Facial width-to-height ratio in chimpanzees: Links to age, sex and personality
Evolution and Human Behavior
Color discrimination and color preferences in Chimpanzees (Pan troglodytes)
WISH cages: constructing multiple habitats for captive chimpanzees
Pretense in chimpanzees
The Lisu people's traditional natural philosophy and its potential impact on conservation planning in the Laojun Mountain region, Yunnan Province, China
How to measure chimpanzee party size? A methodological comparison
The macronutrient composition of wild and cultivated plant foods of West African chimpanzees (Pan troglodytes verus) inhabiting an anthropogenic landscape
American Journal of Primatology, 82(3): e23102
Investigating the function of mutual grooming in captive bonobos (Pan paniscus) and chimpanzees (Pan troglodytes)
Social influences on grooming site preferences in wild bonobos (Pan paniscus) at Wamba, DRC
Chimpanzee face recognition from videos in the wild using deep learning
Bhutan: environmental education and Gross National Happiness (GNH)
Primates, Volume 60, Issue 2, pp 103-108
Horses and nomads in Mongolia
Iriomote island: ecology of a subtropical island in Japan
Primates, Volume 60, Issue 1, pp 1-3
Chimpanzees foraging on aquatic foods: algae scooping in Bossou
Primates, 60(4): 317-319
Bornean orangutans: primary forest in Danum Valley and rehabilitation program on Orangutan Island
Primates, 60(6): 477-483
Modeling habitat suitability for Yunnan Snub-nosed monkeys in Laojun Mountain National Park
Crab-fishing by chimpanzees in the Nimba Mountains, Guinea
Journal of Human Evolution, 133:230-241
Longevity and mortality of captive chimpanzees in Japan from 1921 to 2018
Behaviour of nonhuman primate mothers toward their dead infants: uncovering mechanisms
Philosophical Transactions of the Royal Society B, 373: 20170261
Touch-screen-guided task reveals a prosocial choice tendency by chimpanzees (Pan troglodytes)
World Chimpanzee Day and the Ai’s Scarf Award
Primates, Volume 59, Issue 5, pp 409-412
Gorongosa and Sasagamine: intra-species behavioral variation in baboons and Japanese monkeys
Primates, Volume 59, Issue 6, pp 495-497
Chimpanzee Velu: the wild chimpanzee who passed away at the estimated age of 58
Primates, 59(2): 107-111
Primatology: the beginning
Primates, Volume 59, Issue 4, pp 313-326
Hot-spring bathing of wild monkeys in Shiga-Heights: origin and propagation of a cultural behavior
Primates, 59(3): 209-213
Learning the rules of the rock-paper-scissors game: chimpanzees versus children
Primates, 59(1): 7-17
Modeling habitat suitability for chimpanzees (Pan troglodytes verus) in the Greater Nimba Landscape, Guinea, West Africa
Primates, Volume 59, Issue 4, pp 361-375
Chimpanzee Personality and the Arginine Vasopressin Receptor 1A Genotype
Behavior Genetics, Volume 47, Issue 2, pp 215-226
Direct estimation of de novo mutation rates in a chimpanzee parent-offspring trio by ultra-deep whole genome sequencing
Scientific Reports, 7. 13561
Developmental trajectory of the corpus callosum from infancy to the juvenile stage: Comparative MRI between chimpanzees and humans
PLoS ONE, 12(6): e0179624
Comparison of the social systems of primates and feral horses: data from a newly established horse research site on Serra D’Arga, northern Portugal
Primates, Volume 58, Issue 4, pp 479-484
Tube task hand preference in captive Hylobatids
Primates, 58(3): 403-412
Development and behavior of wild infant-juvenile East Bornean orangutans (Pongo pygmaeus morio) in Danum Valley
Primates, Volume 58, Issue 1, pp 211-224
The 40th anniversary of the Ai Project: the commemorative gift is a silk scarf painted by Ai the chimpanzee
Primates, Volume 58, Issue 2, pp 261-265
