All Stories

  1. “Whoooo said that?”: responses of captive owls ( Strigiformes ) to the voices of familiar caregivers

    Article • PeerJ, June 2026, PeerJ

    Jennifer Vonk

  2. Purr-ceiving feelings: domestic cats respond to intraspecific cues of emotion

    Article • PeerJ, May 2026, PeerJ

    Jennifer Vonk

  3. Crashing the tea party: Imagining alternative explanations.

    Article • Journal of Experimental Psychology Animal Learning and Cognition, May 2026, American Psychological Association (APA)

    Jennifer Vonk

  4. Praise the light, indulge the dark: Parenting strategies and dark personality traits

    Article • Current Psychology, April 2026, Springer Science + Business Media

    Jennifer Vonk

  5. Anger at first slight: Hostile attributions mediate the associations between borderline personality traits and anger

    Article • Personality and Individual Differences, April 2026, Elsevier

    Jennifer Vonk

  6. Matching Bonds: Attachment Strength and Styles Extend From Humans to Companion Animals

    Article • Anthrozoös, March 2026, Taylor & Francis

    Jennifer Vonk

  7. The hornbill and the pitcher: a southern ground hornbill (Bucorvus leadbeateri) learns to solve the Aesop’s Fable task

    Article • acta ethologica, February 2026, Springer Science + Business Media

    Jennifer Vonk

  8. Looking to the Future of Primatology: Introduction to the Special Issue on Student‐Led Research

    Article • American Journal of Primatology, November 2025, Wiley

    Jennifer Vonk

  9. From chaos to conviction: Competitive social worldview mediates the associations between childhood unpredictability and ideological attitudes

    Article • International Journal of Personality Psychology, September 2025, University Library Groningen

    Jennifer Vonk

  10. Faith in Transition: The Complex Interplay of Parent and Peer Influences on Catholic Value Internalization Among College Students

    Article • Journal for the Scientific Study of Religion, August 2025, Wiley

    Jennifer Vonk

  11. Scents for Serpentes: are familiar humans un-hiss-takable?

    Article • Frontiers in Ethology, August 2025, Frontiers

    Jennifer Vonk

  12. Assessing Judgment Bias in Ambassador Animals: Two Case Studies

    Article • International Journal of Comparative Psychology, July 2025, California Digital Library (CDL)

    Jennifer Vonk

  13. I Feel You, Dog: Affective Empathy Informs Companion Animal Euthanasia Decisions

    Article • Anthrozoös, May 2025, Taylor & Francis

    Jennifer Vonk

  14. Spitefulness and envy: The mediating role of justice sensitivity

    Article • Personality and Individual Differences, May 2025, Elsevier

    Jennifer Vonk

  15. Gender and ethnic identity differences in narcissistic personality traits

    Article • International Journal of Personality Psychology, May 2025, University Library Groningen

    Jennifer Vonk

  16. Cages or Conservation? Providing Information Improves Public Perceptions of Zoos

    Article • Anthrozoös, April 2025, Taylor & Francis

    Jennifer Vonk

  17. Form over function: Striped skunks (mephitis mephitis) learn arbitrary visual patterns to solve the slat-pulling task.

    Article • Journal of Comparative Psychology, February 2025, American Psychological Association (APA)

    Jennifer Vonk

  18. Passing the Torch: The Mediating Role of Internalization in the Intergenerational Continuity of Catholic Religious Value Transmission in American Parents

    Article • The Journal of Genetic Psychology, January 2025, Taylor & Francis

    Jennifer Vonk

  19. Challenges and promises of big team comparative cognition

    Article • Nature Human Behaviour, December 2024, Springer Science + Business Media

    Jennifer Vonk, Mr Mahmoud Elsherif

  20. Is companion animal loss cat-astrophic? Responses of domestic cats to the loss of another companion animal

    Article • Applied Animal Behaviour Science, August 2024, Elsevier

    Jennifer Vonk

  21. Attachment as the Catalyst for the Attribution of Complex Cognition and Emotion to Companion Cats

    Article • Animals, July 2024, MDPI AG

    Jennifer Vonk

  22. A cross-sequential study of theory of mind, IQ, and fair sharing framed socially and non-socially in young children

    Article • Cognitive Development, July 2024, Elsevier

    Jennifer Vonk

  23. Assessing Judgment Bias in Ambassador Animals: Two Case Studies

    Article • April 2024, MDPI AG

    Jennifer Vonk

  24. The early life of Narcissus: The connections that childhood harshness and unpredictability have with narcissistic personality traits

