Brain, Behavior, and the Emergence of Cognitive Competence

A program-project grant supported by the National Institute of Child Health and Human Development (HD-38051)

Research Updates:

B2EC2 Publications

In Press | 2009 | 2008 |2007 | 2006 | 2005 | 2004 | 2003| 2002 | 2001 | 2000 | 1999


In Press

Beran, M. J. (in press). Chimpanzees as natural accountants. Human Evolution.

Beran, M. J., Smith, J. D., Coutinho, M. V. C., Couchman, J. J., & Boomer, J. (in press). The psychological organization of “uncertainty” responses and “middle” responses: A dissociation in capuchin monkeys (Cebus apella). Journal of Experimental Psychology: Animal Behavior Processes.

Beran, M. J., Evans, T. A., & Ratliff, C. L. (in press). Perception of food amounts by chimpanzees (Pan troglodytes): The role of magnitude, contiguity, and wholeness. Journal of Experimental Psychology: Animal Behavior Processes.

Brosnan, S. F., & Beran, M. J. (in press). Trade between conspecifics in chimpanzees (Pan troglodytes). Journal of Comparative Psychology.

Beran, M. J., Couchman, J. J., Coutinho, M. V. C., Boomer, J., & Smith, J. D. (in press). Metacognition in nonhumans: Methodological and theoretical issues. In A. Efklides & P. Misailidi (Eds.), Trends and prospects in metacognition research. Springer.

Beran, M. J., Coutinho, M. V. C., Couchman, J. J., Boomer, J., Washburn, D. A., & Smith, J. D. (in press). Metacognition in animals. In C. B. Larson (Ed.), Metacognition: New research developments. New York: Nova Science Publishers.

Beran, M. J., Evans, T. A., & Washburn, D. A. (in press). Comparing methods for assessing learning and cognition in primates. In Primatology: Theories, methods and research. New York: Nova Science Publishers.

Harris, E. H., Gulledge, J. P., Beran, M. J., & Washburn, D. A. (in press). What do Arabic numerals mean to macaques? Journal of Experimental Psychology: Animal Behavior Processes.

Smith, J. D., Beran, M. J., Crossley, M., Boomer, J., & Ashby, F. G. (in press).  Implicit and explicit category learning by macaques (Macaca mulatta) and humans (Homo sapiens).  Journal of Experimental Psychology: Animal Behavior Processes.

Smith, J. D., Beran, M. J., Couchman, J. J., Coutinho, M. V. C., & Boomer, J. (in press).  Animal metacognition: Problems and prospects. Comparative Cognition and Behavior Reviews.

2009

Beran, M. J., Evans, T. A., & Harris, E. H. (2009). When in doubt, chimpanzees rely on estimates of past reward amounts. Proceedings of the Royal Society of London B, 276, 309-314.

Beran, M. J., & Evans, T. A. (2009). Delay of gratification by chimpanzees (Pan troglodytes) in working and waiting situations. Behavioural Processes, 80, 117-121.

Beran, M. J., Ratliff, C. L., & Evans, T. A. (2009). Natural choice in chimpanzees (Pan troglodytes): Perceptual and temporal effects on selective value. Learning and Motivation, 40, 186-196.

Couchman, J. J., Countinho, M. V. C., Beran, M. J., & Smith, J. D. (2009).  Metacognition is prior. Behavioral and Brain Sciences, 32, 142,143.

Hoffman, M. L., Beran, M. J., & Washburn, D. A. (2009).  Memory for 'what,' 'where,' and 'when' information in rhesus monkeys (Macaca mulatta).  Journal of Experimental Psychology: Animal Behavior Processes, 35, 143-152.

Evans, T. A., Beran, M. J., Harris, E. H. & Rice, D. F. (2009). Quantity judgments of sequentially presented food items by capuchin monkeys (Cebus apella). Animal Cognition, 12, 97-105

2008

Beran, M. J., Klein, E. D., & Evans, T. A. (2008). Monkeys plan and remember future responses. Abstracts of the Psychonomic Society, 13, 39.

Beran, M. J. (2008). Capuchin monkeys (Cebus apella) succeed in a test of quantity conservation. Animal Cognition, 11, 109-116.

