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Articles 241 - 270 of 469
Full-Text Articles in Evolution
Time To (Finally) Acknowledge That Fish Have Emotionality And Pain, Konstantin A. Demin, Anton M. Lakstygal, Allan V. Kalueff
Time To (Finally) Acknowledge That Fish Have Emotionality And Pain, Konstantin A. Demin, Anton M. Lakstygal, Allan V. Kalueff
Animal Sentience
The increasing work using fish as a model organism calls for a better understanding of their sentience. While growing evidence suggests that pain and emotionality exist in zebrafish, many deniers continue to ignore the evidence. Here we revisit the main conceptual breakthroughs in the field that argue clearly for pain and emotionality. We call for an end to denial and a focus on studying the mechanisms of fish pain and emotionality, and their translational relevance to human conditions.
Defining Pain And Painful Sentience In Animals, Edgar T. Walters
Defining Pain And Painful Sentience In Animals, Edgar T. Walters
Animal Sentience
Sentience is essential to most definitions of pain, including a detailed definition invoked by Sneddon et al. to argue that adult and perhaps larval fish feel pain. Because proving painful sentience in non-human animals is not feasible, multiple lines of indirect evidence are needed to implicate pain. This commentary examines the list of 17 criteria used by Sneddon et al. to conclude that fish have conscious pain. The criteria include tests of nociceptive, motivational, and cognitive properties useful for revealing pain-like states that can be understood biologically and be related evolutionarily to human pain. However, additional research is needed to …
Nocifensive Behavior As Evidence For Sentient Pain In Fish, Marissol Leite Da Silva, Caio Maximino, Diógenes Henrique Siqueira-Silva
Nocifensive Behavior As Evidence For Sentient Pain In Fish, Marissol Leite Da Silva, Caio Maximino, Diógenes Henrique Siqueira-Silva
Animal Sentience
Fish nocifensive behavior can be studied and understood similarly to the way pain is studied and understood in more advanced vertebrates. Nocifensive behavior is a behavioral and physiological response to a noxious stimulus that leads to the fish avoiding it in the future. This behavioral flexibility is an important criterion for inferring pain sentience in fish. Modulation of the nocifensive behavior by anxiety, fear, or stress has already been demonstrated in zebrafish. The affective experiences of fish will not be identical to those of human beings, clearly. Empirical research will need to ascertain how similar they are.
Fish Are Smart And Feel Pain: What About Joy?, Becca Franks, Jeff Sebo, Alexandra Horowitz
Fish Are Smart And Feel Pain: What About Joy?, Becca Franks, Jeff Sebo, Alexandra Horowitz
Animal Sentience
Sneddon et al. rightly point out that the evidence of fish pain is now so strong and comprehensive that arguments against it have become increasingly difficult to defend in balanced academic discourse. But sentience involves more than just pain. Recent research indicates that fish have an impressive range of cognitive capacities, including the capacity for pleasure, in the form of play and other behaviors likely to involve positively valenced experience. Having made the case for pain, research can now focus on other aspects of fish sentience. Doing so will not only provide a more complete picture of the mental lives …
Ample Evidence For Fish Sentience And Pain, Lynne U. Sneddon, David C.C. Wolfenden, Matthew C. Leach, Ana M. Valentim, Peter J. Steenbergen, Nabila Bardine, Donald M. Broom, Culum Brown
Ample Evidence For Fish Sentience And Pain, Lynne U. Sneddon, David C.C. Wolfenden, Matthew C. Leach, Ana M. Valentim, Peter J. Steenbergen, Nabila Bardine, Donald M. Broom, Culum Brown
Animal Sentience
The majority of commentaries are supportive of our position on the scepticism that muddies the waters surrounding fish pain and sentience. There is substantial empirical evidence for pain in fish. Animals’ experience of pain cannot be compared to artificial intelligence (AI) because AI can only mimic responses to nociceptive input on the basis of human observations and programming. Accepting that fish are sentient would not be detrimental to the industries reliant on fish. A more proactive discussion between scientists and stakeholders is needed to improve fish welfare for the benefit of all.
