All Stories

  1. The development of expertise at cracking palm nuts by wild bearded capuchin monkeys, Sapajus libidinosus

    Article • Animal Behaviour, March 2023, Elsevier

    Professor Dorothy M Fragaszy

  2. Adaptable navigation in bull ants (Myrmecia midas).

    Article • Journal of Comparative Psychology, February 2023, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  3. Rules and metarules: Adult cotton-top tamarins (Saguinus oedipus) and 5-year-old children (Homo sapiens) can master both.

    Article • Journal of Comparative Psychology, June 2022, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  4. On the psychological origins of tool use

    Article • Neuroscience & Biobehavioral Reviews, March 2022, Elsevier

    Professor Dorothy M Fragaszy

  5. End the search quickly: Pigeons (Columba livia) and humans (Homo sapiens) share the same bias.

    Article • Journal of Comparative Psychology, February 2022, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  6. How tufted capuchin monkeys (Sapajus spp.) and humans (Homo sapiens) handle a jointed tool.

    Article • Journal of Comparative Psychology, August 2021, American Psychological Association (APA)

    Professor Dorothy M Fragaszy, Madhur Mangalam, José Eduardo Reynoso Cruz

  7. African striped mice (Rhabdomys) mind the neighbors.

    Article • Journal of Comparative Psychology, August 2021, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  8. One hundred years of the Journal of Comparative Psychology.

    Article • Journal of Comparative Psychology, February 2021, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  9. Comparative psychology’s founding mother, Margaret Floy Washburn.

    Article • Journal of Comparative Psychology, February 2021, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  10. A new look at universals and specificities in the songs of humpback whales.

    Article • Journal of Comparative Psychology, February 2021, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  11. Anticipating future actions: Motor planning improves with age in wild bearded capuchin monkeys ( Sapajus libidinosus )

    Article • Developmental Science, December 2020, Wiley

    Valentina Truppa, Professor Dorothy M Fragaszy

  12. Optional tool use: The case of wild bearded capuchins ( Sapajus libidinosus ) cracking cashew nuts by biting or by using percussors

    Article • American Journal of Primatology, December 2020, Wiley

    Valentina Truppa, Professor Dorothy M Fragaszy

  13. Dexterity and technique in termite fishing by chimpanzees (Pan troglodytes troglodytes) in the Goualougo Triangle, Republic of Congo

    Article • American Journal of Primatology, November 2020, Wiley

    Professor Dorothy M Fragaszy

  14. Odds favor the bees.

    Article • Journal of Comparative Psychology, August 2020, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  15. Folk Physics in the Twenty-first Century: Understanding Tooling as Embodied

    Article • Animal Behavior and Cognition, August 2020, Animal Behavior and Cognition

    Professor Dorothy M Fragaszy

  16. Rare Bearded Capuchin (Sapajus libidinosus) Tool-Use Culture is Threatened by Land use Changes in Northeastern Brazil

    Article • International Journal of Primatology, July 2020, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  17. Adult and juvenile bearded capuchin monkeys handle stone hammers differently during nut‐cracking

    Article • American Journal of Primatology, May 2020, Wiley

    Professor Dorothy M Fragaszy

  18. Compound grips in tufted capuchin monkeys (Sapajusspp andSapajus libidinosus)

    Article • American Journal of Primatology, April 2020, Wiley

    Professor Dorothy M Fragaszy

  19. Rats (Rattus norvegicus), like humans (Homo sapiens), detect auditory jitter.

    Article • Journal of Comparative Psychology, February 2020, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  20. Positional behavior and substrate use in wild adult bearded capuchin monkeys (Sapajus libidinosus)

    Article • American Journal of Primatology, November 2019, Wiley

    Professor Dorothy M Fragaszy

  21. Supplemental Material for Distinct Perceptuomotor Features of Percussive Tooling in Humans (Homo sapiens) and Wild Bearded Capuchin Monkeys (Sapajus libidinosus)

    Article • Journal of Comparative Psychology, August 2019, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  22. Is the SNARC a boojum?