Beran, M. J. (2008). Monkeys (Macaca mulatta and Cebus apella) track, enumerate, and compare multiple sets of moving items. Journal of Experimental
Psychology: Animal Behavior Processes, 34, 63-74.

Beran, M. J., Evans, T. A., & Harris, E. H. (2008). Perception of food amount by chimpanzees based on the number, size, contour length, and visibility of items. Animal Behaviour, 75, 1793-1802.

Beran, M. J., Evans, T. A., Leighty, K. A., Harris, E. H., & Rice, D. (2008). Summation and quantity judgments of sequentially presented sets by capuchin monkeys (Cebus apella). American Journal of Primatology, 70, 191-194.

Beran, M. J., Klein, E. D., Evans, T. A., Chan, B., Flemming, T. M., Harris, E. H., Washburn, D. A., & Rumbaugh, D. M. (2008). Discrimination reversal learning in capuchin monkeys (Cebus apella). Psychological Record, 58, 3-14.

Beran, M. J., Johnson-Pynn, J. S., & Ready, C. (2008). Quantity representation in pre-school children and rhesus monkeys: Linear versus logarithmic scales. Journal of Experimental Child Psychology, 100, 225-233.

Beran, M. J. (2008). The evolutionary and developmental foundations of mathematics. PloS Biology, 6, e19.

Beran, M. J., Harris, E. H., Evans, T. A., Klein, E. D., Chan, B., Flemming, T. M., & Washburn, D. A. (2008). Ordinal judgments of symbolic stimuli by capuchin monkeys (Cebus apella) and rhesus monkeys (Macaca mulatta): The effects of differential and nondifferential reward. Journal of Comparative Psychology, 122, 52-61.

Beran, M. J., Klein, E. D., Evans, T. A., Chan, B., Flemming, T. M., Harris, E. H., Washburn, D. A., & Rumbaugh, D. M. (2008). Discrimination reversal learning in capuchin monkeys (Cebus apella). Psychological Record, 58, 3-14.

Brosnan, S. F., Grady, M. F., Lambeth, S. P., Schapiro, S. J., & Beran, M. J. (2008). Chimpanzee autarky. PloS ONE, 3, 1518.

Evans, T. A., Beran, M. J., Chan, B., Klein, E. D., & Menzel, C. R. (2008). An efficient computerized testing method for the capuchin monkey (Cebus apella): Adaptation of the LRC-CTS to a socially housed nonhuman primate species. Behavior Research Methods, 40, 590-596.

Flemming, T. M., Beran, M. J., Thompson, R. K. R., Kleider, H. M., & Washburn, D. A. (2008). What meaning means for same and different: Analogical reasoning in humans, chimpanzees, and rhesus monkeys. Journal of Comparative Psychology, 122, 176-185.

Heimbauer, L. A., Beran, M. J, & Owren, M. J. (2008). Speech perception in a language-trained chimpanzee (Pan troglodytes). Journal of the Acoustical Society of America, 124, 2460.

Klein, E. D., Beran, M. J., Evans, T. A., & Schultz, N. A. (2008). Primate decision making in the Monty Hall three-door problem. Abstracts of the Psychonomic Society, 13, 12.

Rumbaugh, D. M., Washburn, D. A., King, J. E., Beran, M. J., & Gould, K. L. (2008). Why some apes imitate and/or emulate observed behavior and others do not: Fact, theory, and implications for our kind. Journal of Cognitive Education and Psychology, 7, 100-110.

Smith, J. D., Beran, M. J., Coutinho, M. V. C., Couchman, J. J. (2008). The comparative study of metacognition: Sharper paradigms, safer inferences. Psychonomic Bulletin and Review, 15, 679-691.

2007

Beran, M. J. (2007). Rhesus monkeys (Macaca mulatta) succeed on a computerized test designed to assess conservation of discrete quantity. Animal Cognition, 10, 37-45.

Beran, M. J. (2007). Rhesus monkeys (Macaca mulatta) enumerate sequentially presented sets of items using analog numerical representations. Journal of Experimental Psychology: Animal Behavior Processes, 33, 42-54.