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 …
Sentience In Fishes: More On The Evidence, Michael L. Woodruff
Sentience In Fishes: More On The Evidence, Michael L. Woodruff
Animal Sentience
In my target article, I argued that the brains of ray-finned fishes of the teleost subclass (Actinopterygii) are sufficiently complex to support sentience — that these fishes have subjective awareness of interoceptive and exteroceptive sense experience. Extending previous theories centered on the tectum, I focused on the organization of the fish pallium. In this Response to the commentaries, I clarify that I do not propose that the fish pallium is, or must be, homologous to the mammalian neocortex to play a role in sentience. Some form of a functionalist approach to explaining the neural basis of sentience across taxa is …
Fish Consciousness, David Gamez
Fish Consciousness, David Gamez
Animal Sentience
Woodruff makes two arguments to support his claim that ray-finned fish are conscious: (1) Fish neuroanatomy has similarities with the structures in the human brain that support consciousness. (2) The complexity and flexibility of fish behaviour suggest that they are conscious. This commentary will argue that neither the neuroanatomical nor the behavioural argument can provide conclusive evidence for consciousness in fish. We should suspend judgement until we have discovered mathematical theories of consciousness that can reliably map between states of consciousness and states of the physical world.
Why Do We Want To Think Humans Are Different?, Colin A. Chapman, Michael A. Huffman
Why Do We Want To Think Humans Are Different?, Colin A. Chapman, Michael A. Huffman
Animal Sentience
One harmful consequence of creating categories where one group is unique and superior to others is that it justifies committing negative, often atrocious, acts on the members of the inferior group. Correcting divisive human categorizations (racial superiority, gender superiority) has bettered society. Scholars have often claimed that humans are unique and superior to nonhuman animals. These claims need to be reevaluated. Many have already been refuted. Animals have been shown to outperform humans in many tasks, including cognitive ones. Here we raise the question: Has the false sense of superiority been used to justify human cruelty to animals?
Human And Nonhuman Animals: Equals In Uniqueness, Uta Maria Juergens
Human And Nonhuman Animals: Equals In Uniqueness, Uta Maria Juergens
Animal Sentience
Chapman & Huffman attack the idea that humans are unique and therefore superior to nonhuman beings. They call on humankind to use their “intellect to change [their] actions.” I am in full accord with their line of thought, which differentiates uniqueness from superiority and enjoins humans to take responsible action. I suggest, however, that humans are unique with regard to cognitive fluidity. The same conclusions can be reached via another argument based on human uniqueness.
Good News: Humans Are Neither Distinct Nor Superior, Anne Benvenuti
Good News: Humans Are Neither Distinct Nor Superior, Anne Benvenuti
Animal Sentience
Chapman & Huffman suggest that to correct our thinking about the supposed superiority of humans over other animals, we must train our reasoned investigation upon ourselves. Their thesis may usefully be viewed from within the general findings of the cognitive revolution in science, particularly findings that speak to the limits of rationality in everyday thought of humans. That we have failed — throughout a long history of scientific and philosophical thought — to ask fundamental questions about animal cognition and emotion is rooted in the fact that much of our thinking, feeling, and behaving is beyond our own immediate grasp. …
Human Superiority?, Bernard Rollin
Human Superiority?, Bernard Rollin
Animal Sentience
Like Charles Darwin and George Romanes, I am quite willing to use anecdotal information as a source of knowledge about animal behavior. There are many more people observing nonhuman animals than there are people conducting controlled experiments, and we can thereby learn that behaviors we think are unique to humans are shared by other animals. From a strictly biological point of view, it makes no sense to speak of “human superiority.” One species of animal can be superior to another only in terms of survival and niche occupation. As moral concern for animals increases across the world, claims of human …
Using Anthropocentrism To The Benefit Of Other Species, Vanessa Wilson
Using Anthropocentrism To The Benefit Of Other Species, Vanessa Wilson
Animal Sentience
Chapman & Huffman (2018) argue that we should not consider humans as unique or superior to other animals when we have the chance to explore the diversity of the traits of other species. This is a valid and progressive point in our approach to research, but I suggest that an anthropocentric approach can have animal welfare benefits when it helps us perceive other species – especially distantly related ones such as crustaceans – in a human light.
Why Humans Are Different, Tara Fox Hall
Why Humans Are Different, Tara Fox Hall
Animal Sentience
A central human problem is our inference from the fact that we are the world’s most intelligent species to the alleged fact that we are superior. This inference is not mandatory. Successfully combating this inference may require the threat of a large-scale catastrophe to our species.
Individuals In The Wild, Bob Fischer
Individuals In The Wild, Bob Fischer
Animal Sentience
If many wild animals have net negative lives, then we have to consider how likely it is that the good for animals, considered as individuals, aligns with the good for species, or the climate, or the preservation of wild spaces.
