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	Author	Timney, B.; Keil, K.
	Title	Local and global stereopsis in the horse			Type	Journal Article
	Year	1999	Publication	Vision Research	Abbreviated Journal	Vision Res
	Volume	39	Issue	10	Pages	1861-1867
	Keywords	Animals; Depth Perception/physiology; Female; Horses/physiology; Pattern Recognition, Visual/physiology; Psychophysics; Sensory Thresholds/physiology; Vision, Binocular/physiology; Vision, Monocular/physiology
	Abstract	Although horses have laterally-placed eyes, there is substantial binocular overlap, allowing for the possibility that these animals have stereopsis. In the first experiment of the present study we measured local stereopsis by obtaining monocular and binocular depth thresholds for renal depth stimuli. On all measures, the horses' binocular performance was superior to their monocular. When depth thresholds were obtained, binocular thresholds were several times superior to those obtained monocularly, suggesting that the animals could use stereoscopic information when it was available. The binocular thresholds averaged about 15 min arc. In the second experiment we obtained evidence for the presence of global stereopsis by testing the animals' ability to discriminate between random-dot stereograms with and without consistent disparity information. When presented with such stimuli they showed a strong preference for the cyclopean equivalent of the positive stimulus with the real depth. These results provide the first behavioral demonstration of a full range of stereoscopic skills in a lateral-eyed mammal.
	Address	Department of Psychology, Faculty of Social Science, University of Western Ontario, London, Canada. timney@julian.uwo.ca
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0042-6989	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10343877			Approved	yes
	Call Number	Equine Behaviour @ team @			Serial	3580
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	Author	Hanggi, E.B.
	Title	*Categorization Learning in Horses (Equus caballus)*			Type	Journal Article
	Year	1999	Publication	Journal of Comparative Psychology	Abbreviated Journal	J. Comp. Psychol.
	Volume	113	Issue	3	Pages	243-252
	Keywords
	Abstract	Categorization learning was investigated in 2 horses (Equus caballus). Both horses learned to select a 2-dimensional black stimulus with an open center instead of a filled stimulus in a 2-choice discrimination task. After a criterion of 10 out of 10 correct responses in a random series for 2 consecutive sessions was reached, 15 additional pairs of open-center versus filled stimuli were tested. Each was run to criterion and then incorporated into sessions of randomly mixed problems. Both horses solved the 1st problem by simple pattern discrimination and showed evidence of categorical processing for subsequent problems. New pairs were learned with few or no errors, and correct responses on novel trials were significantly above chance. These results suggest that the horses were making their selections on the basis of shared characteristics with the training stimuli and were using categorization skills in problem solving.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number	Equine Behaviour @ team @			Serial	3678
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	Author	Ruggieri, V.
	Title	The running horse stops: the hypothetical role of the eyes in imagery of movement			Type	Journal Article
	Year	1999	Publication	Perceptual and motor skills	Abbreviated Journal	Percept Mot Skills
	Volume	89	Issue	3 Pt 2	Pages	1088-1092
	Keywords	Adult; Cerebral Cortex/physiology; Eye Movements/physiology; Female; Functional Laterality/physiology; Head/physiology; Humans; Imagination; Models, Neurological; Motion Perception; Movement/physiology; Ocular Physiology; *Optical Illusions; Posture/physiology
	Abstract	To examine the hypothetical role of the eyes in visual mental imagery of movement 72 undergraduate women students in psychology were asked to imagine a running horse and then to produce the same mental image without moving the eyes and the head. In 59% of the subjects interesting modifications of the imagined movement appeared: 37% observed an inhibition of the movement and 19% an evident slowing up of the moving figure. The interpretation of this result was made by hypothesizing that the eyes are concretely involved in visual imagery processes.
	Address	University of Rome La Sapienza
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0031-5125	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10710755			Approved	no
	Call Number	refbase @ user @			Serial	94
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	Author	de Waal, F.B.