Beran, M. J., Rumbaugh, D. M., & Washburn, D. A. (2007). Rhesus monkeys (Macaca mulatta) maintain learning set despite second-order stimulus-response spatial discontiguity. Psychological Record, 57, 9-22.

Beran, M. J., Washburn, D. A., & Rumbaugh, D. M. (2007). The Stroop Effect in color-naming of color-word lexigrams by a chimpanzee. Journal of General Psychology, 134, 217-228.

Evans, T. A., & Beran, M. J. (2007). Delay of gratification and delay maintenance by rhesus macaques (Macaca mulatta). Journal of General Psychology, 134, 199-216.

Evans, T. A. (2007). Performance in a computerized self-control task by rhesus macaques (Macaca mulatta): The combined influence of effort and delay. Learning and Motivation, 38, 342-357.

Evans, T. A., & Beran, M. J. (2007). Chimpanzees use self-distraction to cope with impulsivity. Biology Letters, 3, 599-602.

Flemming, T. M., Beran, M. J., & Washburn, D. A. (2007). Disconnect in concept learning by rhesus monkeys: Judgment of relations and relations-between-relations. Journal of Experimental Psychology: Animal Behavior Processes, 33, 55-63.

Harris, E. H., Beran, M. J., & Washburn, D. A. (2007). Ordinal list integration for symbolic, arbitrary, and analog stimuli by rhesus macaques (Macaca mulatta). Journal of General Psychology, 134, 183-197.

Harris, E. H., Washburn, D. A., Beran, M. J., & Sevcik, R. A. (2007). Rhesus monkeys (Macaca mulatta) select Arabic numerals or visible quantities corresponding to a number of sequentially completed maze trials. Learning and Behavior, 35, 53-59.

Rumbaugh, D. M., King, J. E., Washburn, D. A., Beran, M. J., & Gould, K. L. (2007). A Salience theory of learning and behavior with perspectives on neurobiology and cognition. International Journal of Primatology, 28, 973-996.

Washburn, D. A., Gulledge, J. P., James, F. J., & Rumbaugh, D. M. (2007). A species difference in visuospatial working memory: Does language link "what" with "where"? International Journal of Comparative Psychology, 20, 54-63.

2006

Beran, M. J. (2006). Quantity perception by adult humans (Homo sapiens), chimpanzees (Pan troglodytes), and rhesus macaques (Macaca mulatta) as a function of stimulus organization. International Journal of Comparative Psychology, 19, 386-397.

Beran, M. J., & Evans, T. A. (2006). Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): The effects of delayed reward visibility, experimenter presence, and extended delay intervals. Behavioural Processes, 73, 315-324.

Beran, M. J., Taglialatela, L. B., Flemming, T. M., James, F. M. & Washburn, D. A. (2006). Nonverbal estimation during numerosity judgements by adult humans. Quarterly Journal of Experimental Psychology, 59, 2066-2083.

Beran, M. J., Smith, J. D., Redford, J. S., & Washburn, D. A. (2006). Rhesus macaques (Macaca mulatta) monitor uncertainty during numerosity judgments. Journal of Experimental Psychology: Animal Behavior Processes, 32, 111-119.

Hoffman, M. L., & Beran, M. J. (2006). Chimpanzees (Pan troglodytes) remember the location of a hidden food item after altering their orientation to a spatial array. Journal of Comparative Psychology, 120, 389-393.

Smith, J. D., Beran, M. J., Redford, J. S., & Washburn, D. A. (2006). Dissociating uncertainty states and reinforcement signals in the comparative study of metacognition. Journal of Experimental Psychology: General, 135, 282-297.

Washburn, D. A., Smith, J. D., & Shields, W. E. (2006). Rhesus monkeys (Macaca mulatta) immediately generalize the uncertain response. Journal of Experimental Psychology: Animal Behavior Processes, 32, 185-189.

2005

Beran, M. J., Beran, M. M., Harris, E. H., & Washburn, D. A. (2005). Ordinal judgments and summation of nonvisible sets of food items by two chimpanzees (Pan troglodytes) and a rhesus macaque (Macaca mulatta). Journal of Experimental Psychology: Animal Behavior Processes, 31, 351-362.

Beran, M. J., Beran, M. M., & Menzel, C. R. (2005). Spatial memory and monitoring of hidden items through spatial displacements by chimpanzees (Pan troglodytes). Journal of Comparative Psychology, 119, 14-22.

