Punishment in animal societies
Abstract
Although positive reciprocity (reciprocal altruism) has been a focus of interest in evolutionary biology, negative reciprocity (retaliatory infliction of fitness reduction) has been largely ignored. In social animals, retaliatory aggression is common, individuals often punish other group members that infringe their interests, and punishment can cause subordinates to desist from behaviour likely to reduce the fitness of dominant animals. Punishing strategies are used to establish and maintain dominance relationships, to discourage parasites and cheats, to discipline offspring or prospective sexual partners and to maintain cooperative behaviour.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
The study's results are inconsistent with the hypothesis that food sharing between non-kin is caused by manipulation, particularly harassment via persistent begging, in which only recipients gain benefits.
“Our results are inconsistent with the hypothesis that food sharing between non-kin is caused by manipulation, particularly through harassment via persistent begging [47,55], whereby only recipients gain benefits [6,71].”
From Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees (2014) · cites this paper as [71]
Cites
Axelrod, R., & Hamilton, W. D. (1981) · Science · doi:10.1126/science.7466396 · Cited by 20,065 · see citing works
The Evolution of Reciprocal Altruism
Trivers, R. L. (1971) · The Quarterly Review of Biology · doi:10.1086/406755 · Cited by 11,010 · see citing works
Schelling, T. C. (1960) · Cited by 7,691 · see citing works
Evolution and the theory of games
Smith, J. M. (1976) · Springer eBooks · doi:10.1007/978-1-4684-7862-4_22 · Cited by 7,369 · see citing works
Evolution and the Theory of Games
Smith, J. M. (1982) · Cambridge University Press eBooks · doi:10.1017/cbo9780511806292 · Cited by 6,918 · see citing works
Nielsen, R. P., & Axelrod, R. (1985) · Academy of Management Review · doi:10.2307/257983 · Cited by 6,517 · see citing works
Smith, J., & Price, G. R. (1973) · Nature · doi:10.1038/246015a0 · Cited by 6,423 · see citing works
Trivers, R. L. (1974) · American Zoologist · doi:10.1093/icb/14.1.249 · Cited by 4,210 · see citing works
Red Deer. Behavior and Ecology of Two Sexes
Watson, A., Clutton-Brock, T. H., GUINNESS, F. E., & Albon, S. D. (1983) · Journal of Animal Ecology · doi:10.2307/4471 · Cited by 2,460 · see citing works
Self-citationThe theory of games and the evolution of animal conflicts
Maynard Smith, J. (1974) · Journal of Theoretical Biology · doi:10.1016/0022-5193(74)90110-6 · Cited by 2,410 · see citing works
How Monkeys See the World: Inside the Mind of Another Species
Cheney, D. L., & Seyfarth, R. M. (1990) · doi:10.7208/chicago/9780226218526.001.0001 · Cited by 2,268 · see citing works
An Evolutionary Approach to Norms
Axelrod, R. (1986) · American Political Science Review · doi:10.2307/1960858 · Cited by 2,192 · see citing works
Assessment strategy and the evolution of fighting behaviour.
Parker, G. A. (1974) · Journal of Theoretical Biology · doi:10.1016/0022-5193(74)90111-8 · Cited by 2,055 · see citing works
Self-citationThe logic of asymmetric contests
Smith, J. M., & Parker, G. A. (1976) · Animal Behaviour · doi:10.1016/s0003-3472(76)80110-8 · Cited by 1,928 · see citing works
Self-citationPunishment allows the evolution of cooperation (or anything else) in sizable groups
Boyd, R., & Richerson, P. J. (1992) · Ethology and Sociobiology · doi:10.1016/0162-3095(92)90032-y · Cited by 1,482 · see citing works
The provision of a sanctioning system as a public good.
Yamagishi, T. (1986) · Journal of Personality and Social Psychology · doi:10.1037/0022-3514.51.1.110 · Cited by 1,359 · see citing works
Tit for tat in heterogeneous populations
Nowak, M. A., & Sigmund, K. (1992) · Nature · doi:10.1038/355250a0 · Cited by 1,029 · see citing works
Coalitions and Alliances in Humans and Other Animals.