How To Foster Respect For Animals? Superiority, Dissimilarity, And Prejudice, Matteo Colombo
How To Foster Respect For Animals? Superiority, Dissimilarity, And Prejudice, Matteo Colombo
Animal Sentience
Chapman & Huffman (C & H) might be taken to argue as follows: Humans may treat animals however they want only if humans are superior to animals. But humans are not superior to animals. Therefore, humans may not treat animals however they want. Whatever its merit, this is not C & H’s actual argument. Their point, instead, is that humans often mistreat animals because they tend to perceive them as inferior. A remedy for animal mistreatment would then be acknowledging the deep similarities between us and animals. But is C & H’s suggested remedy likely to be effective to foster …
Insulting Words: "They Are Animals!", Carolyn A. Ristau
Insulting Words: "They Are Animals!", Carolyn A. Ristau
Animal Sentience
As Chapman & Huffman state, creating divisive human categories has rationalized atrocities committed against the “other.” Labeling neighboring warring villagers as “animals” is considered a despicable insult. Yet contemporary scientific views of many animals grant them thinking and conscious faculties, and the capacity for impressive achievements, many unattainable by humans. Robots, too, can accomplish many similar feats. But the essential reason we must protect animals is not because of their admirable abilities, but their capacity for consciousness, for suffering. Robots are not conscious. Participants in the human-animal debate should not complain about changing criteria for determining human uniqueness. New and …
We Don’T Want To Know What We Know, Judith Benz-Schwarzburg
We Don’T Want To Know What We Know, Judith Benz-Schwarzburg
Animal Sentience
Why are humans so ignorant with regard to the fundamental gap between ethical claims and the status quo of the human-animal relationship? To answer this, we should include more psychological and sociological perspectives in our discussions.
Two Fallacies In Comparisons Between Humans And Non-Humans, Don Ross
Two Fallacies In Comparisons Between Humans And Non-Humans, Don Ross
Animal Sentience
The hypothesis that humans are superior to non-humans by virtue of higher cognitive powers is often supported by two recurrent fallacies: (1) that any competence shown by humans but not by our closest living relatives (apes) must be unique to humans; and (2) that grades of intelligence can be inferred from behavior without regard to motivational structures.
Is Superiority A Necessary Aspect Of Cruelty?, William H. Edmondson
Is Superiority A Necessary Aspect Of Cruelty?, William H. Edmondson
Animal Sentience
Chapman & Huffman argue that humans inflict cruelty without apparent concern because of their categorization of the victims as inferior. The supposed inferiority of non-human animals can be argued against on the basis of documentation and analysis of behaviour. Humans continue to inflict cruelty on their own and other species. It is not obvious that a sense of superiority is a necessary aspect of cruel behaviour. Nor is it obvious that further enlightenment regarding the cognitive status of non-humans will diminish cruelty.
What Sets Us Apart Could Be Our Salvation, Anne Fawcett, Paul Mcgreevy
What Sets Us Apart Could Be Our Salvation, Anne Fawcett, Paul Mcgreevy
Animal Sentience
We agree with Chapman & Huffman that human capacities are often assumed to be unique — or attempts are made to demonstrate uniqueness scientifically — in order to justify the exploitation of animals and ecosystems. To extend the argument that human exceptionalism is against our interests, we recommend adopting the One Welfare framework, according to which animal welfare, environmental sustainability and human wellbeing are inseparably linked. Let us distinguish ourselves from other animals by resisting our short- and mid-term Darwinian inclinations, consuming less, reproducing less, and striving for a much longer-term biological fitness for us all.
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 …
Ethical Theories And Perspectives On End-Of-Life Decisions, Lauren Skelton
Ethical Theories And Perspectives On End-Of-Life Decisions, Lauren Skelton
Dialogue & Nexus
This paper approaches several different ethical theories to see how they interact with the issue of withdrawing and withholding life-sustaining care. After the theories of Utilitarianism, Kantian and Prima Facie Deontology, Virtue Ethics, and Evolutionary Ethics are explored at length, Deontological theories are proven to be the best decision-making guide from the perspective of both patients and those in policy-making positions. When used together, Kantian and Prima Facie Deontology offer the overall best combination of ethical instruction and personal freedom.