Horse cognition and behavior from the perspective of primatology
Primates, Volume 58, Issue 4, pp 473-477
Parabolic flight: experiencing zero gravity to envisage the future of human evolution
Primates, 59(1): 1-3
The Nimba Mountains in Guinea
Primates, Volume 58, Issue 1, pp 1-3
Chimpanzees spontaneously take turns in a shared serial ordering task
Scientific Reports, 7, 14307
Mother-infant interactions in captive and wild chimpanzees
Infant Behavior and Development, Volume 48, Part A, Pages 20-29
Primate archaeology evolves
Nature Ecology & Evolution, 1, 1431-1437
Activity and Habitat Use of Chimpanzees (Pan troglodytes verus) in the Anthropogenic Landscape of Bossou, Guinea, West Africa
International Journal of Primatology, Volume 38, Issue 2, pp 282-302
Impaired Air Conditioning within the Nasal Cavity in Flat-Faced Homo
PLoS Computational Biology, 12(3): e1004807
Behavioral and physiological changes in a juvenile Bornean orangutan after a wildlife rescue
Global Ecology and Conservation, 8:116-122
From four hands to two feet: human evolution in the context of primate evolution
Primates, 57(2): 137-139
Euthanasia is not an option: 10 years’ care of a chimpanzee with acute tetraparesis
Primates, 57(3), 291-293
Mountain day: isomorphism of mountaineering and science
Primates, Volume 57, Issue 4, pp 441-444
Dispersal of a Human-Cultivated Crop by Wild Chimpanzees (Pan troglodytes verus) in a Forest-Farm Matrix
International Journal of Primatology, Volume 38, Issue 2, pp 172-193
Nut Cracking Tools Used by Captive Chimpanzees (Pan troglodytes) and Their Comparison with Early Stone Age Percussive Artefacts from Olduvai Gorge
PLoS ONE, 11(11): e0166788
A horse's eye view: size and shape discrimination compared with other mammals
Biology Letters, 11: 20150701
Emergence of infectious malignant thrombocytopenia in Japanese macaques (Macaca fuscata) by SRV-4 after transmission to a novel host
Scientific reports, 5. 8850
Seventy years after the end of World War II
Primates, 56(2): 105-106
New editorial board 2015-2017
Primates, 56(1): 1-1
Sumatran orangutans and the World War II
Primates, 56(3): 207-209
Sweet-potato washing revisited: 50th anniversary of the Primates article
Primates, 56(4): 285-287
SAGA and GAIN for great apes.
Primates, 57(1): 1-2
Social grooming network in captive chimpanzees: does the wild or captive origin of group members affect sociality?
Primates, Volume 57, Issue 1, pp 73-82
Chimpanzees prey on army ants at Seringbara, Nimba Mountains, Guinea: Predation patterns and tool use characteristics
American Journal of Primatology, 77:319-329
Apes in the Anthropocene: flexibility and survival
Trends in Ecology & Evolution, Volume 30, Issue 4, p215-222
Tools to tipple: ethanol ingestion by wild chimpanzees using leaf-sponges
Royal Society Open Science, 2: 150150
Distractor Effect of Auditory Rhythms on Self-Paced Tapping in Chimpanzees and Humans
PLOS ONE, 10(7): e0130682
First GIS analysis of modern stone tools used by wild chimpanzees (Pan troglodytes verus) in Bossou, Guinea, West Africa
PloS one, 10 (3), e0121613
Lethal aggression in Pan is better explained by adaptive strategies than human impacts
Nature, 513, 414-417
The Origin of Representational Drawing: A Comparison of Human Children and Chimpanzees
Child Development, Volume 85, Number 6, Pages 2232-2246
Playful expressions in one-year-old chimpanzee infants in social and solitary play contexts
Frontiers in Psychology, 5:741
[News] A Survey of the Savanna Vegetation in Bossou, Guinea
Pan Africa News, 21(2): 22-24
Chimpanzee choice rates in competitive games match equilibrium game theory predictions.
Scientific Reports, 4: 5182
Chimpanzees and Humans Mimic Pupil-Size of Conspecifics.