Dunbar, R., Harcourt, A. H., & de Waal, F. Β. Μ. (1993) · Man · doi:10.2307/2803426 · Cited by 968 · see citing works
Selfish and Spiteful Behaviour in an Evolutionary Model
Hamilton, W. D. O. (1970) · Nature · doi:10.1038/2281218a0 · Cited by 872 · see citing works
The logical stag: Adaptive aspects of fighting in red deer (Cervus elaphus L.)
Clutton-Brock, T. H., Albon, S. D., Gibson, R. M., & GUINNESS, F. E. (1979) · Animal Behaviour · doi:10.1016/0003-3472(79)90141-6 · Cited by 800 · see citing works
Self-citationA model for the evolution of despotic versus egalitarian societies
Vehrencamp, S. L. (1983) · Animal Behaviour · doi:10.1016/s0003-3472(83)80222-x · Cited by 798 · see citing works
Smuts, B. B., & Smuts, R. W. (1993) · Advances in the study of behavior · doi:10.1016/s0065-3454(08)60404-0 · Cited by 757 · see citing works
Smuts, B. B. (2017) · Routledge eBooks · doi:10.4324/9781315129204 · Cited by 756 · see citing works
Reproductive Harmony via Mutual Policing by Workers in Eusocial Hymenoptera
Ratnieks, F. L. W. (1988) · The American Naturalist · doi:10.1086/284846 · Cited by 728 · see citing works
Helping Communal Breeding in Birds
Brown, J. L. (1987) · Princeton University Press eBooks · doi:10.1515/9781400858569 · Cited by 654 · see citing works
de Waal, F. (2009) · Harvard University Press eBooks · doi:10.2307/j.ctvjz820k · Cited by 649 · see citing works
de Waal, F. Β. Μ., & de Waal, F. Β. Μ. (1989) · Harvard University Press eBooks · doi:10.4159/9780674033085 · Cited by 571 · see citing works
Rewards and Punishments as Selective Incentives for Collective Action: Theoretical Investigations
Oliver, P. E. (1980) · American Journal of Sociology · doi:10.1086/227168 · Cited by 562 · see citing works
Role assessment, reserve strategy, and acquisition of information in asymmetric animal conflicts
Parker, G. A., & Rubenstein, D. I. (1981) · Animal Behaviour · doi:10.1016/s0003-3472(81)80170-4 · Cited by 522 · see citing works
Self-citationReciprocal altruism in Papio anubis
Packer, C. (1977) · Nature · doi:10.1038/265441a0 · Cited by 519 · see citing works
Biological bases of human social behaviour
Hinde, R. A. (1974) · Andalas University Repository (Andalas University) · Cited by 505 · see citing works
Huntingford, F. A., & Turner, A. K. (1987) · Springer eBooks · doi:10.1007/978-94-009-3145-9 · Cited by 504 · see citing works
Female primates: Studies by women primatologists
Datta, S. (1985) · Ethology and Sociobiology · doi:10.1016/0162-3095(85)90032-9 · Cited by 456 · see citing works
Cooperation in a repeated prisoners' dilemma with ostracism
Hirshleifer, D. A., & Rasmusen, E. (1989) · Journal of Economic Behavior & Organization · doi:10.1016/0167-2681(89)90078-4 · Cited by 376 · see citing works
(1994) · Choice Reviews Online · doi:10.5860/choice.31-2688 · Cited by 372 · see citing works
de Waal, F. Β. Μ., & Luttrell, L. M. (1988) · Ethology and Sociobiology · doi:10.1016/0162-3095(88)90016-7 · Cited by 369 · see citing works
Hoebel, E. A. (1954) · Harvard University Press eBooks · doi:10.4159/9780674038707 · Cited by 359 · see citing works
The role of asymmetries in animal contests
Hammerstein, P. (1981) · Animal Behaviour · doi:10.1016/s0003-3472(81)80166-2 · Cited by 355 · see citing works
Northern elephant seal development: The transition from weaning to nutritional independence
Reiter, J., Stinson, N. L., & Bœuf, B. J. L. (1978) · Behavioral Ecology and Sociobiology · doi:10.1007/bf00303199 · Cited by 301 · see citing works
The behaviour of the domestic fowl
Wood-Gush, D. G. M. (1971) · Medical Entomology and Zoology · Cited by 244 · see citing works
Sex and Friendship in Baboons.