    Article • Personality and Individual Differences, April 2024, Elsevier

    Jennifer Vonk

  25. No Loss of Support if Attached: Attachment Not Pet Type Predicts Grief, Loss Sharing, and Perceived Support

    Article • Anthrozoös, March 2024, Taylor & Francis

    Jennifer Vonk

  26. Inevitable or Preventable? The Biosocial Theory of Wartime Rape

    Article • Evolutionary Psychological Science, March 2024, Springer Science + Business Media

    Jennifer Vonk

  27. Prosocial or photo preferences? Gorillas' prosocial choices using a touchscreen

    Article • American Journal of Primatology, February 2024, Wiley

    Jennifer Vonk

  28. Lack of reinforcement is hard to “bear”: Assessing judgment bias in grizzly bears ( Ursus arctos horribilis )

    Article • Journal of Applied Animal Welfare Science, February 2024, Taylor & Francis

    Jennifer Vonk

  29. Catcalls: exotic cats discriminate the voices of familiar caregivers

    Article • PeerJ, February 2024, PeerJ

    Jennifer Vonk

  30. Asexual individuals report high preferences for femininity in male and female faces

    Article • Psychology and Sexuality, December 2023, Taylor & Francis

    Jennifer Vonk

  31. The bonds between us: Stronger bonds predict greater attribution of companion animal socio-cognitive skills

    Article • Applied Animal Behaviour Science, December 2023, Elsevier

    Jennifer Vonk

  32. Does narcissus prefer to be alone? Narcissistic personality features and the preference for solitude

    Article • Journal of Personality, November 2023, Wiley

    Jennifer Vonk

  33. Borderline personality features predict empathy for animals but not for children

    Article • International Journal of Personality Psychology, November 2023, University Library Groningen

    Jennifer Vonk

  34. Aquarium Visitors Catch Some Rays: Rays Are More Active in the Presence of More Visitors

    Article • Animals, November 2023, MDPI AG

    Jennifer Vonk

  35. Borderline Personality Features and Mate Retention Behaviors: The Mediating Roles of Suspicious and Reactive Jealousy

    Article • Sexes, October 2023, MDPI AG

    Jennifer Vonk

  36. Avoidant Attachment Mediates Cultural Differences in Likelihood to Surrender Pets

    Article • Anthrozoös, September 2023, Taylor & Francis

    Jennifer Vonk

  37. Developing a Preference Scale for a Bear: From “Bearly Like” to “Like Beary Much”

    Article • Animals, May 2023, MDPI AG

    Jennifer Vonk

  38. “A (tiger) king's ransom”: Dark personality features predict endorsement of exotic animal exploitation

    Article • Personality and Individual Differences, February 2023, Elsevier

    Jennifer Vonk

  39. “Monkeying around” together facilitates problem solving

    Article • Learning & Behavior, December 2022, Springer Science + Business Media

    Jennifer Vonk

  40. Aroma-dillo or Area-dillo? An examination of armadillos’ sensory modality bias

    Article • Behavioural Processes, October 2022, Elsevier

    Jennifer Vonk

  41. Teamwork Makes the String Work: A Pilot Test of the Loose String Task with African Crested Porcupines (Hystrix cristata)

