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Author |
Lonon, A.M.; Zentall, T.R. |
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Title  |
Transfer of value from S+ to S- in simultaneous discriminations in humans |
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Journal Article |
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Year |
1999 |
Publication |
The American journal of psychology |
Abbreviated Journal |
Am J Psychol |
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Volume |
112 |
Issue |
1 |
Pages |
21-39 |
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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) |
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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. |
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University of Kentucky, USA |
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0002-9556 |
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PMID:10696277 |
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refbase @ user @ |
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249 |
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König von Borstel, U.; Pasing, S.; Gauly, M. |
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Title |
Towards a more objective assessment of equine personality using behavioural and physiological observations from performance test training |
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Journal Article |
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Year |
2011 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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Volume |
135 |
Issue |
4 |
Pages |
277-285 |
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Horse; Personality; Behaviour; Heart rate variability; Riding; Performance test |
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Current definitions of horse personality traits are rather vague, lacking clear, universally accepted guidelines for evaluation in performance tests. Therefore, the aim of the present study was to screen behavioural and physiological measurements taken during riding for potential links with scores the same horses received in the official stallion performance test for rideability and personality traits. Behaviour, heart rate (HR) and HR variability from thirty-six stallions participating in a performance test were recorded repeatedly during their performance test training. Using the coefficient of determination, regression analysis revealed that about 1/3 of variation (ranging between r = 0.26 (“constitution” (i.e. fitness, health)) and r = 0.46 (rideability)) in the personality trait scores could be explained by selecting the three most influential behaviour patterns per trait. These behaviour patterns included stumbling (with all traits except character), head-tossing (temperament, rideability), tail-swishing (willingness to work), involuntary change in gait (character) and the rider's use of her/his hands (constitution, rideability), voice (temperament) or whip (constitution). Subsequent mixed model analysis revealed a significant (P < 0.05) influence of the behaviour pattern “horse-induced change in gait” on character (-0.98 ± 0.31 scores per additional occurrence of change in gaits), of head-tossing (-0.25 ± 0.08 scores) and rider's use of voice (-0.51 ± 0.25; P = 0.0594) on temperament, and of stumbling on each of the following: willingness to work (-2.5 ± 1.2), constitution (-2.5 ± 1.2 scores; P = 0.0516) and rideability scores (-3.3 ± 1.4). In addition, constitution scores tended (P = 0.0889) to increase with higher low frequency/high frequency heart rate variation ratios (LF/HF), indicating a shift towards sympathetic dominance and thus a higher stress load in horses with higher scores for constitution. Rideability scores from the training phase were also significantly influenced by head-tossing (-0.5 ± 0.1), and in addition rideability scores from the final test were influenced by the training rider, ranging between average estimated rideability scores of 6.8 ± 0.4 for one training rider and 8.36 ± 0.3 scores for another training rider. Horses ridden with their nose-line predominantly behind the vertical received higher scores for rideability (8.3 ± 0.3) than horses ridden with their nose-line at the vertical (7.7 ± 0.2). These findings indicate that either judges perceive horses to have a better rideability when they readily offer a more extreme poll flexion, or that riders make use of horses’ better rideability by imposing a more extreme poll flexion. Several of the above described associations, but also of the non-existing links (e.g. no association between shying or heart rate and temperament) between behaviour patterns and scores for personality traits are rather surprising, warranting further investigation regarding the underlying causes of these relationships. Some of these behaviour patterns should be considered when redesigning the current guidelines for evaluation of personality traits during breeding horse performance tests, ultimately leading to improved genetic selection for equine personality traits. However, ethical implication of defining aversive behaviour such as head-tossing as an indicator of, for example, poor temperament, should not be neglected when devising new guidelines: such aversive behaviour may in fact be an indication of inadequate training techniques rather than poor horse personality. |
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0168-1591 |
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Equine Behaviour @ team @ |
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5489 |
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Author |
Sterling, E.J.; Povinelli, D.J. |
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Title |
Tool use, aye-ayes, and sensorimotor intelligence |
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Journal Article |
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Year |
1999 |
Publication |