Sprey, J., & Smuts, B. B. (1987) · Contemporary Sociology A Journal of Reviews · doi:10.2307/2069959 · Cited by 244 · see citing works
Female competition and reproductive success in northern elephant seals
Reiter, J., Panken, K. J., & Bœuf, B. J. L. (1981) · Animal Behaviour · doi:10.1016/s0003-3472(81)80002-4 · Cited by 235 · see citing works
Costs of deception: cheaters are punished in rhesus monkeys (Macaca mulatta).
HAUSER, M. D. (1992) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.89.24.12137 · Cited by 222 · see citing works
Human sexual aggression: current perspectives.
PRENTKY, R. A., & Quinsey, V. L. (1988) · PubMed · Cited by 220 · see citing works
Passing the buck: resource defence, lek breeding and mate choice in fallow deer
Clutton-Brock, T. H., Green, D., Hiraiwa‐Hasegawa, M., et al. (1988) · Behavioral Ecology and Sociobiology · doi:10.1007/bf00300575 · Cited by 216 · see citing works
Self-citationOrder and Dispute: An Introduction to Legal Anthropology
Hamnett, I., & Roberts, S. (1979) · RAIN · doi:10.2307/3031894 · Cited by 212 · see citing works
The recognition of social alliances by vervet monkeys
Cheney, D. L., & Seyfarth, R. M. (1986) · Animal Behaviour · doi:10.1016/s0003-3472(86)80259-7 · Cited by 211 · see citing works
Models of parent-offspring conflict. I. Monogamy
Parker, G. A., & Macnair, M. R. (1978) · Animal Behaviour · doi:10.1016/0003-3472(78)90009-x · Cited by 206 · see citing works
Self-citationPerspectives in Primate Biology
Blackith, R. E., ASHTON, E. H., & Holmes, R. L. (1982) · Biometrics · doi:10.2307/2530320 · Cited by 201 · see citing works
Dominant males punish helpers for temporary defection in superb fairy-wrens
Mulder, R. A., & Langmore, N. E. (1993) · Animal Behaviour · doi:10.1006/anbe.1993.1100 · Cited by 198 · see citing works
Brood Parasitism within Species
Andersson, M. (1984) · Springer eBooks · doi:10.1007/978-1-4615-9784-1_8 · Cited by 197 · see citing works
The orang utan. Its biology and conservation
(1983) · Biological Conservation · doi:10.1016/0006-3207(83)90018-6 · Cited by 179 · see citing works
Queen activation of lazy workers in colonies of the eusocial naked mole-rat
Reeve, H. K. (1992) · Nature · doi:10.1038/358147a0 · Cited by 176 · see citing works
What Strategies Can Support the Evolutionary Emergence of Cooperation?
Hirshleifer, J., & Coll, J. C. M. (1988) · Journal of Conflict Resolution · doi:10.1177/0022002788032002006 · Cited by 174 · see citing works
Social Rank and Food Access in Red Deer Stags
Appleby, M. C. (1980) · Behaviour · doi:10.1163/156853980x00519 · Cited by 173 · see citing works
Sexual Behavior of Male Northern Elephant Seals: I. Lethal Injuries To Adult Females
Bœuf, B. J. L., & Mesnick, S. L. (1991) · Behaviour · doi:10.1163/156853990x00400 · Cited by 170 · see citing works
Redirected Aggression and Reconciliation Among Vervet Monkeys, Cercopithecus Aethiops
Cheney, D. L., & Seyfarth, R. M. (1989) · Behaviour · doi:10.1163/156853989x00501 · Cited by 164 · see citing works
Female primates: Studies by women primatologists
Small, M. F. (1984) · Medical Entomology and Zoology · Cited by 156 · see citing works
HAUSER, M. D., & Marler, P. (1993) · Behavioral Ecology · doi:10.1093/beheco/4.3.206 · Cited by 152 · see citing works
Dugatkin, L. A., Mesterton‐Gibbons, M., & Houston, A. I. (1992) · Trends in Ecology & Evolution · doi:10.1016/0169-5347(92)90074-l · Cited by 152 · see citing works
Dyadic and triadic reconciliation in pigtail macaques (Macaca nemestrina)
Judge, P. G. (1991) · American Journal of Primatology · doi:10.1002/ajp.1350230403 · Cited by 131 · see citing works
Kin-oriented redirection among Japanese macaques: an expression of a revenge system?
