Open Access. Powered by Scholars. Published by Universities.®

Philosophy of Mind Commons™

Open Access. Powered by Scholars. Published by Universities.®

Articles 61 - 90 of 454

Full-Text Articles in Philosophy of Mind

Animal Sentience Research: Synthesis And Proposals, Andrew Crump, Heather Browning, Alex Schnell, Charlotte Burn, Jonathan Birch Jan 2022

Animal Sentience Research: Synthesis And Proposals, Andrew Crump, Heather Browning, Alex Schnell, Charlotte Burn, Jonathan Birch

Animal Sentience

Most commentaries on our target article broadly support our approach to evaluating evidence of animal sentience. In this Response, we clarify the framework’s purpose and address criticisms of our criteria. A recurring theme is that a framework to synthesise current evidence of sentience is not the same as an agenda for future directions in animal sentience research. Although future directions are valuable, our framework aims to evaluate existing evidence and inform animal welfare legislation.


Sentience In Decapod Crustaceans: A General Framework And Review Of The Evidence, Andrew Crump, Heather Browning, Alex Schnell, Charlotte Burn, Jonathan Birch Jan 2022

Sentience In Decapod Crustaceans: A General Framework And Review Of The Evidence, Andrew Crump, Heather Browning, Alex Schnell, Charlotte Burn, Jonathan Birch

Animal Sentience

We outline a framework for evaluating scientific evidence of sentience, focusing on pain experience. It includes eight neural and cognitive-behavioural criteria, with confidence levels for each criterion reflecting the reliability and quality of the evidence. We outline the rationale for each criterion and apply our framework to a controversial sentience candidate: decapod crustaceans. We have either high or very high confidence that true crabs (infraorder Brachyura) satisfy five criteria, amounting to strong evidence of sentience. Moreover, we have high confidence that both anomuran crabs (infraorder Anomura) and astacid lobsters/crayfish (infraorder Astacidea) meet three criteria—substantial evidence of sentience. The case is, …


Defining And Assessing Sentience, Barry O. Hughes Jan 2022

Defining And Assessing Sentience, Barry O. Hughes

Animal Sentience

Precisely what is meant by the term sentience and how does it overlap with being conscious? We accept that animals have feelings but how do we know what they are and can we measure them? It is important that we clarify the terminology underlying these difficult concepts. Over the last 50 years a scientific discipline has developed to tackle these questions in a systematic way. We have to avoid thoughtless anthropomorphism yet we have to try to relate sentience in animals, as appropriate, to corresponding experiences in humans.


Lack Of Imagination Can Bias Our View Of Animal Sentience, Brian Key, Deborah Brown Jan 2022

Lack Of Imagination Can Bias Our View Of Animal Sentience, Brian Key, Deborah Brown

Animal Sentience

How an animal reacts to a sensory stimulus is often used to assess whether that animal can experience feelings such as pain and pleasure. This behavioural path is typically complemented with reference to how a human would normally respond to and experience an analogous stimulus. Together, these approaches can lead to a “hard to imagine otherwise” argument for feelings. It is time to go beyond these qualitative assessments and to now determine whether a nervous system can execute the neural functions necessary for sentience.


Sentience And The Science-Policy Interface, Jonathan Birch Jan 2022

Sentience And The Science-Policy Interface, Jonathan Birch

Animal Sentience

I contrast my picture of the relationship between the science and policy of animal sentience with that of Marian Stamp Dawkins, who thinks “the science of animal sentience and the politics of animal welfare should be kept separate” because they involve irreconcilably different standards of evidence. On my alternative picture, (i) the science of animal sentience, like any other empirical science, delivers evidence but not certainty; (ii) this evidence allows us to make better practical decisions, both within and outside science and (iii) the quality standards we apply to the evidence should be high in all contexts, including the formulation …


Sentience And Sentient Minds, John Anthony Webster Jan 2022

Sentience And Sentient Minds, John Anthony Webster

Animal Sentience

My commentary builds on Rowan et al.’s (2022) comprehensive review to address the question ‘what do we mean by sentience?’ It suggests how we might recognise degrees of sentience within the animal kingdom, ranging from primitive sensations such as hunger and pain to more complex emotions that determine quality of life.


Defending Human Difference By Raising The Bar, Joe Gough Jan 2022

Defending Human Difference By Raising The Bar, Joe Gough

Animal Sentience

Chapman & Huffman (C&H) offer a theory of why we humans want to believe that we are different: to justify our cruelty to animals. This commentary offers further supporting evidence of this and examines more closely what the claim that humans are ‘different’ amounts to. It also considers some methodological issues in animal psychology closely related to C&H ‘s theory. These problems result from a common strategy for defending hypotheses about human difference.


