Human Superiority?,
2018
Colorado State University
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 …
Fish Sentience Denial: Muddying The Waters,
2018
University of Liverpool
Fish Sentience Denial: Muddying The Waters, Lynne U. Sneddon, Javier Lopez-Luna, David C.C. Wolfenden, Matthew C. Leach, Ana M. Valentim, Peter J. Steenbergen, Nabila Bardine, Amanda D. Currie, Donald M. Broom, Culum Brown
Animal Sentience
Recent empirical studies have reported evidence that many aquatic species, including fish, cephalopods and crustaceans, have the capacity for nociception and pain, and that their welfare should be taken into consideration. Some sceptics, rejecting the precautionary principle, have denied that any study demonstrates pain or other aspects of sentience in fish. This target article discusses some of the scientific shortcomings of these critiques through a detailed analysis of a study exploring nociception and analgesia in larval zebrafish.
Pain In Fish: Evidence From Peripheral Nociceptors To Pallial Processing,
2018
East Tennessee State University
Pain In Fish: Evidence From Peripheral Nociceptors To Pallial Processing, Michael L. Woodruff
Animal Sentience
The target article by Sneddon et al. (2018) presents convincing behavioral and pharmacological evidence that ray-finned fish consciously perceive noxious stimuli as painful. One objection to this interpretation of the evidence is that the fish nervous system is not complex enough to support the conscious experience of pain. Data that contradict this objection are presented in this commentary. The neuroanatomy and neurophysiology of the fish nervous system from the peripheral nerves to the pallium is able to support the sentient appreciation of pain.
Sentience, The Final Frontier....,
2018
Dalhousie University
Sentience, The Final Frontier...., Shelley Adamo
Animal Sentience
Arguments for fish sentience have difficulty with the philosophical zombie problem. Progress in AI has shown that complex learning, pain behavior, and pain as a motivational drive can be emulated by robots without any internal subjective experience. Therefore, demonstrating these abilities in fish does not necessarily demonstrate that fish are sentient. Further evidence for fish sentience may come from optogenetic studies of neural networks in zebrafish. Such studies may show that zebrafish have neural network patterns similar to those that correlate with sentience in humans. Given the present uncertainty regarding sentience in fish, caution should be applied regarding the precautionary …
Fish Sentience Denial: Muddy Moral Water,
2018
California State University - Chico
Fish Sentience Denial: Muddy Moral Water, Robert C. Jones
Animal Sentience
Sneddon et al. (2018) authoritatively summarize the compelling and overwhelming evidence for fish sentience, while methodically dismantling one rather emblematic research paper (Diggles et al. 2017) intended to discount solid evidence of fish sentience (Lopez-Luna et al. 2017a, 2017b, 2017c, & 2017d). I explore the larger practical moral contexts within which these debates take place and argue that denials of animal sentience are really moral canards.
Fish And Plant Sentience: Anesthetized Plants And Fishes Cannot Respond To Stimuli,
2018
Utsunomiya University
Fish And Plant Sentience: Anesthetized Plants And Fishes Cannot Respond To Stimuli, Ken Yokawa, František Baluška
Animal Sentience
Recent denial of fish sentience is at variance with the fact that all living organisms need environmental awareness in order to survive in a continuously fluctuating environment. Moreover, fish sentience – like plant sentience – is also strongly supported by the sensitivity of fishes and plants to diverse anesthetics.
If It Looks Like A Duck: Fish Fit The Criteria For Pain Perception,
2018
Ripon College
If It Looks Like A Duck: Fish Fit The Criteria For Pain Perception, Julia E. Meyers-Manor
Animal Sentience
Whereas we have denied the experience of pain to animals, including human babies, the evidence is becoming clearer that animals across a variety of species have the capacity to feel pain (Bellieni, 2012). As converging findings are collected from pain studies and the study of cognition, it is becoming harder to deny that fish are among the species that do feel pain.