Aureli, F., Cozzolino, R., Cordischi, C., et al. (1992) · Animal Behaviour · doi:10.1016/0003-3472(92)90034-7 · Cited by 129 · see citing works
(1984) · Springer eBooks · doi:10.1007/978-1-4615-9784-1 · Cited by 128 · see citing works
Gerontocracy in the social wasp, Polistes exclamans
Strassmann, J. E., & Meyer, D. C. (1983) · Animal Behaviour · doi:10.1016/s0003-3472(83)80063-3 · Cited by 126 · see citing works
Ansell, W. F. H. (1964) · Nature · doi:10.1038/2021032a0 · Cited by 119 · see citing works
Measuring female mate choice in Cayo Santiago rhesus macaques
Manson, J. H. (1992) · Animal Behaviour · doi:10.1016/0003-3472(92)90051-a · Cited by 116 · see citing works
Reeve, H. K., & Gamboa, G. J. (1987) · Behaviour · doi:10.1163/156853986x00090 · Cited by 114 · see citing works
Training siblings to be submissive losers: dominance between booby nestlings
Drummond, H., & Osorno, J. L. (1992) · Animal Behaviour · doi:10.1016/s0003-3472(05)80584-6 · Cited by 114 · see citing works
(1963) · The Lancet · doi:10.1016/s0140-6736(63)90696-2 · Cited by 104 · see citing works
Social contracts in wasp societies
Reeve, H. K., & Nonacs, P. (1992) · Nature · doi:10.1038/359823a0 · Cited by 102 · see citing works
Reeve, H. K., & Gamboa, G. J. (1983) · Behavioral Ecology and Sociobiology · doi:10.1007/bf00295077 · Cited by 93 · see citing works
Brood reduction and brood division in coots
Horsfall, J. A. (1984) · Animal Behaviour · doi:10.1016/s0003-3472(84)80340-1 · Cited by 86 · see citing works
Rowell, T. E. (1973) · Cited by 77 · see citing works
Kin and non-kin interventions in the aggressive disputes of vervet monkeys
Hunte, W., & Horrocks, J. A. (1987) · Behavioral Ecology and Sociobiology · doi:10.1007/bf00292178 · Cited by 66 · see citing works
Male aggression: a cost of female mate choice in Cayo Santiago rhesus macaques
Manson, J. H. (1994) · Animal Behaviour · doi:10.1006/anbe.1994.1262 · Cited by 62 · see citing works
A Pure Theory of Strategic Behavior and Social InstitutionsPreprint
Thompson, E. A., & Faith, R. L. (1980) · RePEc: Research Papers in Economics · Cited by 47 · see citing works
Rank Relations in Vervet Sisters: A Critique of the Role of Reproductive Value
Horrocks, J. A., & Hunte, W. (1983) · The American Naturalist · doi:10.1086/284144 · Cited by 46 · see citing works
Male aggression and the sexual behavior of Japanese monkeys
Enomoto, T. (1981) · Primates · doi:10.1007/bf02382553 · Cited by 44 · see citing works
Parent-offspring aggression in moorhens
Leonard, M. L., Horn, A. G., & Eden, S. F. (1988) · Behavioral Ecology and Sociobiology · doi:10.1007/bf00302949 · Cited by 42 · see citing works
Sex Differences in Mortality among Langurs (Presbytis entellus) of Jodhpur, Rajasthan
Rajpurohit, L. S., & Sommer, V. (1991) · Folia Primatologica · doi:10.1159/000156523 · Cited by 40 · see citing works
Harassment of sexual interactions among stumptail macaques, Macaca arctoides
Drukker, B., Nieuwenhuijsen, K., ten Bosch, J. J. V. D. W., et al. (1991) · Animal Behaviour · doi:10.1016/s0003-3472(05)80548-2 · Cited by 21 · see citing works
Influence of Male Aggression on Mating of Gorillas in the Laboratory
Nadler, R. D., & Miller, L. C. (1982) · Folia Primatologica · doi:10.1159/000156059 · Cited by 20 · see citing works
Gender-related behaviors in group-living stumptail macaques