Harris, E. H. & Washburn, D. A. (2005). Macaques' (Macaca mulatta) use of numerical cues in maze trials. Animal Cognition, 8, 190-199.

Hopkins, W. D., & Cantalupo, C. (2005). Individual and setting differences in the hand preference of chimpanzees (Pan troglodytes): A critical analysis and some alternative explanations. Laterality, 10, 65-80.

Raz, A., Fan, J., & Posner, M.I. (2005). Hypnotic suggestion reduces conflict in the human brain. Prcoeedings of the National Academy of Sciences, 102, 9978-9983.

Rueda, M. R., Rothbart, M. K., McCandliss, B. D., Saccomanno, L., & Posner, M. I. (2005). Training, maturation, and genetic influences on the development of executive attention. Prcoeedings of the National Academy of Sciences, 102, 14931-14936.

Smith, J. D., Redford, J., Gent, L., & Washburn, D. A. (2005). Visual search and the collapse of categorization. Journal of Experimental Psychology: General, 134, 443-460.

Smith, J. D., & Washburn, D. A. (2005). Uncertanty monitoring and metacognition by animals. Current Directions in Psychological Science, 14, 19-24.

2004

Beran, M. J., & Rumbaugh, D. M. (2004). Working to understand whether memories ever leave – with a trace. Review of Memories are made of this: How memory works in humans and animals by Rusiko Bourtchouladze. Contemporary Psychology: APA Review of Books, 49, 433-434.

Beran, M. M., & Beran, M. J. (2004). The roots of human behavior are found in nonhuman primates. Review of Roots of Human Behavior by Barbara J. King. American Journal of Primatology, 63, 33-35.

Beran, M. J., & Beran, M. M. (2004). Chimpanzees remember the results of one-by-one addition of food items to sets. Psychological Science, 15, 94-99.

Beran, M. J. (2004). Long-term retention of the differential values of Arabic numerals by chimpanzees (Pan troglodytes). Animal Cognition, 7, 86-92.

Beran, M. J. (2004). Chimpanzees (Pan troglodytes) respond to non-visible sets after one-by-one additionand removal of items. Journal of Comparative Psychology, 118, 25-36.

Beran, M. J., Pate, J. L., Washburn, D. A., & Rumbaugh, D. M. (2004). Sequential responding and planning in chimpanzees (Pan troglodytes) and rhesus macaques (Macaca mulatta). Journal of Experimental Psychology: Animal Behavior Processes, 30, 203-212.

Fernandez-Carriba, S., Loeches, A., Morcillo, A., Washburn, D. A., & Hopkins, W. D. (2004). Human assessment of chimpanzee facial asymmetry. Laterality, 9, 1-17.

2003

Beran, M. J. (2003). Studying delay of gratification in animals. In S. P. Shohov (Ed.), Advances in Psychology Research, Vol 24 (161-179). New York: Nova Science Publishers.

Beran, M. J., Washburn, D. A., & Kleinman, S. (2003). Attention Network Task performance by children and rhesus monkeys. Abstracts of the Psychonomic Society, 8, 38.

Bovet, D. & Washburn, D. A. (2003). Social categorization by macaques. Journal of Comparative Psychology, 17, 400-405.

Cantalupo, C., Pilcher, D., & Hopkins, W. D. (In press). Are planum temporale and Sylvian fissure asymmertries directly related? A MRI study in great apes. Neuropsychologia, 41, 1975-1981.

King, J. E., & Rumbaugh , D. M., (2003). [Review of Love at goon park: Harry Harlow and the science of affection] The New England Journal of Medicine, 348, 670-671.

Hopkins, W. D., & Cantalupo, C. (2003). Does variation in sample size explain individual differences in hand preference of chimpanzees (Pan troglodytes)? An empirical study and reply to Palmer. American Journal of Physical Anthropology, 121, 378-381.

Hopkins, W. D., Pilcher, D. L., & Cantalupo, D. (2003). A comparative review of neuroanatomical asymmetries in nonhuman primates: Implications for the evolution of handedness and other functional asymmetries. In D. Maestripietri (Ed.), Primate Psychology. Cambridge, MA: Harvard University Press.