Defining Denial And Sentient Seafood,
2018
New York University
Defining Denial And Sentient Seafood, Jennifer Jacquet
Animal Sentience
Sneddon et al. address the scientists who reject the empirical evidence on fish sentience, calling them “sceptics” and their work “denial”. This is the first article to frame the question of fish sentience in these terms, and it provides an obvious opening for social science and humanities research in the science of fish sentience. It is also worth asking what practical changes in the lives of fish might arise from the mounting evidence of their sentience. I suggest that the relationship between sentience and our sense of moral obligation is not as clear as we often assume.
Sentience: All Or None Or Matter Of Degree?,
2018
University of Toronto
Sentience: All Or None Or Matter Of Degree?, Loren Martin, Robert Gerlai
Animal Sentience
The question of whether fish feel pain is muddied by anthropomorphic thinking. Comparing biological phenomena in two species should be informed by the criteria for good animal models: face validity, construct validity and predictive validity. Viewed through this lens, we argue that fish do feel pain and may possess some level of sentience. Evolutionary relatedness, hence similarities and differences between species (fish and humans in this case), are not about black vs. white but about shades of grey.
The Human Nervous System Is Not The Gold Standard For Pain,
2018
IULM University
The Human Nervous System Is Not The Gold Standard For Pain, Riccardo Manzotti
Animal Sentience
The basis of pain could be the causal nexus between one’s phylogenetic/ontogenetic history and one’s behavior. It might turn out that the neural implementation is immaterial to the instantiation of pain. Widely different neural structures may token the same pain-type, and nearly identical neural structures may token different types.
Defining Pain And Painful Sentience In Animals,
2018
University of Texas Health Science Center at Houston
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 …
Fish Are Smart And Feel Pain: What About Joy?,
2018
New York University
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,
2018
University of Liverpool
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.
A Defense Of Epistemic Invariantism And Intellectualism,
2018
Wayne State University
A Defense Of Epistemic Invariantism And Intellectualism, Lucas Lockard
Wayne State University Dissertations
The traditional view of knowledge includes two plausible claims. The first claim is that the truth-conditions required to know some proposition p do not vary. So, for any two subjects who have the same epistemic position regarding p, either both know that p or both do not know that p. An implication of this invariantist position is that any difference in knowledge will be explained by a difference in their epistemic position. The second claim is that only epistemic or ‘truth-conducive’ reasons are relevant to considerations of knowledge. This intellectualist position has recently come under attack from those who argue …
Why Humans Are Different,
2018
Independent Scholar
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.
Two Fallacies In Comparisons Between Humans And Non-Humans,
2018
University College Cork; University of Cape Town; Georgia State University
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.
Anthropocentrism As Cognitive Dissonance In Animal Research?,
2018
Illinois Wesleyan University
Anthropocentrism As Cognitive Dissonance In Animal Research?, Ellen Furlong, Zachary Silver, Jack Furlong
Animal Sentience
Harmon-Jones et al. (2017) make a thought-provoking suggestion in their commentary on Zentall (2016): Overlooked biases among researchers on animal cognition might lead them to discount the traces of higher-order cognition in animals they study. We find the suggestion both philosophically important and worth further reflection for animal scientists. Harmon-Jones et al. point to two “cognitive dissonance” biases involving the clash between the common human resistance to viewing ourselves as animals/meat-eaters and how these biases might lead to discounting possible advanced cognitive performances in the animals studied. We show how these biases might appear in cognitive research generally and argue …
Fish Consciousness,
2018
Middlesex University, U.K.
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.
Denialism And Muddying The Water Or Organized Skepticism And Clarity? That Is The Question,
2018
DigsFish Services
Denialism And Muddying The Water Or Organized Skepticism And Clarity? That Is The Question, Ben Diggles, Howard I. Browman
Animal Sentience
The research being commented on here has been criticized and defended in journals. Sneddon et al. (2018) add nothing substantive. We have nothing further to add. Readers are referred to Diggles (2018) and to Browman et al. (2018) for a detailed assessment.
Nocifensive Behavior As Evidence For Sentient Pain In Fish,
2018
Universidade Federal Do Sul e Sudeste do Pará
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.