Of Course Crustaceans Are Sentient: But There's More To The Story, Arthur S. Reber, Frantisek Baluska, William B. Miller Jr. Jan 2022

Of Course Crustaceans Are Sentient: But There's More To The Story, Arthur S. Reber, Frantisek Baluska, William B. Miller Jr.

Animal Sentience

We are in basic agreement with Crump et al. that animal welfare, particularly with regard to the experience of pain, is a topic of importance. However, we come to the issue from a different perspective, one in which all species are sentient and can feel pain. The implications of this theory are discussed.


Time To Stop Pretending We Don’T Know Other Animals Are Sentient Beings, Marc Bekoff Jan 2022

Time To Stop Pretending We Don’T Know Other Animals Are Sentient Beings, Marc Bekoff

Animal Sentience

Rowan et al.’s target article is an outstanding review of some of the history of the science of sentience, but one would have liked to see a much stronger “call to action.” We don’t need any more data to know that many other animals are sentient beings whose lives must be protected from harm in a wide variety of contexts. It is not anti-science to want more action on behalf of other animals right now.


All Living Organisms Are Sentient, Arthur S. Reber, Frantisek Baluska, William B. Miller Jr. Jan 2022

All Living Organisms Are Sentient, Arthur S. Reber, Frantisek Baluska, William B. Miller Jr.

Animal Sentience

We argue that all living organisms, from the simplest unicellular prokaryotes to Homo sapiens, have valenced experiences—feelings as states of preference—and are capable of cognitive representations. Bacteria can learn, form stable memories, and communicate, hence solve problems. Rowan et al.'s statement that "Subjective feelings are just that — subjective — and are available only to the animal (or human) experiencing them" is true but irrelevant. When we see a fish flopping about in the bottom of a boat we immediately recognize suffering without having a glimpse of the nature of piscine distress. Some controlled anthropomorphism can go a …


The Science Of Animal Sentience And The Politics Of Animal Welfare Should Be Kept Separate, Marian Stamp Dawkins Jan 2022

The Science Of Animal Sentience And The Politics Of Animal Welfare Should Be Kept Separate, Marian Stamp Dawkins

Animal Sentience

Although linked historically by Rowan et al., the scientific study of animal sentience and political campaigns to improve animal welfare should be kept separate, for at least two reasons. First, the separation makes it clear that standards of evidence acceptable for ethical or political decisions on animal welfare can be lower than those required for a rigorously scientific approach to animal sentience. Second, it helps to avoid confirmatory bias in the form of giving undue weight to results that are in line with pre-conceived ideas and political views.


Revisiting Donald Griffin, Founder Of Cognitive Ethology, Carolyn A. Ristau Jan 2022

Revisiting Donald Griffin, Founder Of Cognitive Ethology, Carolyn A. Ristau

Animal Sentience

Donald Griffin’s writings, beginning with The Question of Animal Awareness (1976), strove to persuade scientists to study the possibility of animal sentience, the basis of Rowan et al.’s efforts to promote animal well-being. Facing great hostility (but also some acceptance) for his ideas, Griffin initially avoided animal welfare advocacy, fearing it would further undermine his efforts to gain recognition of animal sentience. In later years, however, he began to ponder the ethical implications of animal sentience, intending to study wild elephants’ communication and social behavior to better understand their experienced life and apply it to improving conservation methods. As he …


The Reality And Prevalence Of Animal Sentience, Antonio Damasio Jan 2022

The Reality And Prevalence Of Animal Sentience, Antonio Damasio

Animal Sentience

Rowan et al use findings from neurobiology, clinical neurology, and general biology to argue for the extensive presence of sentience in animals, but they are wisely cautious concerning when in the phylogenetic scale that emergence occurred.


Motivated Science: What Humans Gain From Denying Animal Sentience, Uri Lifshin Jan 2022

Motivated Science: What Humans Gain From Denying Animal Sentience, Uri Lifshin

Animal Sentience

Resistance to the idea that non-human animals are sentient resembles erstwhile resistance to the theory that the earth is not the centre of the universe, or that humans evolved from “apes”. All these notions are psychologically threatening. They can remind people of their own creatureliness and mortality and might make them feel guilty or uncertain about their way of life. An honest debate over animal sentience, welfare and rights should consider the human motivation to deprive animals of these things in the first place. I briefly review empirical evidence on the psychological function of denying animal minds.