Nieuwenhuijsen, K., Slob, A. K., & ten Bosch, J. J. V. D. W. (1988) · Psychobiology · doi:10.3758/bf03327333 · Cited by 20 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Five Rules for the Evolution of Cooperation
Nowak, M. A. (2006) · Science · doi:10.1126/science.1133755 · Cited by 5,894 · see citing works
Altruistic punishment in humans
Fehr, E., & Gächter, S. (2002) · Nature · doi:10.1038/415137a · Cited by 5,616 · see citing works
Antisocial Punishment Across Societies
Herrmann, B., Thöni, C., & Gächter, S. (2008) · Science · doi:10.1126/science.1153808 · Cited by 2,038 · see citing works
Social semantics: altruism, cooperation, mutualism, strong reciprocity and group selection.
WEST, S. A., GRIFFIN, A. S., & GARDNER, A. (2007) · Journal of Evolutionary Biology · doi:10.1111/j.1420-9101.2006.01258.x · Cited by 1,889 · see citing works
The evolution of altruistic punishment
Boyd, R., Gintis, H., Bowles, S., & Richerson, P. J. (2003) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0630443100 · Cited by 1,748 · see citing works
Cooperation between non-kin in animal societies
Clutton-Brock, T. (2009) · Nature · doi:10.1038/nature08366 · Cited by 951 · see citing works
Self-citationDreber, A., Rand, D. G., Fudenberg, D., & Nowak, M. A. (2008) · Nature · doi:10.1038/nature06723 · Cited by 718 · see citing works
To give and to give not: the behavioral ecology of human food transfers
Gurven, M. (2004) · Behavioral and Brain Sciences · doi:10.1017/s0140525x04000123 · Cited by 582 · see citing works
Monoamine oxidase A gene (MAOA) predicts behavioral aggression following provocation
McDermott, R., Tingley, D., Cowden, J., Frazzetto, G., & Johnson, D. D. P. (2009) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0808376106 · Cited by 384 · see citing works
Johnson, D. D. P. (2005) · Human Nature · doi:10.1007/s12110-005-1017-0 · Cited by 323 · see citing works
Hand of God, Mind of Man: Punishment and Cognition in the Evolution of Cooperation
Johnson, D., & Bering, J. (2006) · Evolutionary Psychology · doi:10.1177/147470490600400119 · Cited by 294 · see citing works
Anti-social punishment can prevent the co-evolution of punishment and cooperation
Rand, D. G., Armao IV, J. J., Nakamaru, M., & Ohtsuki, H. (2010) · Journal of Theoretical Biology · doi:10.1016/j.jtbi.2010.06.010 · Cited by 233 · see citing works
Wittig, R. M., Crockford, C., Deschner, T., Langergraber, K. E., Ziegler, T. E., & Zuberbühler, K. (2014) · Proceedings of the Royal Society B: Biological Sciences · doi:10.1098/rspb.2013.3096 · Cited by 235 · see citing works
A conceptual framework for nonkin food sharing: timing and currency of benefits
Stevens, J. R., & Gilby, I. C. (2004) · Animal Behaviour · doi:10.1016/j.anbehav.2003.04.012 · Cited by 176 · see citing works
Effectiveness of conditional punishment for the evolution of public cooperation
Szolnoki, A., & Perc, M. (2013) · Journal of Theoretical Biology · doi:10.1016/j.jtbi.2013.02.008 · Cited by 173 · see citing works
Hormonal mechanisms of cooperative behaviour
Soares, M. C., Bshary, R., Fusani, L., Goymann, W., Hau, M., Hirschenhauser, K., & Oliveira, R. F. (2010) · Philosophical Transactions of the Royal Society B: Biological Sciences · doi:10.1098/rstb.2010.0151 · Cited by 173 · see citing works
Revenge: a multilevel review and synthesis
Jackson, J. C., Choi, V. K., & Gelfand, M. J. (2019) · Annual Review of Psychology · doi:10.1146/annurev-psych-010418-103305 · Cited by 172 · see citing works
