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Submissions from 2014

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Emotional Engagements Predict and Enhance Social Cognition in Young Chimpanzees, Kim A. Bard, Roger Bakeman, Sarah T. Boysen, and David A. Leavens

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Apes Communicate about Absent and Displaced Objects: Methodology Matters, Heidi Lyn, Jamie L. Russell, David A. Leavens, Kim A. Bard, Sarah T. Boysen, Jennifer A. Schaeffer, and William D. Hopkins

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Semi-Wild Chimpanzees Open Hard-Shelled Fruits Differently Across Communities, Bruce Rawlings, Marina Davilla-Ross, and Sarah T. Boysen

Submissions from 2011

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Signs of Mood and Anxiety Disorders in Chimpanzees, Hope Ferdowsian, Debra Durham, Charles Kimwele, Godelieve Kranendonk, Emily Otali, Timothy Akugizibwe, J. B. Mulcahy, Lilly Ajarova, and Cassie Meré Johnson

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Pantomime in Great Apes: Evidence and Implications, Ann E. Russon and Kristin Andrews

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Comprehension of Functional Support by Enculturated Chimpanzees Pan troglodytes, Anna M. Yocom and Sarah T. Boysen

Submissions from 2010

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Capuchins (Cebus apella) Can Solve a Means-End Problem, Anna M. Yocom and Sarah T. Boysen

Submissions from 2009

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Constructive and Deconstructive Tool Modification by Chimpanzees (Pan troglodytes), Amanda E. Bania, Stephany Harris, Hannah R. Kinsley, and Sarah T. Boysen

Submissions from 2008

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Visual Attention and its Relation to Knowledge States in Chimpanzees, Pan troglodytes, Megan J. Bulloch, Sarah T. Boysen, and Ellen E. Furlong

Submissions from 2005

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Chimpanzee Theory of Mind: Looking in All the Wrong Places?, Kristin Andrews

Submissions from 2003

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Nest Building in Captive Gorilla gorilla gorilla, Kristen E. Lukas, Tara S. Stoinski, Kyle Burks, Rebecca Snyder, Sarah Bexell, and Terry L. Maple

Submissions from 2002

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Chimpanzees (Pan troglodytes) Recognize Spatial and Object Correspondences Between a Scale Model and its Referent, Valerie A. Kuhlmeier and Sarah T. Boysen

Submissions from 2001

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Size Matters: Impact of Item Size and Quantity on Array Choice by Chimpanzees (Pan troglodytes), Sarah T. Boysen, Gary G. Berntson, and Kimberly L. Mukobi

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The Effect of Response Contingencies on Scale Model Task Performance by Chimpanzees (Pan troglodytes), Valerie A. Kuhlmeier and Sarah T. Boysen

Submissions from 2000

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Primate Numerical Competence: Contributions Toward Understanding Nonhuman Cognition, Sarah T. Boysen and Karen I. Hallberg

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Primate Numerical Competence: Contributions Toward Understanding Nonhuman Cognition, Sarah T. Boysen and Karen I. Hallberg

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Spontaneous Discrimination of Natural Stimuli by Chimpanzees (Pan troglodytes), David A. Brown and Sarah T. Boysen

Submissions from 1999

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Tool Use in Captive Gorillas, Sarah T. Boysen, Valerie A. Kuhlmeier, Peter Halliday, and Yolanda Muldonado Halliday

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Overcoming Response Bias Using Symbolic Representations of Number by Chimpanzees (Pan troglodytes), Sarah T. Boysen, Kimberly L. Mukobi, and Gary G. Berntson

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Scale-Model Comprehension by Chimpanzees (Pan troglodytes), Valerie A. Kuhlmeier, Sarah T. Boysen, and Kimberly L. Mukobi

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A Preliminary Investigation of the Construct of Psychopathic Personality (Psychopathy) in Chimpanzees (Pan troglodytes), Scott O. Lilienfeld, Jonathan Gershon, Marshall Duke, Lori Marino, and Frans B. M. de Waal

Submissions from 1998

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Planum temporale asymmetries in great apes as revealed by magnetic resonance imaging (MRI), William D. Hopkins, Lori Marino, James K. Rilling, and Leslie A. MacGregor

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fMRI of Monkey Visual Cortex, Lisa Stefanacci, Paul Reber, Jennifer Costanza, Eric Wong, Richard Buxton, Stuart Zola, Larry R. Squire, and Thomas D. Albright

Submissions from 1996

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Quantity-Based Interference and Symbolic Representations in Chimpanzees (Pan troglodytes), S. T. Boysen, G. G. Berntson, M. B. Hannan, and J. T. Cacioppo

Submissions from 1995

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Responses to Quantity: Perceptual Versus Cognitive Mechanisms in Chimpanzees (Pan Troglodytes), Sarah T. Boysen and Gary G. Berntson

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Indicating Acts During Counting by a Chimpanzee (Pan troglodytes), Sarah T. Boysen, Gary G. Berntson, Traci A. Shreyer, and Michelle B. Hannan

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Comprehension of Cause-Effect Relations in a Tool-Using Task by Chimpanzees (Pan troglodytes), Luca Limongelli, Sarah T. Boysen, and Elisabetta Visalberghi

Submissions from 1994

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Individual Differences in the Cognitive Abilities of Chimpanzees, Sarah T. Boysen

Submissions from 1993

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Vocal Perception: Brain Event-Related Potentials in a Chimpanzee, Gary G. Berntson, Sarah T. Boysen, and Michael W. Torello

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Counting in Chimpanzees: Nonhuman Principles and Emergent Properties of Number, Sarah T. Boysen

Submissions from 1992

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Counting as the Chimpanzee Views It, Sarah T. Boysen

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Comprehension of Role Reversal in Chimpanzees: Evidence of Empathy?, Daniel J. Povinelli, Kurt E. Nelson, and Sarah T. Boysen

Submissions from 1990

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Inferences About Guessing and Knowing by Chimpanzees (Pan troglodytes), Daniel J. Povinelli, Kurt E. Nelson, and Sarah T. Boysen

Submissions from 1989

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Specificity of the Cardiac Response to Conspecific Vocalizations in Chimpanzees, Gary G. Berntson and Sarah T. Boysen

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Conspecific Recognition in the Chimpanzee (Pan troglodytes): Cardiac Responses to Significant Others, Sarah T. Boysen and Gary G. Berntson

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Numerical Competence in a Chimpanzee (Pan troglodytes), Sarah T. Boysen and Gary G. Berntson

Submissions from 1986

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Cardiac Correlates of Individual Recognition in the Chimpanzee (Pan troglodytes), Sarah T. Boysen and Gary G. Berntson

Submissions from 1985

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Visual Evoked Potentials in the Great Apes, Sarah T. Boysen and Gary G. Berntson

Submissions from 1983

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Environmental Psychology and Great Ape Reproduction, Terry L. Maple

Submissions from 1981

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Social and Cognitive Capabilities of Nonhuman Primates: Lessons from the Wild to Captivity, William C. McGrew

Submissions from 1980

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Yawning in an Old World Monkey, Macaca nigra (Primates: Cercopithecidae), John Hadidian