Folia Primatologica; International Journal of Primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
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70 |
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1 |
Pages |
8-16 |
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Animals; *Behavior, Animal; Feeding Behavior; Female; *Intelligence; Male; Problem Solving; *Psychomotor Performance; Strepsirhini/*physiology/psychology |
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Humans, chimpanzees, capuchins and aye-ayes all display an unusually high degree of encephalization and diverse omnivorous extractive foraging. It has been suggested that the high degree of encephalization in aye-ayes may be the result of their diverse, omnivorous extractive foraging behaviors. In combination with certain forms of tool use, omnivorous extractive foraging has been hypothesized to be linked to higher levels of sensorimotor intelligence (stages 5 or 6). Although free-ranging aye-ayes have not been observed to use tools directly in the context of their extractive foraging activities, they have recently been reported to use lianas as tools in a manner that independently suggests that they may possess stage 5 or 6 sensorimotor intelligence. Although other primate species which display diverse, omnivorous extractive foraging have been tested for sensorimotor intelligence, aye-ayes have not. We report a test of captive aye-ayes' comprehension of tool use in a situation designed to simulate natural conditions. The results support the view that aye-ayes do not achieve stage 6 comprehension of tool use, but rather may use trial-and-error learning to develop tool-use behaviors. Other theories for aye-aye encephalization are considered. |
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Deutsches Primatenzentrum, Gottingen, Germany |
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0015-5713 |
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PMID:10050062 |
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Equine Behaviour @ team @ |
Serial |
4178 |
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Visser, E.K.; Van Reenen, C.G.; Engel, B.; Schilder, M.B.H.; Barneveld, A.; Blokhuis, H.J. |
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Title |
The association between performance in show-jumping and personality traits earlier in life |
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Journal Article |
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Year |
2003 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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Volume |
82 |
Issue |
4 |
Pages |
279-295 |
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Keywords |
Personality; Performance; Horses; Prediction; Individual differences; Behavioural tests |
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For a horse to succeed in a show-jumping career, the individual has to possess both excellent physical abilities as well as a suitable personality to perform under challenging conditions. Forty-one Dutch Warmblood horses were used to develop personality tests and correlations between test variables and early training performances in jumping were studied. In behavioural tests, during the first 2 years of the horses' lives, personality aspects like emotionality, reactivity to human and learning abilities were quantified. At the age of 3, horses were broken and received early training in show-jumping. The inter-relationship between several performance variables measured during this early training phase were studied using principal component analysis (PCA). Variables measured in the different personality tests (novel-object test, handling test, avoidance-learning test and a reward-learning test) showed no correlations, suggesting that these tests all triggered different aspects of a horse's personality. This study indicates that it is possible to predict a substantial part of the show-jumping performance of an individual horse later in life by personality traits earlier in life. |
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refbase @ user @ |
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326 |
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Stoet, G.; Snyder, L.H. |
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Title |
Task preparation in macaque monkeys ( Macaca mulatta) |
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Journal Article |
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2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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6 |
Issue |
2 |
Pages |
121-130 |
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Animals; *Cognition; Conditioning, Classical; Macaca mulatta/*psychology; Male; Reaction Time; Task Performance and Analysis; Visual Perception |
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We investigated whether macaque monkeys possess the ability to prepare abstract tasks in advance. We trained two monkeys to use different stimulus-response (S-R) mappings. On each trial, monkeys were first informed with a visual cue which of two S-R mapping to use. Following a delay, a visual target was presented to which they would respond with a left or right button-press. We manipulated delay time between cue and target and found that performance was faster and more accurate with longer delays, suggesting that monkeys used the delay time to prepare each task in advance. |
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Department of Anatomy and Neurobiology, Washington University School of Medicine, 660 S Euclid Ave., Box 8108, St. Louis, MO 63110, USA. stoet@pcg.wustl.edu |
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1435-9448 |
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PMID:12721788 |
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Equine Behaviour @ team @ |
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2572 |
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Author |
Huizinga, H.A.; Korver, S.; van der Meij, G.J.W. |