    Article • Journal of Zoological and Botanical Gardens, September 2022, MDPI AG

    Jennifer Vonk

  42. Understanding the impact of feline immunodeficiency virus on cats' cognitive performance

    Article • Veterinary Record, July 2022, Wiley

    Jennifer Vonk

  43. Narcissism and Self-Esteem Revisited : The Mediating Roles of Perceived Status and Inclusion

    Article • Identity, June 2022, Taylor & Francis

    Jennifer Vonk

  44. Testing for the “Blues”: Using the Modified Emotional Stroop Task to Assess the Emotional Response of Gorillas

    Article • Animals, May 2022, MDPI AG

    Jennifer Vonk

  45. A Food for All Seasons: Stability of Food Preferences in Gorillas across Testing Methods and Seasons

    Article • Animals, March 2022, MDPI AG

    Jennifer Vonk

  46. What's not to like about Likert? Developing a nonverbal animal preference scale (NAPS)

    Article • American Journal of Primatology, January 2022, Wiley

    Jennifer Vonk

  47. In mixed company: two macaws are self-regarding in a symbolic prosocial choice task

    Article • Behavioral Ecology and Sociobiology, January 2022, Springer Science + Business Media

    Jennifer Vonk

  48. Jealousy

    Article • January 2022, Springer Science + Business Media

    Jennifer Vonk

  49. Unobservables

    Article • January 2022, Springer Science + Business Media

    Jennifer Vonk

  50. Discrimination of Emotion

    Article • January 2022, Springer Science + Business Media

    Jennifer Vonk

  51. Bottom-Up Processing

    Article • January 2022, Springer Science + Business Media

    Jennifer Vonk

  52. The evolution of quantitative sensitivity

    Article • Philosophical Transactions of the Royal Society B Biological Sciences, December 2021, Royal Society Publishing

    Jennifer Vonk, Michael Beran

  53. Asexuality and relationship investment: visible differences in relationship investment for an invisible minority

    Article • Psychology and Sexuality, December 2021, Taylor & Francis

    Jennifer Vonk

  54. Silence is Golden: Auditory Preferences in Zoo-housed Gorillas

    Article • Journal of Applied Animal Welfare Science, August 2021, Taylor & Francis

    Jennifer Vonk

  55. Ours is not to reason why: Information seeking across domains.

    Article • Psychology of Religion and Spirituality, August 2021, American Psychological Association (APA)

    Jennifer Vonk

  56. The journey in comparative psychology matters more than the destination.

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

    Jennifer Vonk

  57. Unobservability Hypothesis, The (Vonk and Povinelli, 2006)

    Article • January 2021, Springer Science + Business Media

    Jennifer Vonk

  58. Controversies

    Article • January 2021, Springer Science + Business Media

    Jennifer Vonk

  59. Nonhuman Intelligence

    Article • January 2021, Springer Science + Business Media

    Jennifer Vonk

  60. Corrigendum to “Mirror, mirror on the wall, which form of narcissist knows self and others best of all?” [Pers. Individ. Dif. 54 (2013) 396–401]

    Article • Personality and Individual Differences, January 2021, Elsevier

    Jennifer Vonk

  61. Bearing fruit: Piloting a novel judgment bias task in an American black bear

    Article • Zoo Biology, December 2020, Wiley

    Jennifer Vonk

  62. Autism does not Dictate Children’s Lack of Sharing in a Prosocial Choice Test

    Article • Journal of Autism and Developmental Disorders, September 2020, Springer Science + Business Media

    Jennifer Vonk

  63. In or out: Response slowing across housing conditions as a measure of affect in three Western lowland gorillas (Gorilla gorilla gorilla)

    Article • PeerJ, July 2020, PeerJ

    Jennifer Vonk

  64. Are there Metacognitivists in the Fox Hole? A Preliminary Test of Information Seeking in an Arctic Fox (Vulpes lagopus)

    Article • Behavioral Sciences, April 2020, MDPI AG

    Jennifer Vonk

  65. Peer influence on conformity and confidence in a perceptual judgment task

    Article • Psihologija, January 2020, National Library of Serbia

    Jennifer Vonk

  66. Not by the same token: A female orangutan (Pongo pygmaeus) is selectively prosocial

    Article • Primates, December 2019, Springer Science + Business Media

    Jennifer Vonk

  67. Emotional contagion or sensitivity to behavior in ravens?

    Article • Proceedings of the National Academy of Sciences, August 2019, Proceedings of the National Academy of Sciences