Ecofeminism: The Path Towards Healing The Earth, Jamie Thompson
Ecofeminism: The Path Towards Healing The Earth, Jamie Thompson
Dialogue & Nexus
The concept of the patriarchy, or any concept in which one group dominates another, is inseparable from the formation of human kind’s domination of nature. This domination of nature has led to the current the ecological crisis humanity faces. Those who deny climate change can admit to the massive amounts of pollution, trash, and deforestation. Despite this worsening economic crisis, those in power have been slow to react. Women can ultimately provide and lead the movement to solve this ecological crisis through the growing movement of Ecofeminism. In the philosophy of Ecofeminism, individuals recognize and reject western dualistic thinking that …
The Origins Of Morality, Paulina Sanchez
The Origins Of Morality, Paulina Sanchez
Dialogue & Nexus
In modern society, there exists a standard for moral conduct that seems to reign universal over many societies of people. Pinpointing the origins of morality, however, can become problematic because of how one approaches what morality is and what its purpose is in society. Psychologists may point out the social constructs and norms that allow for morality to unfold. Evolutionary biologists may give evidence of human-related species that have developed similar behavioral standards. A Christian theologian may look to scripture in explaining a Creator who ordained that all abide by the standards of conduct most pleasing to this deity. Which …
The Altruistic Self, Nathan Dougherty
The Altruistic Self, Nathan Dougherty
Dialogue & Nexus
Altruism as a purely naturalistic phenomenon self-defeats the term altogether; however, theology also makes unsubstantiated claims that some behaviors are purely selfless. I will first define various conceptual forms of altruism and then offer explanations of the term from neurological, evolutionary and psychological investigations. Despite the position that altruism can be reduced to a fantastical impossibility bearing neither the arms of science nor theology, it is also a fallacy to separate it from a religiously derived supernatural altruism that carries no implications for the realm of morality.
A New Taxonomy Of Altruism In Terms Of Prosocial Behaviors, Kristin Kaiser
A New Taxonomy Of Altruism In Terms Of Prosocial Behaviors, Kristin Kaiser
Dialogue & Nexus
The definition of altruism has been studied, explained, and even confused by many scholars in various fields. The term itself has been inappropriately used to describe prosocial behaviors that do not fall within the definition of altruism. An evaluation of Grant Ramsey’s taxonomy of altruism, which includes biological altruism, psychological altruism, and helping altruism, proves that it is not adequate in categorizing organism’s behaviors. A new taxonomy, with the branches of kin selection, reciprocity, and aesthetic altruism, is presented and explained to clarify the definition of altruism and alleviate confusion about how to describe prosocial behaviors. Both naming systems are …
The Evolutionary Theodicy Problem, Houston Schoonmaker
The Evolutionary Theodicy Problem, Houston Schoonmaker
Dialogue & Nexus
Evolutionary theodicies attempt to explain how innocent suffering, death, and extinction seen throughout the evolutionary process of evolution can coincide with believing in a loving God. Since Darwin, scholars have questioned the importance of studying natural selection at such an intricate level. With the knowledge of natural selection, the fact that great suffering is witnessed across nature permits doubts in discussions regarding a benevolent God that created the universe. In this paper, I begin with background information about evolution, theodicy, and how they are related. I look at two major perspectives: the belief that evolution ameliorates the theodicy problem or …
Neuroscience, Materialism, And The Soul: Limit Questions, Jeremy M. Aymard
Neuroscience, Materialism, And The Soul: Limit Questions, Jeremy M. Aymard
Dialogue & Nexus
In light of recent discoveries in neuroscience linking the mind to physical processes, Christian philosophers have resorted to a more materialistic view of the human person, using neuroscience as support for their view that an immaterial soul does not exist. In this essay, I will point out a major flaw in the logic for defending a materialistic view, argue that either a bipartite or tripartite view of the human person is more aligned with Scripture, and hopefully point towards a more reliable means for attaining truth regarding human nature and the soul.
Intelligent Design: Should We Teach It?, Sarah-Kate Oliver
Intelligent Design: Should We Teach It?, Sarah-Kate Oliver
Dialogue & Nexus
Belief about the origins of the universe and mankind is an important aspect of most world religions. While many ‘progressive’ Christians view the Genesis accounts of creation as mythical or allegorical, some ‘fundamentalist’ Christians claim it is a literal and historical account of the origins of life. The scientific community, on the other hand, views Darwin’s Theory of Evolution as the definitive explanation of the origin of all species on Earth including humans. As science has continued to line up behind evolution, it has been integrated into the public school curriculum. The question examined by this paper is: should the …