Menzel, C. R., Beran, M. J., Kelley, J. W., & Sanchez, I. C. (2003). A chimpanzee’s recall and reporting of multiple hidden objects. American Journal of Primatology, 60, 45-46.

Rumbaugh, D. M. (2003). A perspective of Human and Chimpanzee Cognition. [Review of The cultural origins of human cognition: Comparative perspectives] Contemporary Psychology, 48, 5-8.

Rumbaugh, D. M. (2003). [Media review The disenchanted forest]. American Journal of Primatology, 60, 119-120.

Rumbaugh, D. M. (2003). [Review of book A perspective of human and chimpanzee cognition]. Contemporary Psychololgy: APA Review of Books, 48, 5-8.

Rumbaugh, D. M., & Beran, M. J. (2003). Animal language. In L. Nadel (Ed.), Encyclopedia of Cognitive Science (pp. 138-141). London: Macmillan.

Rumbaugh, D. M., & Beran, M. J. (2003). Language acquisition by animals. In L. Nadel (Ed.), Encyclopedia of Cognitive Science (pp. 700-707). London: Macmillan.

Rumbaugh, D. M., Beran, M. J., & Pate, J. L. (2003). Uncertainty monitoring may promote emergents. Behavioral and Brain Sciences, 26, 353.

Rumbaugh, D. M., Beran, M. J., & Savage-Rumbaugh, E. S. (In press). Language. In D. Maestripieri (Ed.), Primate psychology. Cambridge, MA: Harvard University Press.

Rumbaugh, D. M. & Hillix, W. A. (2003). Animal bodies, human minds. New York: Kluwer/Academic Press.

Rumbaugh, D. M. & Washburn, D. A. (2003). Intelligence of apes and other rational beings. New Haven, CT: Yale University Press.

Smith, J. D., Shields, W. E., & Washburn, D. A. (2003). A comparative approach to metacognition and uncertainty monitoring. Behavioral and Brain Sciences, 26, 317-373.

Washburn, D. A. (2003). The games psychologists play (and the data they provide). Behavior Research Methods, Instruments, and Computers, 35, 185-193.

Washburn, D. A., & Astur R. S. (2003). Exploration of virtual mazes by macaques. Animal Cognition, 6, 161-168.

Washburn, D. A., Gulledge, J. P., & Martin, B. (2003). A species difference in visuospatial memory: A failure of memory for what, where, or what is where? International Journal of Comparative Psychology, 16, 209-225.

Washburn, D. A. (2003). Overlapping territories: Understanding behavior across subdisciplines of psychology (Introduction to the special issue). International Journal of Comparative Psychology, 16, iv-v.

2002

Beran, M. J., & Washburn, D. A. (2002). Chimpanzee responding during matching to sample: Control by exclusion. Journal of the Experimental Analysis of Behavior, 78, 497-508.

Beran, M. J. (2002). Maintenance of self-imposed delay of gratification by four chimpanzees (Pan troglodytes) and an orangutan (Pongo pygmaeus). Journal of General Psychology, 129, 49-66.

Cantalupo, C., & Ward, J.P. (2002). Function of head-cocking in the small-eared bushbaby (Otolemur garnettii). International Journal of Primatology, 23, 203-221.

Cantalupo, C., Ward, J.P., & Franceschetti D.R. (2002). Lateralized Reaching as Dynamical Symmetry Breaking in the Bushbaby (Otolemur garnettii): Preliminary Evidence. Brain & Cognition, 48, 297-304.

Hopkins, W.D., Cantalupo, C., Wesley, M.J., Hostetter, A.B., Pilcher, D.L. (2002). Grip morphology and hand use in chimpanzees (Pan troglodytes): evidence of a left hemisphere specialization in motor skill. Journal of Experimental Psychology-General, 131, 412-423.

Hopkins, W. D., & Washburn, D. A., (2002) The Global-to-Local Precedence in Perception by Humans, Chimpanzees, and Macaques. Animal Cognition, 5, 27-31.

Rumbaugh, D. M. (2002). Emergents and rational behaviorism. Eye on Psi Chi, 6, 8-14.