Wu, J., Balliet, D., Peperkoorn, L. S., Romano, A., & Van Lange, P. A. M. (2020) · Frontiers in Psychology · doi:10.3389/fpsyg.2019.02956 · Cited by 156 · see citing works
Cooperation and competition in chimpanzees: Current understanding and future challenges
Mitani, J. C. (2009) · Evolutionary Anthropology: Issues, News, and Reviews · doi:10.1002/evan.20229 · Cited by 156 · see citing works
From reciprocity to unconditional altruism through signalling benefits
Lotem, A., Fishman, M. A., & Stone, L. (2003) · Proceedings of the Royal Society of London. Series B: Biological Sciences · doi:10.1098/rspb.2002.2225 · Cited by 104 · see citing works
Prosocial behaviour emerges independent of reciprocity in cottontop tamarins
Cronin, K. A., Schroeder, K. K. E., & Snowdon, C. T. (2010) · Proceedings of the Royal Society B Biological Sciences · doi:10.1098/rspb.2010.0879 · Cited by 103 · see citing works
Third-party punishers are rewarded, but third-party helpers even more so
Raihani, N. J., & Bshary, R. (2015) · Evolution · doi:10.1111/evo.12637 · Cited by 101 · see citing works
Machiavellian Intelligence in Fishes
Bshary, R. (2011) · Fish Cognition and Behavior · doi:10.1002/9781444342536.ch13 · Cited by 72 · see citing works
Partner choice versus punishment in human Prisoner’s Dilemmas
Barclay, P., & Raihani, N. (2016) · Evolution and Human Behavior · doi:10.1016/j.evolhumbehav.2015.12.004 · Cited by 67 · see citing works
Taking charge and stepping in: Individuals who punish are rewarded with prestige and dominance
Redhead, D., Dhaliwal, N., & Cheng, J. T. (2021) · Social and Personality Psychology Compass · doi:10.1111/spc3.12581 · Cited by 53 · see citing works
Enactment of Third-Party Punishment by 4-Year-Olds
Kenward, B., & Östh, T. (2012) · Frontiers in Psychology · doi:10.3389/fpsyg.2012.00373 · Cited by 46 · see citing works
Turiel, E., & Dahl, A. (2019) · The Normative Animal? · doi:10.1093/oso/9780190846466.003.0010 · Cited by 34 · see citing works
Salahshour, M., Oberhauser, V., & Smerlak, M. (2022) · PLOS ONE · doi:10.1371/journal.pone.0263028 · Cited by 9 · see citing works
- Authors
- Clutton-Brock, T. H., & Parker, G. A.
- Affiliations
- University of Cambridge (GB)
- University of Liverpool (GB)
- Venue
- Nature
- Published
- 1995-01-19
- Volume
- 373
- Issue
- 6511
- Pages
- 209-216
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W2057489914
- Cited by
- 1,043
- References
- 83
- Citations by year
- 2026: 24 · 2025: 31 · 2024: 23 · 2023: 36 · 2022: 37 · 2021: 37 · 2020: 29 · 2019: 60 · 2018: 26 · 2017: 46 · 2016: 48 · 2015: 45 · 2014: 41 · 2013: 47 · 2012: 62
- FWCI
- 2.85
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Nature (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
- Social Sciences › Sociology and Political Science › Evolutionary Game Theory and Cooperation
- Social Sciences › Psychology › Social Psychology › Primate Behavior and Ecology
- Keywords
- punishment, negative reciprocity, reactive aggression, reciprocal altruism, dominance relations, cheating, parasites, cooperation, social animals
- MeSH terms
- Aggression, Animals, Cooperative Behavior, Biological Evolution, Female, Game Theory, Humans, Male, Predatory Behavior, Punishment, Reproduction, Social Dominance
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review