PLoS ONE, 9(8): e104886
Density estimates and nesting-site selection in chimpanzees of the Nimba Mountains, Côte d'Ivoire, and Guinea
American Journal of Primatology, Volume 76, Issue 11, pages 999-1010
New type of Sendai virus vector provides transgene-free iPS cells derived from chimpanzee blood
PloS one, 9(12), e113052
[Note] Newly Observed Bird Consumption by a Chimpanzee (Pan troglodytes) at Bossou, Guinea, West Africa
Pan Africa News, 20(1): 8-10
Developmental patterns of chimpanzee cerebral tissues provide important clues for understanding the remarkable enlargement of the human brain
Proceedings of the Royal Society B, 280(1753): 20122398
Intracranial arachnoid cysts in a chimpanzee (Pan troglodytes)
Primates, Volume 55, Issue 1, pp 7-12
Evolution of the brain and social behavior in chimpanzees
Current Opinion in Neurobiology, 23:443–449
The Arena System: a novel shared touch-panel apparatus for the study of chimpanzee social interaction and cognition
Behavior Research Methods, Volume 46, Issue 3, pp 611-618
Behavioral recovery from tetraparesis in a captive chimpanzee
Primates, Volume 54, Issue 3, pp 237-243
Spontaneous synchronized tapping to an auditory rhythm in a chimpanzee
Scientific Reports, 3, 1556
Evidence for a midlife crisis in great apes consistent with the U-shape in human well-being.
Proceedings of the National Academy of Sciences, 109(49): 19949-19952
All too human? Chimpanzee and orang-utan personalities are not anthropomorphic projections
Animal Behaviour, Volume 83, Issue 6, 1355–1365
Video Preference Assessment and Behavioral Management of Single-Caged Japanese Macaques (Macaca fuscata) by Movie Presentation
Journal of Applied Animal Welfare Science, 15(2), 101-112
Epidemiological study of zoonoses derived from humans in captive Chimpanzees
Primates, Volume 54, Issue 1, pp 89-98
Nest-Building by Chimpanzees (Pan troglodytes verus) at Seringbara, Nimba Mountains: Antipredation, Thermoregulation, and Antivector Hypotheses
International Journal of Primatology, Volume 33, Number 2, 356-380
Terrestrial Nest-Building by Wild Chimpanzees (Pan troglodytes): Implications for the Tree-to-Ground Sleep Transition in Early Hominins
American Journal Of Physical Anthropology, Volume 148, Issue 3, pages 351–361
Ecology of culture: do environmental factors influence foraging tool use in wild chimpanzees, Pan troglodytes verus?
Animal Behaviour, 85(1): 175-185
Socioecological adaptations by chimpanzees, Pan troglodytes verus, inhabiting an anthropogenically impacted habitat
Animal Behaviour, Volume 83, Issue 3, March 2012, Pages 801-810
Chimpanzee interactions with nonhuman species in an anthropogenic habitat
Behaviour, Volume 149, Issue 3-4, pages 299 – 324
A novel brood-site pollination mutualism?: the root holoparasite Thonningia sanguinea (Balanophoraceae) and an inflorescence-feeding fly in the tropical rainforests of West Africa
Plant Species Biology, 27 (2), 164-169
Chimpanzee carrying behaviour and the origins of human bipedality
Current Biology, Volume 22, Issue 6, R180-R181
Differential prefrontal white matter development in chimpanzees and humans.
Current Biology, 21, 1397-1402
Deactivation of snares by wild chimpanzees.
Primates, 52, 1-5
Bush fire control using arbors in green corridor project at Bossou
Pan Africa News, 18, 10-11
The first chimpanzee sanctuary in Japan: an attempt to care for the “surplus” of biomedical research
American Journal of Primatology, Volume 73, Issue 3, pages 226-232
Chimpanzees' use of conspecific cues in matching-to-sample tasks: public information use in a fully automated testing environment
Animal Cognition, Volume 14, Number 6, 893-902
Visuoauditory mappings between high luminance and high pitch are shared by chimpanzees (Pan troglodytes) and humans.
Proc Natl Acad Sci U S A., published ahead of print December 5, 2011
Correlation between menstrual cycle and cognitive performance in a chimpanzee (Pan troglodytes).
Journal of Comparative Psychology, 125: 104-111
Emotional consequences when chimpanzees (Pan troglodytes) face challenges: individual differences in self-directed behaviours during cognitive tasks
Animal Welfare, 19, 25-30
Studying extant species to model our past
Science, 327 (5964), 410-410
Isolation of Bifidobacteria from feces of chimpanzees in the wild
The Journal of general and applied microbiology, 56 (1), 57-60
Prolonged maturation of prefrontal white matter in chimpanzees
Nature Precedings, 4411.1.