Legal Recognition Of Animal Sentience: The Case For Cautious Optimism, Jane Kotzmann Jan 2022

Legal Recognition Of Animal Sentience: The Case For Cautious Optimism, Jane Kotzmann

Animal Sentience

Rowan et al.’s target article provides a valuable indication of the work that was required to reach the point where animals are recognised as sentient in various laws. To ensure this work was not in vain, the language of sentience needs to be used as a moral currency to demand further cultural change involving greater human respect for animals.


Why Do Chapman & Huffman Think Humans Are Not Different?, Nick Zangwill Jan 2021

Why Do Chapman & Huffman Think Humans Are Not Different?, Nick Zangwill

Animal Sentience

This commentary discusses various shortcomings in Chapman & Huffman’s (2018) denial of differences between human beings and animals and the ethical consequences they think turn on this. Rationality is proposed as a candidate for such a difference, one that also has acceptable ethical consequences.


Consider The Agent In The Arthropod, Nicolas Delon, Peter Cook, Gordon Bauer, Heidi Harley Jul 2020

Consider The Agent In The Arthropod, Nicolas Delon, Peter Cook, Gordon Bauer, Heidi Harley

Animal Sentience

Whether or not arthropods are sentient, they can have moral standing. Appeals to sentience are not necessary and retard progress in human treatment of other species, including invertebrates. Other increasingly well-documented aspects of invertebrate minds are pertinent to their welfare. Even if arthropods are not sentient, they can be agents whose goals—and therefore interests—can be frustrated. This kind of agency is sufficient for moral status and requires that we consider their welfare.


Do Beetles Have Experiences? How Can We Tell?, Matt Cartmill Jul 2020

Do Beetles Have Experiences? How Can We Tell?, Matt Cartmill

Animal Sentience

We attribute consciousness to other humans because their anatomy and behavior resembles our own and their verbal descriptions of subjective experiences correspond to ours. Nonhuman mammals have somewhat humanlike behavior and anatomy, but without the verbal descriptions. Their sentience is therefore open to Cartesian doubt. Robot "minds" lack humanlike behavior and anatomy, and so their sentience is generally discounted no matter what sentences they generate. Invertebrates lack both neurological similarity and language. Although it may be safest in making moral judgments to assume that some invertebrates are sentient, cogent reasons for thinking so must await an objective causal explanation for …


Spineless And Sentient: A Challenge For Moral Comparison, Patrick Forber, Robert C. Jones Jul 2020

Spineless And Sentient: A Challenge For Moral Comparison, Patrick Forber, Robert C. Jones

Animal Sentience

We agree with Mikhalevich & Powell but take issue with their criteria for attributing sentience. This problem is connected with difficult issues concerning moral comparisons and evaluating moral decisions when interspecific moral interests conflict.


Avoiding Anthropocentrism In Evolutionarily Inclusive Ethics, Simon Fitzpatrick Jul 2020

Avoiding Anthropocentrism In Evolutionarily Inclusive Ethics, Simon Fitzpatrick

Animal Sentience

Mikhalevich & Powell are to be commended for challenging the “invertebrate dogma” that invertebrates are unworthy of ethical concern. However, developing an evolutionarily inclusive ethics requires facing some of the more radical implications of rejecting hierarchical scala naturae and human-centered conceptions of the biological world. In particular, we need to question the anthropocentric assumptions that still linger in discussions like these.


Zones Of Precaution, Jonathan Birch Jul 2020

Zones Of Precaution, Jonathan Birch

Animal Sentience

My commentary focusses on Mikhalevich & Powell’s criticisms of the Animal Sentience Precautionary Principle. I emphasize the pragmatic nature of my rationale for proposing that, rather than extending the scope of animal welfare protection on a species-by-species basis, we should be willing to protect entire Linnaean orders on the basis of evidence from a single species.


Brain Complexity, Sentience And Welfare, Donald M. Broom Jul 2020

Brain Complexity, Sentience And Welfare, Donald M. Broom

Animal Sentience

Neither sentience nor moral standing is confined to animals with large or human-like brains. Invertebrates deserve moral consideration. Definition of terms clarifies the relationship between sentience and welfare. All animals have welfare but humans give more protection to sentient animals. Humans should be less human-centred.


Convergent Evolution Of Sentience?, Culum Brown Prof. Jul 2020

Convergent Evolution Of Sentience?, Culum Brown Prof.