	Title	The end of nature versus nurture			Type	Journal Article
	Year	1999	Publication	Scientific American	Abbreviated Journal	Sci Am
	Volume	281	Issue	6	Pages	94-99
	Keywords	Animals; Behavior; Behavior, Animal; Ecology; Environment; Ethology; Evolution; Female; *Genetics; Humans; Instinct; Learning; Male; Sex Characteristics; Twin Studies
	Abstract
	Address	Living Links Center, Yerkes Regional Primate Research Center, Atlanta, USA
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0036-8733	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10614071			Approved	no
	Call Number	refbase @ user @			Serial	192
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	Author	Lilienfeld, S.O.; Gershon, J.; Duke, M.; Marino, L.; de Waal, F.B.
	Title	A preliminary investigation of the construct of psychopathic personality (psychopathy) in chimpanzees (Pan troglodytes)			Type	Journal Article
	Year	1999	Publication	Journal of comparative psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	113	Issue	4	Pages	365-375
	Keywords	Age Factors; Analysis of Variance; Animals; Antisocial Personality Disorder/diagnosis/psychology; Ethology/methods; Female; Male; Observer Variation; Pan troglodytes/psychology; Psychiatric Status Rating Scales/standards; Reproducibility of Results; Sex Characteristics; *Social Behavior
	Abstract	Although the construct of psychopathy has received considerable attention in humans, its relevance to other animals is largely unknown. We developed a measure of psychopathy for use in chimpanzees (Pan troglodytes), the Chimpanzee Psychopathy Measure (CPM), and asked 6 raters to complete this index on 34 chimpanzees. The CPM (a) demonstrated satisfactory interrater reliability and internal consistency; (b) exhibited marginally significant sex differences (males > females); (c) correlated positively with measures of extraversion, agreeableness, and observational ratings of agonism, sexual activity, daring behaviors, teasing, silent bluff displays, and temper tantrums, and negatively with observational ratings of generosity; and (d) demonstrated incremental validity above and beyond a measure of dominance. Although further validation of the CPM is needed, these findings suggest that the psychopathy construct may be relevant to chimpanzees.
	Address	Department of Psychology, Emory University, Atlanta, Georgia 30322, USA. scott@ss.emory.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10608560			Approved	no
	Call Number	refbase @ user @			Serial	193
Permanent link to this record



	Author	Call, J.; Aureli,F.; de Waal, F.B. M.
	Title	Reconciliation patterns among stumptailed macaques: a multivariate approach			Type	Journal Article
	Year	1999	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	58	Issue	1	Pages	165-172
	Keywords
	Abstract	This study focused on two aspects of the dynamics of reconciliation in stumptailed macaques, Macaca arctoides. First, we investigated the combined effects of multiple variables (i.e. sex, age, rank, conflict intensity, outcome, or number of participants, interopponent distance, kinship and friendship) on the occurrence of reconciliation. Second, we investigated whether opponents used different behaviour patterns in their postconflict reunions depending on the characteristics of their conflicts or their relationship with their opponents. We studied a multimale, multifemale group of 38 stumptailed macaques housed in a large outdoor compound. Three types of data were collected: (1) instantaneous scan sampling of contact sitting to infer 'friendship'; (2) ad libitum data on bared-teeth and teeth-chattering displays to infer dominance rank; (3) 10-min focal observations during postconflict (PC) and matched control (MC) periods in which we recorded interopponent distance at the beginning of the observation and all aggressive and affiliative behaviours between former opponents. Our study confirmed the high conciliatory tendency of stumptailed macaques previously reported for other groups. A stepwise logistic regression revealed that initial interopponent distance in PC, friendship and kinship were the only factors that independently contributed to explain the occurrence of reconciliation. Two main clusters of postconflict behavioural patterns emerged: allogrooming+contact sitting and sociosexual behaviours (e.g. hold-bottom). It is hypothesized that postconflict allogrooming and contact sitting may be used for the maintenance of valuable relationships, whereas sociosexual behaviours may be used more indiscriminately by any pair of opponents as a buffering mechanism to prevent immediate recurrence of aggression. Copyright 1999 The Association for the Study of Animal Behaviour.
