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Author |
Reichmuth Kastak, C.; Schusterman, R.J. |
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Title |
Long-term memory for concepts in a California sea lion ( Zalophus californianus) |
Type |
Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
4 |
Pages |
225-232 |
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Keywords |
Animals; Concept Formation; Female; Memory/*physiology; Mental Processes; Sea Lions/physiology/*psychology; Time Factors |
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Abstract |
An adult California sea lion ( Zalophus californianus) with extensive experience in performing discrimination learning tasks was tested to evaluate her long-term memory for two previously learned concepts. An associative concept, that of equivalence classification, was retested after a retention interval of approximately 1 year. The sea lion had originally shown emergent equivalence classification with nonsimilarity-based classes of stimuli in a simple discrimination repeated-reversal procedure as well as in a matching-to-sample procedure. The 1-year memory test revealed no decrement in classification performance in either procedure. A relational concept, that of generalized identity matching, was retested after approximately 10 years. The sea lion had originally received trial-and-error exemplar training with identity matching-to-sample problems prior to transferring the concept to novel stimulus configurations. In the 10-year memory test, the sea lion immediately and reliably applied the previously established identity concept to familiar and novel sets of matching problems. These are the first reports of long-term conceptual memory in a nonprimate species. The experimental findings are consistent with a variety of observations of sea lions in natural settings, which indicate that natal sites, feeding areas, and individuals may be remembered over long periods of time. |
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Long Marine Laboratory, University of California at Santa Cruz, 100 Shaffer Road, Santa Cruz, CA 95060, USA. coll@cats.ucsc.edu |
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1435-9448 |
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PMID:12461600 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2590 |
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Author |
Treichler, F.R.; Van Tilburg, D. |
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Title |
Premise-pair training for valid tests of serial list organization in macaques |
Type |
Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
2 |
Pages |
97-105 |
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Keywords |
Animals; *Discrimination Learning; Female; Macaca/*psychology; *Memory |
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Abstract |
This study evaluated the role of several different training procedures on (1) efficiency of acquisition and (2) organizational characteristics of memory for lists that could be serially ordered. Five macaque monkeys were trained via two-choice object discriminations in a formboard apparatus on several five-item-series tasks that provided different levels of intrasession conditionality. Although ease of acquisition differed for subsets of the constituent pairs, concurrent inclusion of the four premise pairs that defined a list required equivalent amounts of training on every task. All training procedures yielded similar retention-test performances and showed common organizational properties (on both error and latency measures) consistent with the view that lists were retained as internally represented ordered series. Test outcomes emphasized the need for integrated exposition of all concurrent conditional relationships to allow appropriate tests of serial organization. However, if given such training, the monkeys revealed integrated serial memory even though they had never seen many of the possible novel combinations of list items. In overview, their performances offered further definition of the procedures required for valid assessment of inferential properties in comparative cognition. |
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Department of Psychology, Kent State University, Kent, OH 44242-0001, USA. rtreichl@kent.edu |
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1435-9448 |
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PMID:12150042 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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2602 |
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Schwartz, B.L.; Colon, M.R.; Sanchez, I.C.; Rodriguez, I.A.; Evans, S. |
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Title |
Single-trial learning of “what” and “who” information in a gorilla (Gorilla gorilla gorilla): implications for episodic memory |
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Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
2 |
Pages |
85-90 |
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Keywords |
Animals; Cognition; Gorilla gorilla/*psychology; *Learning; Male; *Memory; Perception; Reinforcement Schedule |
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Abstract |
Single-trial learning and long-term memory of “what” and “who” information were examined in an adult gorilla (Gorilla gorilla gorilla). We presented the gorilla with a to-be-remembered food item at the time of study. In Experiment 1, following a retention interval of either approximately 7 min or 24 h, the gorilla responded with one of five cards, each corresponding to a particular food. The gorilla was accurate on 70% of the short retention-interval trials and on 82% of the long retention-interval trials. In Experiment 2, the food stimulus was provided by one of two experimenters, each of whom was represented by a card. The gorilla identified the food (55% of the time) and the experimenter (82% of the time) on the short retention-interval trials. On the long retention-interval trials, the gorilla was accurate for the food (73%) and for the person (87%). The results are interpreted in light of theories of episodic memory. |
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Department of Psychology, Florida International University, University Park, Miami, FL 33199, USA. schwartb@fiu.edu |
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1435-9448 |
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PMID:12150040 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2604 |
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Author |
Burke, D.; Cieplucha, C.; Cass, J.; Russell, F.; Fry, G. |
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Title |
Win-shift and win-stay learning in the short-beaked echidna (Tachyglossus aculeatus) |
Type |
Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
2 |
Pages |
79-84 |
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Keywords |
Animals; Echidna/*psychology; Ecology; Female; *Learning; *Memory; *Predatory Behavior; Reinforcement (Psychology) |
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Abstract |
Numerous previous investigators have explained species differences in spatial memory performance in terms of differences in foraging ecology. In three experiments we attempted to extend these findings by examining the extent to which the spatial memory performance of echidnas (or “spiny anteaters”) can be understood in terms of the spatio-temporal distribution of their prey (ants and termites). This is a species and a foraging situation that have not been examined in this way before. Echidnas were better able to learn to avoid a previously rewarding location (to “win-shift”) than to learn to return to a previously rewarding location (to “win-stay”), at short retention intervals, but were unable to learn either of these strategies at retention intervals of 90 min. The short retention interval results support the ecological hypothesis, but the long retention interval results do not. |
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Department of Psychology, University of Wollongong, Wollongong, NSW 2522, Australia. darren_burke@uow.edu.au |
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1435-9448 |
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Notes |
PMID:12150039 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2605 |
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Author |