Animal Sentience

Mikhalevich & Powell make a compelling case that some invertebrates may be sentient and that our moral obligations in the context of welfare should hence extend to them. Although the case is similar to that made for fishes, there is one obvious difference in that examples of invertebrate sentience probably arose independently from vertebrate sentience. We have unequivocal proof that complex cognition arose multiple times over evolutionary history. Given that cognition is our best tool for indirectly quantifying sentience, it seems highly likely that this multiple polygenesis may also have occurred for sentience. In acknowledging this, we must accept that …


Moral Treatment For All, Eric Dietrich, Tara Fox Hall Jan 2020

Moral Treatment For All, Eric Dietrich, Tara Fox Hall

Animal Sentience

There is no way to include invertebrates within the moral sphere without being “extreme” — to use Mikhalevich & Powell’s term. This is because of the profound difficulties in correctly attributing sentience. This commentary argues that we have a moral duty to be extreme.


It Might Not Matter Very Much Whether Insects Are Conscious, Neil Levy Jan 2020

It Might Not Matter Very Much Whether Insects Are Conscious, Neil Levy

Animal Sentience

In common with most other authors, Mikhalevich & Powell assume that phenomenal consciousness is a “precondition” of moral standing. Although the evidence they present makes it much more likely than usually thought that arthropods are phenomenally conscious, scepticism in the face of this evidence remains intellectually respectable. I suggest that we best make progress here by rejecting the notion that phenomenal consciousness is necessary for moral standing. Mental states that may lack phenomenal properties can do a lot of work in grounding moral standing, and there is less room for scepticism about these mental states than about phenomenal consciousness.


Exploring Eight-Armed Intelligence Through Film, Tierney M. Thys Jan 2020

Exploring Eight-Armed Intelligence Through Film, Tierney M. Thys

Animal Sentience

Mather (2019) provides a rich overview of the elements underlying octopus cognition and behavioral flexibility. Recently, two remarkable natural history films, My Octopus Teacher and The Octopus in My House have explored intimate human-octopus relationships with a wild (Octopus vulgaris) and a captive octopus (Octopus cyanea) respectively. Both films show rare behaviors that offer observations to test new hypotheses as well as a novel perspective on our own human relationships and place within the natural world. An interview with filmmaker Craig Foster from My Octopus Teacher reveals the profound and transformative power of forming a trusting …


Cultured Meat Could Prevent The Next Pandemic, Jonathan Anomaly Jan 2020

Cultured Meat Could Prevent The Next Pandemic, Jonathan Anomaly

Animal Sentience

Wiebers & Feigin identify intensive agriculture and trade in exotic animals as the main sources of novel zoonotic viral infections. They recommend a transition away from meat. I would add that we would do well to invest in the mass production of cultured meat, derived from stem cells, as a radical alternative to animal agriculture.


Minds Without Spines: Evolutionarily Inclusive Animal Ethics, Irina Mikhalevich, Russell Powell Jan 2020

Minds Without Spines: Evolutionarily Inclusive Animal Ethics, Irina Mikhalevich, Russell Powell

Animal Sentience

Invertebrate animals are frequently lumped into a single category and denied welfare protections despite their considerable cognitive, behavioral, and evolutionary diversity. Some ethical and policy inroads have been made for cephalopod molluscs and crustaceans, but the vast majority of arthropods, including the insects, remain excluded from moral consideration. We argue that this exclusion is unwarranted given the existing evidence. Anachronistic readings of evolution, which view invertebrates as lower in the scala naturae, continue to influence public policy and common morality. The assumption that small brains are unlikely to support cognition or sentience likewise persists, despite growing evidence that arthropods …


Problems With Basing Insect Ethics On Individuals’ Welfare, Susana Monsó, Antonio J. Osuna-Mascaró Jan 2020

Problems With Basing Insect Ethics On Individuals’ Welfare, Susana Monsó, Antonio J. Osuna-Mascaró

Animal Sentience

In their target article, Mikhalevich & Powell (M&P) argue that we should extend moral protection to arthropods. In this commentary, we show that there are some unforeseen obstacles to applying the sort of individualistic welfare-based ethics that M&P have in mind to certain arthropods, namely, insects. These obstacles have to do with the fact that there are often many more individuals involved in our dealings with insects than our ethical theories anticipate, and also with the fact that, in some sense, some insects count as more than an individual and, in another sense, they sometimes count as less than an …


Sentience In Evolutionary Context, Jon Mallatt, Todd E. Feinberg Jan 2020

Sentience In Evolutionary Context, Jon Mallatt, Todd E. Feinberg

Animal Sentience

We appreciate the goals of Mikhalevich & Powell (M&P) and largely agree with their conclusions but we differ on some of their definitions and terms. Affects (emotional feelings) should be part of sentience. Although the evidence presented for insect sentience is strong, we list some of the counterevidence that should be considered. Our own research supports M&P’s choice of arthropods, cephalopods, and vertebrates as the only sentient organisms with moral status.