	Address	School of Biological Sciences, University of Liverpool
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0003-3472	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10413553			Approved	no
	Call Number	refbase @ user @			Serial	194
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	Author	Parr, L.A.; de Waal, F.B.
	Title	Visual kin recognition in chimpanzees			Type
	Year	1999	Publication	Nature	Abbreviated Journal	Nature
	Volume	399	Issue	6737	Pages	647-648
	Keywords	Animals; Behavior, Animal; Face; Female; Male; Pan troglodytes/physiology
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0028-0836	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10385114			Approved	no
	Call Number	refbase @ user @			Serial	195
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	Author	de Waal, F.B.
	Title	Cultural primatology comes of age			Type	Journal Article
	Year	1999	Publication	Nature	Abbreviated Journal	Nature
	Volume	399	Issue	6737	Pages	635-636
	Keywords	Animals; Behavior, Animal; Culture; Humans; Pan troglodytes/*physiology
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0028-0836	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10385107			Approved	no
	Call Number	refbase @ user @			Serial	196
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	Author	Aureli, F.; Preston, S.D.; de Waal, F.B.
	Title	Heart rate responses to social interactions in free-moving rhesus macaques (Macaca mulatta): a pilot study			Type	Journal Article
	Year	1999	Publication	Journal of comparative psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	113	Issue	1	Pages	59-65
	Keywords	Animals; Behavior, Animal/physiology; Female; Grooming/physiology; Heart Rate/physiology; Macaca mulatta/physiology; Male; Movement/physiology; Pilot Projects; Social Behavior
	Abstract	Heart rate telemetry was explored as a means to access animal emotion during social interactions under naturalistic conditions. Heart rates of 2 middle-ranking adult females living in a large group of rhesus macaques (Macaca mulatta) were recorded along with their behavior. Heart rate changes during 2 types of interactions were investigated, while controlling for the effects of posture and activity. The risk of aggression associated with the approach of a dominant individual was expected to provoke anxiety in the approachee. This prediction was supported by the heart rate increase after such an approach. No increase was found when the approacher was a kin or a subordinate individual. The tension-reduction function of allogrooming was also supported. Heart rate decelerated faster during the receipt of grooming than in matched control periods.
	Address	Yerkes Regional Primate Research Center, Emory University, Atlanta, Georgia 30322, USA. aureli@rmy.emory.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10098269			Approved	no
	Call Number	refbase @ user @			Serial	197
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	Author	Lonon, A.M.; Zentall, T.R.
	Title	Transfer of value from S+ to S- in simultaneous discriminations in humans			Type	Journal Article
	Year	1999	Publication	The American journal of psychology	Abbreviated Journal	Am J Psychol
	Volume	112	Issue	1	Pages	21-39
	Keywords	Adolescent; Adult; Animals; Color Perception; Columbidae; Conditioning, Classical; Discrimination Learning; Female; Humans; Male; Middle Aged; Motivation; Orientation; Pattern Recognition, Visual; Psychomotor Performance; Reaction Time; *Transfer (Psychology)
	Abstract	When animals learn a simultaneous discrimination, some of the value of the positive stimulus (S+) appears to transfer to the negative stimulus (S-). The present experiments demonstrate that such value transfer can also be found in humans. In Experiment 1 humans were trained on 2 simple simultaneous discriminations, the first between a highly positive stimulus, A (1,000 points); and a negative stimulus, B (0 points); and the second between a less positive stimulus, C (100 points); and a negative stimulus, D (0 points). On test trials, most participants preferred B over D. In Experiments 2 and 3 the value of the 2 original discriminations was equated in training (A[100]B[0] and C[100]D[0]). In Experiment 2 the values of the positive stimuli were then altered (A[1,000]C[0]); again, most participants preferred B over D. In Experiment 3, however, when the values of B and D were altered (B[1,000]D[0]), participants were indifferent to A and C. Thus, the mechanism that underlies value transfer in humans appears to be related to Pavlovian second-order conditioning. Similar mechanisms may be involved in assimilation processes in social contexts.
	Address	University of Kentucky, USA
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0002-9556	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10696277			Approved	no
	Call Number	refbase @ user @			Serial	249
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