Washburn, D. A., (2002). These apes are great, too! A review of The mentalities of gorillas and orangutans: Comparative Perspectives (S. Taylor-Parker, R. Mitchell, & L. Miles, Eds.), Contemporary Psychology, 47, 39-42.

2001

Baker, L., Beran, M., & Taglialatela, J. (2001). MTS accuracy by Pan troglodytes as a function of surface color and form information. American Journal of Primatology, 54 (S1), 87.

Beran, M. J. (2001). Summation and numerousness judgments of sequentially presented sets of items by chimpanzees (Pan troglodytes). Journal of Comparative Psychology, 115, 181-191.

Beran, M. J. (2001). Do chimpanzees have expectations about reward presentation following correct performance on computerized cognitive testing? Psychological Record, 51, 173-183.

Beran, M. J., Pate, J. L., Washburn, D. A., & Rumbaugh, D. M. (2001). Sequential responding and planning in chimpanzees (Pan troglodytes) and rhesus macaques (Macaca mulatta). American Journal of Primatology, 54, 100. [Abstract].

Beran, M. J., & Rumbaugh, D. M. (2001). "Constructive" enumeration by chimpanzees (Pan troglodytes) on a computerized task. Animal Cognition, 4, 81-89.

Beran, M. J., & Rumbaugh, D. M. (2001). Comparative cognitive science and the Japanese influence in primatology. Book Review of Primate origins of human cognition and behavior by Tetsuro Matsuzawa. American Journal of Primatology, 55, 183-185.

Cantalupo, C., & Hopkins, W.D. (2001). Asymmetric Broca's area in great apes. Nature, 414, 505.

Gibson, K. R., Rumbaugh, D. M., & Beran, M. J. (2001). Bigger is better: Primate brain size in relationship to cognition. In D. Falk & K. R. Gibson (Eds.), Evolutionary anatomy of the primate cerebral cortex (pp. 79-97). Cambridge: Cambridge University Press.

Hodgson, J. A., Wichayanuparp, S., Recktenwald, M. R., Roy, R. R., McCall, G., Day, M. K., Washburn, D., Fanton, J. W., Kozlovskaya, I., & Edgerton, V. R. (2001). Circadian force and EMG activity in hindlimb muscles of rhesus monkeys. Journal of Neurophysiology, 86, 1430-1444.

Rumbaugh, D. M., Beran, M. J., & Elder, C. M. (2001) Infancy and the birth of competence: Bruner and comparative-developmental research. In D. Bakhurst & S. G. Shanker (Eds.), Jerome Bruner: Language, culture, self. (pp. 136-149). London: Sage.

Rumbaugh, D. M., Savage-Rumbaugh, E. S., & Beran, M. J. (2001). The grand apes. In B. B. Beck, T. S. Stoinski, M. Hutchins, T. L. Maple, A. Rowan, B. F. Stevens, & A. Arluke, (Eds.), Great apes & humans: The ethics of coexistence (pp. 245-260). Washington: Smithsonian Institution Press.

Washburn, D. A., & Putney, R. T. (2001). Attention and task difficulty: When is performance facilitated? Learning and Motivation, 32, 36-47.

2000

Beran, M. J. (2000). Two chimpanzees (Pan troglodytes) compare non-visible sums of candy pieces. American Journal of Primatology, 51 (S1), 43-44. [Abstract].

Beran, M. J., Pate, J. L., Richardson, W. K., & Rumbaugh, D. M. (2000). A chimpanzee's (Pan troglodytes) long-term retention of lexigrams. Animal Learning and Behavior, 28, 201-207.

Bisazza, A., Cantalupo, C., Capocchiano, M., & Vallortigara, G. (2000). Population lateralization and social behavior: a study with sixteen species of fish. Laterality, 5, 269-284.

Cantalupo, C., & Ward, J.P. (2000). Interaction between lateralized systems: exploring the complexity of laterality. Brain & Cognition, 43, 73-78.

Hodgson, J. A., Wichayanuparp, S., Recktenwald, M. r., Roy, R. R., McCall, G., Washburn, D. A., Fanton, J. W., Riazansky, S. N., Kozlovskaya, I. B., & Edgerton, V. R. (2000) Daily activation levels in rhesus lower limb muscles. Journal of Gravitational Physiology, 7(1) S-73.