    Jennifer Vonk

  68. Sticks and stones: Associative learning alone?

    Article • Learning & Behavior, July 2019, Springer Science + Business Media

    Jennifer Vonk

  69. A fish eye view of the mirror test

    Article • Learning & Behavior, June 2019, Springer Science + Business Media

    Jennifer Vonk

  70. Believe What I Believe: Correspondence Between the Beliefs of Young Adults and the Perceived Beliefs of Their Caregivers

    Article • The Journal of Genetic Psychology, April 2019, Taylor & Francis

    Jennifer Vonk

  71. The “Sh-Ape Bias” in Non-Linguistic Categorization: Comparisons between Children and Other Apes

    Article • Journal of Cognition and Development, April 2019, Taylor & Francis

    Jennifer Vonk

  72. Unobservables

    Article • January 2019, Springer Science + Business Media

    Jennifer Vonk

  73. Fear the unseen: supernatural belief and agency detection in virtual reality

    Article • Religion Brain & Behavior, October 2018, Taylor & Francis

    Todd Shackelford, Jennifer Vonk

  74. The Evolution of Human Female Sexual Orientation

    Article • Evolutionary Psychological Science, August 2018, Springer Science + Business Media

    Jennifer Vonk

  75. DSM-5 pathological personality traits are associated with the ability to understand the emotional states of others

    Article • Journal of Research in Personality, August 2018, Elsevier

    Jennifer Vonk

  76. Young Children's Theory of Mind Predicts More Sharing With Friends Over Time

    Article • Child Development, June 2018, Wiley

    Jennifer Vonk

  77. Are chimpanzees “stuck” on their “selves” in video?

    Article • Learning & Behavior, June 2018, Springer Science + Business Media

    Jennifer Vonk

  78. Spatial representation of magnitude in humans (Homo sapiens), Western lowland gorillas (Gorilla gorilla gorilla), and American black bears (Ursus americanus)

    Article • Animal Cognition, May 2018, Springer Science + Business Media

    Jennifer Vonk

  79. I say thee “neigh”: Rescued equids are optimistic in a judgment bias test

    Article • Journal of Veterinary Behavior, May 2018, Elsevier

    Jennifer Vonk

  80. Social tolerance in not-so-social pumas

    Article • Learning & Behavior, January 2018, Springer Science + Business Media

    Jennifer Vonk

  81. Behavioral and hormonal responses to the availability of forage material in Western lowland gorillas (Gorilla gorilla gorilla )

    Article • Zoo Biology, December 2017, Wiley

    Jennifer Vonk

  82. Visual acuity in the striped skunk (Mephitis mephitis).

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

    Jennifer Vonk

  83. Believing in other minds: Accurate mentalizing does not predict religiosity

    Article • Personality and Individual Differences, September 2017, Elsevier

    Jennifer Vonk

  84. The relationship between approval-based contingent self-esteem and conformity is influenced by sex and task difficulty

    Article • Personality and Individual Differences, September 2017, Elsevier

    Jennifer Vonk

  85. Ambiguous Results When Using the Ambiguous-Cue Paradigm to Assess Learning and Cognitive Bias in Gorillas and a Black Bear

    Article • Behavioral Sciences, August 2017, MDPI AG

    Jennifer Vonk

  86. Personality in Nonhuman Animals

    Article • January 2017, Springer Science + Business Media

    Jennifer Vonk

  87. Stanley (Stan) Kuczaj II (1950–2016).

    Article • American Psychologist, January 2017, American Psychological Association (APA)

    Jennifer Vonk

  88. Advances in Animal Cognition

    Article • Behavioral Sciences, November 2016, MDPI AG

    Jennifer Vonk

  89. Not So Cold-blooded: Narcissistic and Borderline Personality Traits Predict Attachment to Traditional and Non-traditional Pets