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Stationary performance testing of stallions from the Dutch Warmblood riding horse population. 2. Estimated heritabilities of and correlations between successive judgements of performance traits |
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Journal Article |
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1991 |
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Livestock Production Science |
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27 |
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2-3 |
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245-254 |
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dressage; genetic parameters; horse; jumping; performance; stallion |
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The length of test period of stationary performance testing (SPT) of stallions of the Dutch Warmblood riding horse population is evaluated. Heritability of successive judgements of traits and the phenotypic and genetic relations between successive judgements are estimated. Data from 1983-1988 are used, covering scores from 206 mostly 3-year-old stallions. Ten subjectively scored traits are considered: walk, trot, canter, riding ability, jumping ability, free jumping, cross country, character, stable behaviour, training report. Traits are successively scored at about 25, 50, 80 and 100 days in SPT. Missing scores are predicted on basis of the available scores using multiple partial regression coefficients. Validity of this method is checked in an independent data set for walk, trot and canter. The correlations between predicted and realized scores average 0.74, 0.77 and 0.79 when first, first and second, and first, second and third judgements are available, respectively. Variance and covariance components are estimated by restricted maximum likelihood (REML) procedures. Data from SPT are analysed using an animal model. Estimates of heritability are high and constant for gaits during the successive judgements. Except for stable behaviour estimates of heritability, the traits decrease slightly during the successive judgements. Estimates of the phenotypic and genetic correlations between successive judgements are high. It is concluded that length of SPT can be shortened and selection during SPT can be intensified. |
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refbase @ user @ |
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3963 |
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Huizinga, H.A.; van der Werf, J.H.J.; Korver, S.; van der Meij, G.J.W. |
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Stationary performance testing of stallions from the Dutch Warmblood riding horse population. 1. Estimated genetic parameters of scored traits and the genetic relation with dressage and jumping competition from offspring of breeding stallions |
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Journal Article |
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Year |
1991 |
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Livestock Production Science |
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27 |
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2-3 |
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231-244 |
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dressage; genetic parameters; horse; jumping; performance; stallion |
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The stationary performance testing (SPT) of stallions as breeding candidates in the Dutch Warmblood riding horse population is evaluated. Genetic and phenotypic parameters of traits scored during SPT and the genetic correlation of these traits with performances in dressage and jumping competition from offspring of breeding stallions are estimated. Data from 1978-1988 are used, covering scores from 337 3-year-old stallions. Eight subjectively scored traits are considered. These traits are: walk; trot; canter; riding ability; show jumping; free jumping; cross country; character. SPT lasts for a period of 100 days. Data from SPT are analysed using an animal model. The relations between SPT of stallions and performances in jumping and dressage competition are analysed with an animal model for SPT data and a sire model for competition data. Variance and covariance components are estimated by restricted maximum likelihood (REML) procedures. Estimates of heritability are high (0.64) for gaits and riding ability, intermediate (0.41) for cross country and medium-high (0.31) for jumping. Estimated genetic correlation between show jumping scored during SPT and jumping in competition from offspring of breeding stallions is 0.84; for dressage this relation is 0.83. Some possible bias due to selection and the subjectivity of scoring is discussed. It is indicated that selection on SPT of stallions before entering breeding service is an effective tool to breed for ability of performance in competition. |
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refbase @ user @ |
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3962 |
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Gomez, J.-C. |
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Species comparative studies and cognitive development |
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2005 |
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Trends in Cognitive Sciences |
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Trends. Cognit. Sci. |
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9 |
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3 |
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118-125 |
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Animals; Attention/physiology; Brain/*growth & development; Child, Preschool; Cognition/*physiology; Concept Formation/physiology; Dogs; Evolution; Fixation, Ocular; Gorilla gorilla; Humans; Infant; Learning/*physiology; Macaca mulatta; Mental Recall/physiology; Personal Construct Theory; Psychomotor Performance/physiology; Species Specificity |