Tetraparesis resembling acute transverse myelitis in a captive chimpanzee (Pan troglodytes): long-term care and recovery
Journal of Medical Primatology, 39, 336-346.
Do chimpanzees (Pan troglodytes) use cleavers and anvils to fracture Treculia africana fruits? Preliminary data on a new form of percussive technology.
Primates, 51, 175-178.
Flexible feeding on cultivated underground storage organs by rainforest-dwelling chimpanzees at Bossou, West Africa.
Journal of Human Evolution, 58, 227-233
Attacks on local persons by chimpanzees in Bossou, Republic of Guinea: long-term perspectives
American Journal of Primatology, 72:887-896
A Case Report of Meat and Fruit Sharing in a Pair of Wild Bonobos
Pan Africa News, 17(2), December 2010 21-23
Farsightedness (presbyopia) in a wild elderly chimpanzee: The first report
Geriatrics & Gerontology International, Volume 10, Issue 1, pages 113-114
Bird in the hand: Bossou chimpanzees (Pan troglodytes) capture West African wood-owls (Ciccaba woodfordi) but not to eat
Pan Africa News, 17(1), 6-9
Chimpanzee mothers at Bossou, Guinea carry the mummified remains of their dead infants.
Current Biology, Volume 20, Issue 8, R351-R352
Assessing chimpanzee personality and subjective well-being in Japan.
American Journal of Primatology, 71, 283-292
Leaf-tool use for drinking water by wild chimpanzees (Pan troglodytes): acquisition patterns and handedness
Animal cognition, 12 (1), 115-125
Spatial construction skills of chimpanzees (Pan troglodytes) and young human children (Homo sapiens sapiens).
Developmental Science, Volume 12, Issue 4, 536-548
The chimpanzee mind: in search of the evolutionary roots of the human mind
Animal Cognition, 12, S1-S9
Symbolic representation of number in chimpanzees
Current Opinion in Neurobiology, 19:92-98
Effect of species-specificity in auditory-visual intermodal matching in a chimpanzee (Pan troglodytes) and humans
Behavioural Processes, 82, 160-163
Visual and auditory conditional position discrimination in chimpanzees (Pan troglodytes).
Behavioural Processes, 82, 90-94.
Auditory-visual intermodal matching based on individual recognition in a chimpanzee (Pan troglodytes)
Animal Cognition, 12, S71-S85
Acquisition and memory of sequence order in young and adult chimpanzees (Pan troglodytes).
Animal Cognition, 12, S59-S69.
Laterality in hand use across four tool-use behaviors among the wild chimpanzees of Bossou, Guinea, West Africa.
American Journal of Primatology, 70, 40-48.
Social influences on ant-dipping acquisition in the wild chimpanzees (Pan troglodytes verus) of Bossou, Guinea, West Africa.
Animal Cognition, 12, S37-S48.
Use of Wild and Cultivated Foods by Chimpanzees at Bossou, Republic of Guinea: Feeding Dynamics in a Human-Influenced Environment
American Journal of Primatology, 71:636-646
Nature, 460, 339-344
Dynamic in-hand movements in adult and young juvenile chimpanzees (Pan troglodytes).
American Journal of Physical Anthropology, Volume 138, Issue 3, pages 274-285
Tool-composite reuse in wild chimpanzees (Pan troglodytes): Archaeologically invisible steps in the technological evolution of early hominins?
Animal Cognition, 12, S103-S114
Plasticity of ability to form cross-modal representations in infant Japanese macaques.
Developmental Science, 12, 446-452
Invention and modification of a new tool use behavior: Ant-fishing in trees by a wild chimpanzee (Pan troglodytes verus) at Bossou, Guinea.
American Journal of Primatology, 70, 699-702.
Development of using experimenter-given cues in infant chimpanzees: Longitudinal changes in behavior and cognitive development.
Developmental Science, 11(1), 98-108.