    Article • Anthrozoös, November 2016, Taylor & Francis

    Jennifer Vonk

  90. Dynamic Duos? Jamaican Fruit Bats (Artibeus jamaicensis) Do Not Show Prosocial Behavior in a Release Paradigm

    Article • Behavioral Sciences, November 2016, MDPI AG

    Jennifer Vonk

  91. Picture object recognition in an American black bear (Ursus americanus)

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

    Jennifer Vonk

  92. Bigger brains may make better problem-solving carnivores

    Article • Learning & Behavior, April 2016, Springer Science + Business Media

    Jennifer Vonk

  93. Spitefulness and deficits in the social–perceptual and social–cognitive components of Theory of Mind

    Article • Personality and Individual Differences, March 2016, Elsevier

    Jennifer Vonk

  94. Apes have eyes to the future

    Article • Learning & Behavior, February 2016, Springer Science + Business Media

    Jennifer Vonk

  95. Education to Action: Improving Public Perception of Bats

    Article • Animals, January 2016, MDPI AG

    Jennifer Vonk

  96. Unobservability Hypothesis, The (Vonk and Povinelli, 2006)

    Article • January 2016, Springer Science + Business Media

    Jennifer Vonk

  97. Abstract Concept Formation

    Article • January 2016, Springer Science + Business Media

    Jennifer Vonk

  98. Mindreading in the dark: Dark personality features and theory of mind

    Article • Personality and Individual Differences, December 2015, Elsevier

    Jennifer Vonk

  99. If We Build It Comparative Psychologists Will Come. Commentary: A Crisis in Comparative Psychology: Where Have All the Undergraduates Gone?

    Article • Frontiers in Psychology, November 2015, Frontiers

    Jennifer Vonk

  100. Do dogs (Canis lupus familiaris) prefer family?

    Article • Behavioural Processes, October 2015, Elsevier

    Jennifer Vonk

  101. Dark Personality Features and Emotion Dysregulation

    Article • Journal of Social and Clinical Psychology, October 2015, Guilford Publications

    Jennifer Vonk

  102. Man’s other best friend: domestic cats (F. silvestris catus) and their discrimination of human emotion cues

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

    Jennifer Vonk

  103. Cognitive bias in rats is not influenced by oxytocin

    Article • Frontiers in Psychology, September 2015, Frontiers

    Jennifer Vonk

  104. Religiosity and the formulation of causal attributions

    Article • Thinking & Reasoning, August 2015, Taylor & Francis

    Jennifer Vonk

  105. Adults’ responsiveness to children’s facial expressions

    Article • Journal of Experimental Child Psychology, July 2015, Elsevier

    Jennifer Vonk

  106. Spitefulness and moral values

    Article • Personality and Individual Differences, April 2015, Elsevier

    Jennifer Vonk

  107. Corvid Cognition: Something to Crow About?

    Article • Current Biology, January 2015, Elsevier

    Jennifer Vonk

  108. Evolution of Cognition

    Article • January 2015, Elsevier

    Jennifer Vonk

  109. The Evolution of Social Cognition

    Article • January 2015, Springer Science + Business Media

    Jennifer Vonk

  110. Social and nonsocial category discriminations in a chimpanzee (Pan troglodytes) and American black bears (Ursus americanus)

    Article • Learning & Behavior, June 2014, Springer Science + Business Media

    Jennifer Vonk

  111. Orangutans (Pongo abelii) and a gorilla (Gorilla gorilla gorilla) match features in familiar and unfamiliar individuals