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The comparative study of infant development and animal cognition brings to cognitive science the promise of insights into the nature and origins of cognitive skills. In this article, I review a recent wave of comparative studies conducted with similar methodologies and similar theoretical frameworks on how two core components of human cognition--object permanence and gaze following--develop in different species. These comparative findings call for an integration of current competing accounts of developmental change. They further suggest that evolution has produced developmental devices capable at the same time of preserving core adaptive components, and opening themselves up to further adaptive change, not only in interaction with the external environment, but also in interaction with other co-developing cognitive systems. |
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Scottish Primate Research Group, School of Psychology, University of St Andrews, St Andrews, Fife KY15 9JU, UK |
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1364-6613 |
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PMID:15737820 |
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Equine Behaviour @ team @ |
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2851 |
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Stoinski, T.S.; Whiten, A. |
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Social learning by orangutans (Pongo abelii and Pongo pygmaeus) in a simulated food-processing task |
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2003 |
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Journal of comparative psychology (Washington, D.C. : 1983) |
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J Comp Psychol |
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117 |
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3 |
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272-282 |
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*Animal Communication; Animals; *Feeding Behavior; Female; *Imitative Behavior; Male; Pongo pygmaeus/*psychology; Problem Solving; Psychomotor Performance; Social Environment; Species Specificity; *Transfer (Psychology) |
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Increasing evidence for behavioral differences between populations of primates has created a resurgence of interest in examining mechanisms of information transfer between individuals. The authors examined the social transmission of information in 15 captive orangutans (Pongo abelii and Pongo pygmaeus) using a simulated food-processing task. Experimental subjects were shown 1 of 2 methods for removing a suite of defenses on an “artificial fruit.” Control subjects were given no prior exposure before interacting with the fruit. Observing a model provided a functional advantage in the task, as significantly more experimental than control subjects opened the fruit. Within the experimental groups, the authors found a trend toward differences in the actual behaviors used to remove 1 of the defenses. Results support observations from the wild implying horizontal transfer of information in orangutans and show that a number of social learning processes are likely to be involved in the transfer of knowledge in this species. |
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Department of Primate Research, Zoo Atlanta, Atlanta, GA 30315, USA. tstoinski@zooatlanta.org |
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0735-7036 |
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PMID:14498803 |
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refbase @ user @ |
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737 |
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Beran, M.J.; Pate, J.L.; Washburn, D.A.; Rumbaugh, D.M. |
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Sequential responding and planning in chimpanzees (Pan troglodytes) and rhesus macaques (Macaca mulatta) |
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2004 |
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Journal of Experimental Psychology. Animal Behavior Processes |
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J Exp Psychol Anim Behav Process |
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30 |
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3 |
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203-212 |
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Animals; *Cognition; Female; Goals; Learning; Macaca mulatta/*psychology; Male; *Mathematics; Pan troglodytes/*psychology; Task Performance and Analysis |
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Chimpanzees (Pan troglodytes) and rhesus macaques (Macaca mulatta) selected either Arabic numerals or colored squares on a computer monitor in a learned sequence. On shift trials, the locations of 2 stimuli were interchanged at some point. More errors were made when this interchange occurred for the next 2 stimuli to be selected than when the interchange was for stimuli later in the sequence. On mask trials, all remaining stimuli were occluded after the 1st selection. Performance exceeded chance levels for only 1 selection after these masks were applied. There was no difference in performance for either stimulus type (numerals or colors). The data indicated that the animals planned only the next selection during these computerized tasks as opposed to planning the entire response sequence. |
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Language Research Center, Georgia State University, Atlanta 30303, USA. mjberan@yahoo.com |
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0097-7403 |
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PMID:15279511 |
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Equine Behaviour @ team @ |
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2767 |
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