Minahan, M. F., Beran, M. J., & Savage-Rumbaugh, E. S. (2000). Object permanence in bonobos (Pan paniscus) and chimpanzees (Pan troglodytes). American Journal of Primatology, 51 (S1), 75. [Abstract].

Menzel, C. R. & Beck, B. B. ( 2000). Homing and detour behavior in golden lion tamarin social groups. In S. Boinski & P. A. Garber (Eds.), On the move: How and why animals travel in groups. (pp. 299-326). Chicago: Chicago University Press.

Recktenwald, M. R., Hodgson, J. A., Roy, R. R., Riazansky, S. N., McCall, G., Kozlovskaya, I. B., Washburn, D. A., Fanton, J. W., & Edgerton, V. R. (2000). Quadrupedal locomotion in rhesus monkeys after 14 days of spaceflight. Journal of Gravitational Physiology, 7(1) S

Recktenwald, M. R., Hodgson, J. A., Roy, R. R., Riazansky, S, N., McCall, G., Kozlovskaya, I. B., Washburn, D. A., Fanton, J. W., & Edgerton, V. R. (2000). Effects of spaceflight on rhesus quadrupedal locomotion after return to 1G. Journal of Neurophysiology, 81, 2451-2463.

Rilling, J., Kilts, C., Williams, S., Beran, M., Giroux, M., Hoffman, J. M., Rapoport, S., Savage-Rumbaugh, E.S., & Rumbaugh, D.M. (2000). A comparative PET study of linguistic processing in humans and language-competent chimpanzees. American Journal of Physical Anthropology, 111 (S), 263. [Abstract].

Rumbaugh, D.M. (2000) The mentalities of gorillas and orangutans (book review). International Journal of Primatology, 21, 769-771.

Rumbaugh, D. M., Beran, M. J., & Hillix, W. A. (2000). Cause-effect reasoning in humans and animals. In C. Heyes & L. Huber (Eds.), The evolution of cognition. (pp. 221-238). Cambridge, MA.: MIT Press.

Washburn, D. A., Rumbaugh, D. M., Richardson, W. K., Gulledge, J. P., Shlyk, G. G., & Vasilieva, O. N. (2000). PTS performance by flight- and control-group macaques. Journal of Gravitational Physiology, 7, S89-S94.

1999

Beran, M. J., Gibson, K. R. , & Rumbaugh, D. M. (1999). Predicting hominid intelligence from brain size. In M. Corbalis & E. G. Lea (Eds.), The descent of mind: Psychological perspectives on hominid evolution. (pp. 88-97). New York: Oxford University Press.

Beran, M. J., Savage-Rumbaugh, E. S., Pate, J. L., & Rumbaugh, D. M. (1999). Delay of gratification in chimpanzees (Pan troglodytes). Developmental Psychobiology, 34, 119-127.

Gulledge, J. P., Washburn, D. A., & Rumbaugh, D. M. (1999). Judgments of numeric symbols and quantities by macaques. Abstracts of the Psychonomic Society, 4, 49.

Johnson-Pynn, J., Fragaszy, D. M., Hirsh, E. M., & Brakke, K. E., & Greenfield, P. M. (1999). Strategies used to combine seriated cups by chimpanzees (Pan troglodytes), bonobos (Pan paniscus), and capuchins (Cebus apella). Journal of Comparative Psychology, 113, 137-148.

King, J. E., Rumbaugh, D. M., & Savage-Rumbaugh, E. S. (1999). Perception of personality traits and semantic learning in evolving hominids. In M. Corbalis & E. G. Lea (Eds.), The descent of mind: Psychological perspectives on hominid evolution. (pp. 98-115). New York: Oxford University Press.

Menzel, C. R. (1999). Unprompted recall and reporting of hidden objects by a chimpanzee (Pan troglodytes) after extended delays. Journal of Comparative Psychology, 113, 426-434.

Menzel, C. R., Savage-Rumbaugh, S. E. & Menzel, E. W. Jr. (1999). Organization of movement by rhesus monkeys, apes and humans in computer presented maze tasks. American Journal of Primatology, 49, 80. [Abstract].

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