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

    Jennifer Vonk

  112. Quantity estimation and comparison in western lowland gorillas (Gorilla gorilla gorilla)

    Article • Animal Cognition, November 2013, Springer Science + Business Media

    Jennifer Vonk, Michael Beran

  113. Self-esteem instability and academic outcomes in American and Chinese college students

    Article • Journal of Research in Personality, October 2013, Elsevier

    Jennifer Vonk

  114. Matching based on biological categories in Orangutans (Pongo abelii) and a Gorilla (Gorilla gorilla gorilla)

    Article • PeerJ, September 2013, PeerJ

    Jennifer Vonk

  115. Quantity matching by an orangutan (Pongo abelii)

    Article • Animal Cognition, July 2013, Springer Science + Business Media

    Jennifer Vonk

  116. An Introduction to Comparative Evolutionary Psychology

    Article • Evolutionary Psychology, July 2013, SAGE Publications

    Jennifer Vonk

  117. Natural category discrimination in chimpanzees (Pan troglodytes) at three levels of abstraction

    Article • Learning & Behavior, February 2013, Springer Science + Business Media

    Jennifer Vonk

  118. Mirror, mirror on the wall, which form of narcissist knows self and others best of all?

    Article • Personality and Individual Differences, February 2013, Elsevier

    Jennifer Vonk

  119. Concept formation in American black bears, Ursus americanus

    Article • Animal Behaviour, October 2012, Elsevier

    Jennifer Vonk

  120. Bears ‘count’ too: quantity estimation and comparison in black bears, Ursus americanus

    Article • Animal Behaviour, July 2012, Elsevier

    Jennifer Vonk, Michael Beran

  121. The Oxford Handbook of Comparative Evolutionary Psychology

    Article • February 2012, Oxford University Press (OUP)

    Jennifer Vonk

  122. Spatial memory in captive American black bears (Ursus americanus).

    Article • Journal of Comparative Psychology, January 2012, American Psychological Association (APA)

    Jennifer Vonk

  123. Narcissism and recollections of early life experiences

    Article • Personality and Individual Differences, December 2011, Elsevier

    Jennifer Vonk

  124. The Ghosts in the Computer: The Role of Agency and Animacy Attributions in “Ghost Controls”

    Article • PLOS One, November 2011, PLOS

    Jennifer Vonk

  125. The phylogenetic roots of cognitive dissonance.

    Article • Journal of Comparative Psychology, January 2010, American Psychological Association (APA)

    Jennifer Vonk

  126. Do chimpanzees know what others can and cannot do? Reasoning about ‘capability’

    Article • Animal Cognition, September 2008, Springer Science + Business Media

    Jennifer Vonk

  127. Chimpanzees do not take advantage of very low cost opportunities to deliver food to unrelated group members

    Article • Animal Behaviour, May 2008, Elsevier

    Jennifer Vonk

  128. Do chimpanzees learn reputation by observation? Evidence from direct and indirect experience with generous and selfish strangers

    Article • Animal Cognition, March 2008, Springer Science + Business Media

    Jennifer Vonk

  129. The Puzzle of Human EvolutionThe Evolution of Thought. Edited by AnneE. Russon and DavidR. Begun. Cambridge: Cambridge University Press, 2004.

    Article • Current Anthropology, June 2006, University of Chicago Press

    Jennifer Vonk

  130. Chimpanzee choice and prosociality

    Article • Nature, April 2006, Springer Science + Business Media

    Jennifer Vonk

  131. Chimpanzee choice and prosociality (Reply)

    Article • Nature, April 2006, Springer Science + Business Media

    Jennifer Vonk

  132. Automatic retrieval in directed forgetting

    Article • Memory & Cognition, April 2006, Springer Science + Business Media

    Jennifer Vonk

  133. Chimpanzees are indifferent to the welfare of unrelated group members

    Article • Nature, October 2005, Springer Science + Business Media

    Jennifer Vonk

  134. Measuring automatic retrieval: a comparison of implicit memory, process dissociation, and speeded response procedures

    Article • Acta Psychologica, July 2005, Elsevier

    Jennifer Vonk

  135. We Don't Need a Microscope to Explore the Chimpanzee's Mind

    Article • Mind & Language, February 2004, Wiley

    Jennifer Vonk

  136. Levels of Abstraction in Orangutan (Pongo abelii) Categorization.

    Article • Journal of Comparative Psychology, January 2004, American Psychological Association (APA)

    Jennifer Vonk

  137. Chimpanzee minds: suspiciously human?

    Article • Trends in Cognitive Sciences, April 2003, Elsevier

    Jennifer Vonk

  138. Gorilla (Gorilla gorilla gorilla) and orangutan (Pongo abelii) understanding of first- and second-order relations

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

    Jennifer Vonk

  139. NATURAL CONCEPTS IN A JUVENILE GORILLA (GORILLA GORILLA GORILLA) AT THREE LEVELS OF ABSTRACTION

    Article • Journal of the Experimental Analysis of Behavior, November 2002, Wiley

    Jennifer Vonk