is not sustained.
Understanding Animal Suicide And Death Can Lead To Better End-Of-Life Care, Jessica Pierce
Understanding Animal Suicide And Death Can Lead To Better End-Of-Life Care, Jessica Pierce
Animal Sentience
Peña-Guzmán’s target article on animal suicide will help inform end-of-life care for animals by emphasizing the need for a broad research focus on animal thanatology. Greater scientific understanding of the continuum of death-related awareness, experiences, and behaviors will help us improve veterinary care for animals at the end of life.
Complicated Grief, Teya Brooks Pribac
Complicated Grief, Teya Brooks Pribac
Animal Sentience
My commentary discusses complicated grief and the ensuing sense of helplessness that may lead to suicide. I close with a story about a pygmy pig.
Can Nonhuman Animals Commit Suicide?, David M. Peña-Guzmán
Can Nonhuman Animals Commit Suicide?, David M. Peña-Guzmán
Animal Sentience
Many people believe that only humans have the cognitive and behavioral capacities needed for suicidal behavior, such as reflexive subjectivity, free will, intentionality, or awareness of death. Three counterarguments — based on (i) negative emotions and psychopathologies among nonhuman animals, (ii) the nature of self-destructive behavior, and (iii) the problem of model fidelity in suicide research — suggest that self-destructive and self-injurious behaviors among human and nonhuman animals vary along a continuum.
Tribute To Jaak Panksepp, Jonathan Balcombe
Getting To The Other Side, Debra Merskin
Getting To The Other Side, Debra Merskin
Animal Sentience
Marino’s comprehensive, detailed, and timely review provides clear evidence of the sentience of chickens and strong support for those wishing to challenge their exclusion from even the limited protections currently accorded to animals grown for food.
Sentience Does Not Require “Higher” Cognition, Giorgio Vallortigara
Sentience Does Not Require “Higher” Cognition, Giorgio Vallortigara
Animal Sentience
I agree with Marino (2017a,b) that the cognitive capacities of chickens are likely to be the same as those of many others vertebrates. Also, data collected in the young of this precocial species provide rich information about how much cognition can be pre-wired and predisposed in the brain. However, evidence of advanced cognition — in chickens or any other organism — says little about sentience (i.e., feeling). We do not deny sentience in human beings who, because of cognitive deficits, would be incapable of exhibiting some of the cognitive feats of chickens. Moreover, complex problem solving, such as transitive inference, …
Misperceiving And Underestimating The Ubiquitous Chicken, Carrie P. Freeman
Misperceiving And Underestimating The Ubiquitous Chicken, Carrie P. Freeman
Animal Sentience
Marino has provided an accurate and nuanced view about chickens’ complex capabilities as sentient individuals. I explore the implications of these findings for scholars as well as for activists in the protection of farmed animals.
Is Psychological Science Committing “Suicide” By Linguistic Muddling?, Roger K. Thomas
Is Psychological Science Committing “Suicide” By Linguistic Muddling?, Roger K. Thomas
Animal Sentience
Beginning mainly with the “cognitive revolution” in psychology in the latter half of the 20th century, psychological science has been committing “suicide” slowly via linguistic muddling. Peña-Guzmán’s target article is but one of thousands of cuts contributing to this death by “suicide.” Having said that, given the current state of affairs in animal cognition research, there is much to commend in Peña-Guzmán’s article. I leave that to others, however. This commentary explains how the suicide by muddling of psychological science is happening in general, with the understanding that it applies also to Peña-Guzmán’s target article.
On Assisted Suicide, Clark Glymour
On Assisted Suicide, Clark Glymour
Animal Sentience
What would be the moral implications of the capacity for suicide in nonhuman animals? Humans can be helped to end their lives if they no longer find them bearable. Should captive animals not be given the same possibility?
Self, Death, And Suicide: Does An Animal Know Of These?, Carolyn A. Ristau
Self, Death, And Suicide: Does An Animal Know Of These?, Carolyn A. Ristau
Animal Sentience
Peña-Guzmán makes a strong case, using examples from the media and scientific literature, that many captive animals suffer severely. In examining the possibility of animal suicide, he dismisses the need for “reflective self-subjectivity” and “intent” in suicidal behavior. He claims that at least some animals understand “death,” citing examples of behavior he deems to be death “rituals.” But these can be more simply interpreted. The possibility of animal suicide remains more dubious than Peña-Guzmán suggests.
Changes In Behavior And Emotion Under Chicken Domestication, Martin Johnsson
Changes In Behavior And Emotion Under Chicken Domestication, Martin Johnsson
Animal Sentience
Marino’s target article provides an overview of chickens’ cognition, emotion, and personality, with the aim of changing how people view chickens. In this commentary, I will agree that chickens deserve better than their reputation, but contend with a statement about the lack of behavioral change under chicken domestication.
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 …
Operationalizing Fear Through Understanding Vigilance, Ralph Adolphs
Operationalizing Fear Through Understanding Vigilance, Ralph Adolphs
Animal Sentience
Beauchamp’s target article raises important questions about the features that often accompany fear. How reliable an indicator of fear is vigilance? Is it constitutive, cause, or consequence of fear? These questions force us towards a clearer definition of “fear.”
Individual Variation In Fear Behaviour, Rob Found
Individual Variation In Fear Behaviour, Rob Found
Animal Sentience
Individual variation in behaviour adds another layer of complexity to studies of animal responses to fear and risk, but when individual responses are consistent, and correlated with other behaviours, these patterns can provide a structure that furthers our understanding. I interpret Beauchamp’s review of vigilance and fear from the perspective of my own studies of elk personality. Wild elk responses to changing stimuli (benign or aversive) illustrate how personality is a key factor in explaining variation in vigilance and fear behavior. Personality even influences how wildlife can learn to assess risk and adjust their fear responses accordingly.
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 …
Empathy In Dogs: With A Little Help From A Friend – A Mixed Blessing, Sabrina Karl, Ludwig Huber
Empathy In Dogs: With A Little Help From A Friend – A Mixed Blessing, Sabrina Karl, Ludwig Huber
Animal Sentience
Kujala (2017) presents an extensive overview of existing research on canine emotions in comparison to those of other non-human animals and humans. This commentary provides some additional research results on the intensively debated field of empathy in dogs. We focus on recent advances in the understanding of a fundamental building block of empathy — emotional contagion — and on dogs’ remarkable sensitivity for human emotions, including the skills of assistance dogs.
The Multiple Facets Of Empathy, Magdalena Boch, Claus Lamm
The Multiple Facets Of Empathy, Magdalena Boch, Claus Lamm
Animal Sentience
We discuss the definition of empathy provided by Kujala (2017) and argue that research in this field, in assigning the cognitive component of empathy only a secondary role, misses crucial information. Further knowledge about dogs’ ability for higher cognitive processes helps (a) in interpreting results such as potential prosocial behavior in dogs and (b) sheds light on the question of whether abilities like perspective-taking and self-other distinction are uniquely human.
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 …
Nagel-Ing Worries About Fish Sentience, Hugh Lafollette
Nagel-Ing Worries About Fish Sentience, Hugh Lafollette
Animal Sentience
Woodruff (2017) argues that teleosts’ more sophisticated behaviors make sense only if they are sentient. Moreover, their neuroanatomy, although different from mammalian, is sufficiently complex to support sentience. I answer some potential objections to Woodruff’s argument, and try to trace its moral significance. In so doing, I briefly address Birch’s (2017) target article as well.