Arbors and cuttings: New trials for Green Corridor Project at Bossou-Nimba
Pan Africa News, 15(2): 20-23
Cultural differences in army ant predation by West African chimpanzees? A comparative study of microecological variables
Animal Behaviour, 76, 37-45
Kinji Imanishi and 60 years of Japanese Primatology.
Current Biology, 18(14), R587-R591
Chaînes opératoires and resource-exploitation strategies in chimpanzee (Pan troglodytes) nut cracking.
Journal of Human Evolution, 55, 148-163
Molecular analyses of the intestinal microbiota of chimpanzees in the wild and in captivity.
American journal of Primatology, 69: 367-376
Tooth eruption in two agile gibbons (Hylobates agilis)
Gibbon Journal, 3(1), 66-73
Aging and fertility patterns in wild chimpanzees provide insights into the evolution of menopause.
Current Biology, 17, 2150-2156
Development of the Laryngeal Air Sac in Chimpanzees
International Journal of Primatology, Volume 28, Number 2, 483-492
Assessment of the planted trees in Green Corridor Project
Pan Africa News, 14(2), 27-29
Ground-nesting by the chimpanzees of the Nimba Mountains, Guinea: Environmentally or socially determined?
American Journal of Primatology, 69, 407-419
Working memory of numerals in chimpanzees.
Current Biology, Volume 17, Issue 23, R1004-R1005
Chimpanzees share forbidden fruit.
PLoS ONE, 2(9): e886
Preliminary surveys of chimpanzees in Gouéla area and Déré Forest, the Nimba Mountain Biosphere Reserve, Republic of Guinea
Pan Africa News, 14(2), 20-22
New Nut-Cracking Sites in Diecké Forest, Guinea: An Overview of the Surveys
Pan Africa News, 14 (1), 11-13
Descent of the hyoid in chimpanzees: evolution of facial flattening and speech.
Journal of Human Evolution, 51(3): 244-254
Behavior of infant chimpanzees during the night in the first 4 months of life: smiling and suckling in relation to behavioral state.
Infancy, 9(2): 215-234
Hand Clapping by a Chimpanzee in the Nimba Mountains, Guinea, West Africa
Pan Africa News, 13(2)19-21
Road crossing in chimpanzees: a risky business.
Current Biology, Vol 16 No 17, 668-670
Japanese macaques form a cross-modal representation of their own species in their first year of life
Primates, 47, 350-354
Response to novel food in infant chimpanzees: Do infants refer to mothers before ingesting food on their own?
Behavioural Processes, 68(1):85-90
Exploring by doing: How young chimpanzees discover surfaces through actions with objects
Infant Behavior & Development, 28, 316-328
Development of face recognition in infant chimpanzees (Pan troglodytes)
Cognitive Development , 20, 49-63
Can chimpanzee infants (Pan troglodytes) form categorical representations in the same manner as human infants(Homo sapiens)?
Developmental Science, 8:3, pp 240-254
How does stone-tool use emerge? Introduction of stones and nuts to naive chimpanzees in captivity.
Primates, 46(2): 91-102.
Group differences in the mutual gaze of chimpanzees (Pan troglodytes).
Developmental Psychology, 41: 616-624
Food transfer between chimpanzee mothers and their infants
Development of social cognition in infant chimpanzees (Pan troglodytes): Face recognition, smiling, gaze, and the lack of triadic interactions
Japanese Psychological Research, Volume 46, Issue 3, pages 227-235
Imitation in neonatal chimpanzees (Pan troglodytes)
Developmental Science, 7:4, pp 437-442
Color classification by chimpanzees (Pan troglodytes) in a matching-to-sample task
Behavioural Brain Research, 148, 157-165
Development of schematic face preference in macaque monkeys
Behavioural Processes, 66, 17-21
Oil Palm Use by Adjacent Communities of Chimpanzees at Bossou and Nimba Mountains, West Africa
International Journal of Primatology, Vol. 25, No. 3, 551-581
Cultural innovation and transmission of tool use in wild chimpanzees: evidence from field experiments
Animal Cognition, Volume 6, Number 4, 213-223
Contagious yawning in chimpanzees
Proc Biol Sci., 271(Suppl 6): S468-S470
Finger drawing by infant chimpanzees (Pan troglodytes)
Animal Cognition, 6 : 245-251
Plasma insulin-like growth factor-I, testosterone and morphological changes in the growth of captive agile gibbons (Hylobates agilis) from birth to adolescence
Primates, 44 (3), 273-280
Behavioural development in a matching-to-sample task and token use by an infant chimpanzee reared by his mother
Animal Cognition, 6 : 259-267
Urinary steroids, FSH and CG measurements for monitoring the ovarian cycle and pregnancy in the chimpanzee
Journal of Medical Primatology, Volume 32, Issue 1, pages 15-22
Descent of the larynx in chimpanzee infants
Proceedings of the National Academy of Sciences, 100(12), 6930-6933
Preference for human direct gaze in infant chimpanzees (Pan troglodytes)
Cognition, 89, B53-B64
The Ai project: historical and ecological contexts
Animal Cognition, 6(4): 199-211
Development of interception of moving targets by chimpanzees (Pan troglodytes) in an automated task
Animal Cognition, 6 : 169-183
Cognitive development in object manipulation by infant chimpanzees.