    Article • Journal of Comparative Psychology, August 2019, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  23. How bearded capuchin monkeys ( Sapajus libidinosus ) prepare to use a stone to crack nuts

    Article • American Journal of Primatology, February 2019, Wiley

    Professor Dorothy M Fragaszy

  24. Dogs (Canis familiaris) ignore gravity.

    Article • Journal of Comparative Psychology, February 2019, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  25. Persistent pigeons (Columba livia) learn how to produce a list.

    Article • Journal of Comparative Psychology, August 2018, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  26. Foraging and inter‐individual distances of bearded capuchin monkeys

    Article • American Journal of Primatology, July 2018, Wiley

    Professor Dorothy M Fragaszy

  27. Perceptual Learning of Tooling Affordances of a Jointed Object via Dynamic Touch

    Article • Ecological Psychology, May 2018, Taylor & Francis

    Professor Dorothy M Fragaszy

  28. Location of a grasped object’s effector influences perception of the length of that object via dynamic touch

    Article • Experimental Brain Research, May 2018, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  29. Editorial.

    Article • Journal of Comparative Psychology, February 2018, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  30. A new look at play fighting.

    Article • Journal of Comparative Psychology, February 2018, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  31. Tooling

    Article • January 2018, Elsevier

    Professor Dorothy M Fragaszy

  32. Unique perceptuomotor control of stone hammers in wild monkeys

    Article • Biology Letters, January 2018, Royal Society Publishing

    Professor Dorothy M Fragaszy

  33. Stone-Tool Use in Wild Monkeys: Implications for the Study of the Body-Plus-Tool System

    Article • Ecological Psychology, October 2017, Taylor & Francis

    Professor Dorothy M Fragaszy

  34. Primate archaeology evolves

    Article • Nature Ecology & Evolution, September 2017, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  35. Perception of the length of an object through dynamic touch is invariant across changes in the medium

    Article • Attention Perception & Psychophysics, August 2017, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  36. Female bearded capuchin monkeys (Sapajus libidinosus) use objects to solicit the sexual partner.

    Article • Journal of Comparative Psychology, August 2017, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  37. Synchronized practice helps bearded capuchin monkeys learn to extend attention while learning a tradition

    Article • Proceedings of the National Academy of Sciences, July 2017, Proceedings of the National Academy of Sciences

    Professor Dorothy M Fragaszy

  38. Dorothy Fragaszy

    Article • January 2017, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  39. Monkeys and Prosimians: Social Learning

    Article • January 2017, Elsevier

    Professor Dorothy M Fragaszy

  40. Wild capuchin monkeys spontaneously adjust actions when using hammer stones of different mass to crack nuts of different resistance

    Article • American Journal of Physical Anthropology, May 2016, Wiley

    Professor Dorothy M Fragaszy

  41. Ontogeny of tool use: how do toddlers use hammers?

    Article • Developmental Psychobiology, April 2016, Wiley

    Professor Dorothy M Fragaszy

  42. When and where to practice: social influences on the development of nut-cracking in bearded capuchins (Sapajus libidinosus)

    Article • Animal Cognition, March 2016, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  43. The strategic role of the tail in maintaining balance while carrying a load bipedally in wild capuchins (Sapajus libidinosus): a pilot study

    Article • Primates, January 2016, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  44. Variations in an African Grey parrot’s speech patterns following ignored and denied requests

    Article • Animal Cognition, December 2015, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  45. Body mass in wild bearded capuchins, (Sapajus libidinosus): Ontogeny and sexual dimorphism

    Article • American Journal of Primatology, December 2015, Wiley

    Professor Dorothy M Fragaszy

  46. Percussive tool use by Taï Western chimpanzees and Fazenda Boa Vista bearded capuchin monkeys: a comparison

    Article • Philosophical Transactions of the Royal Society B Biological Sciences, November 2015, Royal Society Publishing