Péron, F.; Ward, R.; Burman, O. |
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Title |
Horses (Equus caballus) discriminate body odour cues from conspecifics |
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Journal Article |
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Year |
2013 |
Publication |
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Abbreviated Journal |
Animal Cognition |
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Pages |
1-5 |
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Keywords |
Body odour; Discrimination; Equus caballus; Habituation; Social memory |
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Abstract |
Knowledge about social recognition and memory in animals can help us to determine appropriate management and husbandry techniques. In this study, we used a habituation–discrimination procedure to investigate the ability of horses (Equus caballus) to distinguish between the body odour samples of unfamiliar conspecifics. To pick up body odour, we rubbed material on the coat of horses and presented these unknown body odours to 16 different conspecifics of the same sex and similar age. The test consisted of two successive two-min presentations of a sample from one individual (e.g. individual ‘A’) and a simultaneous presentation of samples from individual ‘A’ and a novel individual (e.g. individual ‘B’) during a final third presentation. The results showed that horses, regardless of sex, decreased the time they spent investigating conspecific body odour across the initial two presentations—demonstrating habituation. In the final presentation, the results demonstrated successful discrimination of the previously experienced odour because horses investigated the novel olfactory sample (‘B’) significantly more than the pre-exposed sample (‘A’). Taken together, these findings suggest, for the first time, that horses are able to discriminate two stimuli derived from body odours of unfamiliar conspecifics over short period of time. |
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Springer Berlin Heidelberg |
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1435-9448 |
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Call Number |
Equine Behaviour @ team @ |
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5742 |
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Author |
Hanggi, E.B.; Ingersoll, J.F. |
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Title |
Long-term memory for categories and concepts in horses (Equus caballus) |
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Journal Article |
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Year |
2009 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
13 |
Issue |
3 |
Pages |
451-462 |
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Keywords |
Horse – Long-term memory – Concept – Categorization – Discrimination – LCD display – Equine |
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Abstract |
Three horses (Equus caballus) with a history of performing cognitive tasks including discrimination learning, categorization, and concept use were tested to evaluate their long-term memory (LTM) in three experiments. In addition, use of LCD multi-displays for stimulus presentation was incorporated into cognition testing protocol for the first time with horses. Experiment 1 tested LTM for discrimination learning that originally occurred 6 years earlier. Five sets of stimuli were used and the two horses tested showed no decrement in performance on four of the sets; however, both horses did score below chance on one set. Experiment 2 examined long-term categorization recall 10 years after horses had demonstrated the ability to make stimulus selections based on shared characteristics within a given category. The horse tested for LTM after the decade-long interval immediately and consistently applied the previously learned categorization rule to not only familiar but also novel sets of stimuli. Experiment 3 tested another horse for LTM for a relative size concept. This horse had originally demonstrated concept rule use in order to select stimuli based on their relative size to one another. More than 7 years later and without further training, this horse reliably applied the previously established size concept to both familiar and novel sets of stimuli. These findings are the first reports of long-term categorical and conceptual memory in horses and are consistent with observations of domestic and wild horses, which indicate that behavioral and ecological events may be remembered for long periods of time. These studies also demonstrate the adaptive nature of horses with regard to their ability to generalize over several different testing conditions. |
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Equine Research Foundation, P.O. Box 1900, Aptos, CA, 95001, USA, EquiResF@aol.com |
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1435-9456 |
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Notes |
PMID:19148689 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4760 |
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Permanent link to this record |
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Author |
Shettleworth, S.J. |
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Title |
Animal behaviour: planning for breakfast |
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Journal Article |
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Year |
2007 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
445 |
Issue |
7130 |
Pages |
825-826 |
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Keywords |
Animals; Feeding Behavior/*physiology; *Food; Haplorhini/physiology; Memory/physiology; Songbirds/*physiology; Thinking/*physiology |
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1476-4687 |
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PMID:17314961 |
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refbase @ user @ |
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356 |
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Author |
Dreier, S.; van Zweden, J.S.; D'Ettorre, P. |
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Title |
Long-term memory of individual identity in ant queens |
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Journal Article |
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Year |
2007 |
Publication |
Biology Letters |
Abbreviated Journal |
Biol Lett |
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Volume |
3 |
Issue |
5 |
Pages |
459-462 |
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Keywords |
Aggression; Animals; Ants/*physiology; Conditioning, Operant; Evolution; Female; *Memory; *Recognition (Psychology); Social Dominance |
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Abstract |
Remembering individual identities is part of our own everyday social life. Surprisingly, this ability has recently been shown in two social insects. While paper wasps recognize each other individually through their facial markings, the ant, Pachycondyla villosa, uses chemical cues. In both species, individual recognition is adaptive since it facilitates the maintenance of stable dominance hierarchies among individuals, and thus reduces the cost of conflict within these small societies. Here, we investigated individual recognition in Pachycondyla ants by quantifying the level of aggression between pairs of familiar or unfamiliar queens over time. We show that unrelated founding queens of P. villosa and Pachycondyla inversa store information on the individual identity of other queens and can retrieve it from memory after 24h of separation. Thus, we have documented for the first time that long-term memory of individual identity is present and functional in ants. This novel finding represents an advance in our understanding of the mechanism determining the evolution of cooperation among unrelated individuals. |
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Institute of Biology, Department of Population Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark. sdreier@bi.ku.dk |
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1744-9561 |
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PMID:17594958 |
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Equine Behaviour @ team @ |
Serial |
4649 |
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