Animal Cognition, 6: 225-233
Responses to Novel Foods in Captive Chimpanzees
Zoo Biology, 21:539-548
Enumeration of briefly presented items by the chimpanzee (Pan troglodytes) and humans (Homo sapiens)
Animal Learning & Behavior, 30 (2), 143-157
An infant chimpanzee (Pan troglodytes) follows human gaze
Animal Cognition, Volume 5, Number 2, 107-114
Vaginal Fatty Acids Produced by Chimpanzees during Menstrual Cycles
Folia Primatologica, 74:75-79
Ant-Dipping Among the Chimpanzees of Bossou, Guinea, and Some Comparisons With Other Sites
American Journal of Primatology, 58:133-148
The use of tokens as rewards and tools by chimpanzees(Pan troglodytes)
Animal Cognition, 4 :213-221
Memory of movies by chimpanzees (Pan troglodytes)
Journal of Comparative Psychology, 115: 152-158
For a rise of comparative cognitive science
Animal Cognition, 4: 133-135
“Magical number 5” in a chimpanzee
Behavioral and Brain Sciences, 24: 127-128
Acquisition of navigation by chimpanzees (Pan troglodytes) in an automated fingermaze task
Animal Cognition, 4 :179-192
Behavioural Diversity among the Wild Chimpanzee Populations of Bossou and Neighbouring Areas, Guinea and Côte d’Ivoire, West Africa
Folia Primatol, 72:57-68
Tactics to obtain a hidden food item in chimpanzee pairs (Pan troglodytes).
Animal Cognition, 4, 285-295.
Capturing and Toying with Hyraxes (Dendrohyrax dorsalis) by Wild Chimpanzees (Pan troglodytes) at Bossou, Guinea
American Journal of Primatology, 53, 93-97
Use of numerical symbols by the chimpanzee (Pan troglodytes): Cardinals, ordinals, and the introduction of zero
Animal Cognition, 4 :193-199
Visuo-motor development which causes detection of visual depth from motion and density cues
Swiss Journal of Psychology, 59(2): 102-107
Sequential responding to arabic numerals with wild cards by the chimpanzee (Pan troglodytes)
Animal Cognition, 3 :1-11
Imitation of intentional manipulatory actions in chimpanzees (Pan troglodytes)
Journal of Comparative Psychology, 114: 381-391
Numerical memory span in a chimpanzee
Nature, Volume: 403, Issue: 6765, Pages: 39-40
A conventional approach to chimpanzee cognition. Response to M.D.Hauser (2000)
Trends in Cognitive Sciences, 4(4):128-129
Factors influencing imitation of manipulatory actions in chimpanzees (Pan troglodytes)
Journal of Comparative Psychology, 113(2) 128-136
[Note] Diecke Forest in Guinea
Pan Africa News, 6(1): 10-11
Numerical ordering in a chimpanzee (Pan troglodytes): Planning, executing, and monitoring
Journal of Comparative Psychology, 113(2) 178-185
Green passage plan (tree-planting project) and environmental education using documentary videos at Bossou: a progress report.