    Professor Dorothy M Fragaszy

  47. “Vision for Action” in Young Children Aligning Multi-Featured Objects: Development and Comparison with Nonhuman Primates

    Article • PLoS ONE, October 2015, PLOS

    Professor Dorothy M Fragaszy

  48. Age‐related variation in the mechanical properties of foods processed by Sapajus libidinosus

    Article • American Journal of Physical Anthropology, September 2015, Wiley

    Professor Dorothy M Fragaszy

  49. Remote sensing and habitat mapping for bearded capuchin monkeys (Sapajus libidinosus): landscapes for the use of stone tools

    Article • Journal of Applied Remote Sensing, August 2015, SPIE

    Professor Dorothy M Fragaszy

  50. Kinetics of bipedal locomotion during load carrying in capuchin monkeys

    Article • Journal of Human Evolution, August 2015, Elsevier

    Professor Dorothy M Fragaszy

  51. Wild Bearded Capuchin Monkeys Crack Nuts Dexterously

    Article • Current Biology, May 2015, Elsevier

    Professor Dorothy M Fragaszy

  52. What is teaching? A clear, integrative, operational definition for teaching is still needed

    Article • Behavioral and Brain Sciences, January 2015, Cambridge University Press

    Professor Dorothy M Fragaszy

  53. The effects of ecology and evolutionary history on robust capuchin morphological diversity

    Article • Molecular Phylogenetics and Evolution, January 2015, Elsevier

    Professor Dorothy M Fragaszy

  54. Stone Anvil Damage by Wild Bearded Capuchins (Sapajus libidinosus) during Pounding Tool Use: A Field Experiment

    Article • PLoS ONE, November 2014, PLOS

    Professor Dorothy M Fragaszy

  55. Does own experience affect perception of others’ actions in capuchin monkeys (Cebus apella)?

    Article • Animal Cognition, May 2014, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  56. Multi‐step routes of capuchin monkeys in a laser pointer traveling salesman task

    Article • American Journal of Primatology, April 2014, Wiley

    Professor Dorothy M Fragaszy

  57. The development of facial identity discrimination through learned attention

    Article • Developmental Psychobiology, January 2014, Wiley

    Dr. Elizabeth A Simpson, Professor Dorothy M Fragaszy

  58. Coming to Grips with Learning with Others

    Article • Science, November 2013, American Association for the Advancement of Science

    Professor Dorothy M Fragaszy

  59. The fourth dimension of tool use: temporally enduring artefacts aid primates learning to use tools

    Article • Philosophical Transactions of the Royal Society B Biological Sciences, October 2013, Royal Society Publishing

    Professor Dorothy M Fragaszy

  60. Socioecology of wild bearded capuchin monkeys (Sapajus libidinosus): an analysis of social relationships among female primates that use tools in feeding

    Article • Behaviour, January 2013, Brill

    Professor Dorothy M Fragaszy

  61. What Is Challenging About Tool Use? The Capuchin’s Perspective

    Article • March 2012

    Professor Dorothy M Fragaszy

  62. Stone tool use by adult wild bearded capuchin monkeys (Cebus libidinosus). Frequency, efficiency and tool selectivity

    Article • Journal of Human Evolution, July 2011, Elsevier

    Professor Dorothy M Fragaszy

  63. Comparative Studies of Squirrel Monkeys (Saimiri) and Titi Monkeys (Callicebus) in Travel Tasks

    Article • Zeitschrift für Tierpsychologie, April 2010, Wiley

    Professor Dorothy M Fragaszy

  64. Monkeys and Prosimians: Social Learning

    Article • January 2010, Elsevier

    Professor Dorothy M Fragaszy

  65. Book Review: Manipulative Monkeys: The Capuchins of Lomas Barbudal

    Article • American Journal of Physical Anthropology, December 2008, Wiley

    Professor Dorothy M Fragaszy

  66. Tapping Into Tool Use

    Article • January 2007, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  67. Jane Goodall: The Woman Who Redefined Man