Pan Africa News, 5:18-20
Use of Leaves As Cushions to Sit on Wet Ground by Wild Chimpanzees
American Journal of Primatology, 44:215-220 (1998)
Acquisition and transmission of tool making and use for drinking juice in a group if captive chimpanzees (Pan troglodytes).
Japanese Psychological Research, 39, 253-265
Choice Between Two Discrimination Tasks in Chimpanzees (Pan troglodytes)
Japanese Psychological Research, Volume 39, Issue 3, pages 226–235
Editorial: A brief note on the background of the study of cognition and behavior of chimpanzees by Japanese researchers
Japanese Psychological Research, Volume 39, Issue 3, pages133 - 139
Model-guided Line Drawing in the Chimpanzee (Pan troglodytes)
Japanese Psychological Research, Volume 39, Issue 3, pages 154–181
Development of Stone Tool Use by Wild Chimpanzees (Pan troglodytes)
Journal of Comparative Psychology, 111, 2, 159 - 173
Editorial: A brief note on the historical background of the study of cognition and behavior in nonhuman primates by Japanese researchers
Japanese psychological research, 38(3), 109-112
Visually guided drawing in the chimpanzee (Pan troglodytes)
Japanese psychological research, Volume: 38 Issue: 3, 126-135
Hand preferences of captive chimpanzees (Pan troglodytes) in simple reaching for food
International Journal of Primatology, 16(1), 17-35
Superiority of conspecific faces and reduced inversion effect in face perception by a chimpanzee (Pan troglodytes).
Folia Primatologica, 61, 110-114
Hand preference and tool use in wild chimpanzees
Primates, 34(2), 151-159
Perception of complex geometric figures in chimpanzees (Pan troglodytes) and humans (Homo sapiens): Analyses of visual similarity on the basis of choice reaction time.
Journal of Comparative Psychology, 106, 43-52
Emergence of symmetry in a visual conditional discrimination by chimpanzees (Pan troglodytes).
Psychological Reports, 68, 51-60
Flexibility of Wild Chimpanzee Nut-cracking Behavior Using Stone Hammers and Anvils: an Experimental Analysis
Ethology, Volume 87, Issue 3-4, pages 237–248
Nesting cups and metatools in chimpanzees
The Behavioral and Brain Sciences, Volume: 14 Issue: 4 570 -571
Effects of frequency of the tones on auditory event related potentials in monkeys (Macaca fuscata) under various hypobaric hypoxia conditions of simulated high altitudes.
Primates, 32(3), 371-378.
Picture perception in monkeys and pigeons: transfer of rightside-up versus upside-down discrimination of photographic objects across conceptual categories.
Primates, 32(4), 473-482
Case report on the death of a wild chimpanzee (Pan troglodytes verus)
Primates, Volume 31, Number 4, 635-641
Form perception and visual acuity in a chimpanzee.
Folia Primatologica, 55, 24-32
Social transmission of food preferences in Japanese monkeys (Macaca fuscata) after mere exposure or aversion training.
Journal of Comparative Psychology, Vol 104(3), 233-237.
Delayed figure reconstruction by a chimpanzee (pan-troglodytes) and humans (homo-sapiens)
Journal of Comparative Psychology, 104(4) 345-351
Japanese monkeys' cardiac responses to visual depth
Perceptual and motor skills, 67(1), 303-310
A new approach to evaluating troop deployment in wild Japanese monkeys.
International Journal of Primatology, 7(1), 1-16
A new procedure to study the perceptual world of animals with sensory reinforcement: Recognition of humans by a chimpanzee
Primates, 27(3), 283-291
Colour naming and classification in a chimpanzee (Pan troglodytes)
Journal of Human Evolution, Volume 14, Issue 3, Pages 283-291
Food aversion learning in Japanese monkeys (Macaca fuscata).
Folia primatologica, 40(4), 247-255
One-trial long-lasting food-aversion learning in wild Japanese monkeys (Macaca fuscata).
Behavioral and neural biology, 39(2), 155-159
Food-aversion conditioning in Japanese monkeys (Macaca fuscata): Suppression of key-pressing.
Behavioral and neural biology, 36(3), 298-303.
Object and Color Naming in Chimpanzees(Pan troglodytes)
Proceedings of the Japan Academy, Series B, Vol.58 No.5 P118-122