    Article • BioScience, January 2007, Oxford University Press (OUP)

    Professor Dorothy M Fragaszy

  68. An Interesting Idea

    Article • Developmental Psychobiology, January 2006, Wiley

    Professor Dorothy M Fragaszy

  69. Capuchin Monkeys Learn with Others

    Article • January 2006, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  70. Vigilance in Nut Cracking by Bearded Capuchin Monkeys (Cebus libidinosus)

    Article • January 2006, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  71. Joystick acquisition in tufted capuchins ( Cebus apella )

    Article • Animal Cognition, September 2003, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  72. Preface

    Article • July 2003, Cambridge University Press

    Professor Dorothy M Fragaszy

  73. Towards a biology of traditions

    Article • July 2003, Cambridge University Press

    Professor Dorothy M Fragaszy

  74. Making space for traditions

    Article • Evolutionary Anthropology Issues News and Reviews, April 2003, Wiley

    Professor Dorothy M Fragaszy

  75. Social Learning and Imitation: Making Spaces for Traditions

    Article • January 2003, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  76. The Biology of Traditions

    Article • January 2003, Cambridge University Press

    Professor Dorothy M Fragaszy

  77. Including Traditions in Captive Cauhchins: Part I

    Article • January 2003, American Psychological Association (APA)

    Professor Dorothy M Fragaszy

  78. Extending the model: Pavlovian social learning

    Article • Behavioral and Brain Sciences, April 2000, Cambridge University Press

    Professor Dorothy M Fragaszy

  79. Social Learning in Monkeys: Primate “Primacy” Reconsidered

    Article • January 1996, Elsevier

    Professor Dorothy M Fragaszy

  80. Variation among juvenile capuchins in social influences on exploration

    Article • American Journal of Primatology, January 1994, Wiley

    Professor Dorothy M Fragaszy

  81. A comparative view of object combination and tool use: Moving ahead

    Article • Behavioral and Brain Sciences, December 1991, Cambridge University Press

    Professor Dorothy M Fragaszy

  82. Loose Threads

    Article • Contemporary Psychology, January 1991, Portico

    Professor Dorothy M Fragaszy

  83. Early Behavioral Development in Capuchins (Cebus)

    Article • Folia Primatologica, February 1990, Brill

    Professor Dorothy M Fragaszy

  84. Variability and Adaptability in the Genus Cebus

    Article • Folia Primatologica, January 1990, Brill

    Professor Dorothy M Fragaszy

  85. Social Processes Affecting the Appearance of Innovative Behaviors in Capuchin Monkeys

    Article • Folia Primatologica, January 1990, Brill

    Professor Dorothy M Fragaszy

  86. Activity states and motor activity in an infant capuchin monkey (Cebus apella) from birth through eleven weeks

    Article • Developmental Psychobiology, March 1989, Wiley

    Professor Dorothy M Fragaszy

  87. Cognition in Squirrel Monkeys A Contemporary Perspective

    Article • January 1985, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  88. Comparative performance in discrimination learning tasks in two New World primates (Saimiri sciureus andCallicebus moloch)

    Article • Animal Learning & Behavior, March 1981, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  89. Response to novelty inSaimiri andCallicebus: Influence of social context

    Article • Primates, April 1978, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  90. A program to generate Gellermann (pseudorandom) series of binary states

    Article • Behavior Research Methods, January 1978, Springer Science + Business Media

    Professor Dorothy M Fragaszy

  91. Do monkeys ape?

    Article • Cambridge University Press

    Professor Dorothy M Fragaszy

  92. Sensorimotor development in hand-reared and mother-reared tufted capuchins: A systems perspective on the contrasts

    Article • Cambridge University Press

    Professor Dorothy M Fragaszy