Gerken, Martina

[["dc.bibliographiccitation.firstpage","1233"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Animal Cognition"],["dc.bibliographiccitation.lastpage","1243"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Gabor, Vivian"],["dc.contributor.author","Gerken, Martina"],["dc.date.accessioned","2018-11-07T09:33:13Z"],["dc.date.available","2018-11-07T09:33:13Z"],["dc.date.issued","2014"],["dc.description.abstract","Numerical competence is one of the aspects of animal cognition with a long history of research interest, but few results are available for the horse. In the present study, we investigated the ability of three Shetland ponies to discriminate between different quantities of geometric symbols presented on a computer screen in a matching-to-sample arrangement. In Experiment 1, the ponies had to relate two similar quantities to another, paired in contrasts (1 vs. 2, 3 vs. 4 and 4 vs. 5) of the same stimulus (dot). Specific pairs of quantities (all differing by one) of up to five different geometrical symbols were displayed in Experiment 2. In each session, both quantities (more and less) were used as sample in such a way that each of the two quantities presented in one test served as positive and as negative stimulus, respectively. The three Shetland ponies were able to discriminate between the given quantities of dots by showing more than 80 % correct responses in two consecutive sessions. Only one of the ponies distinguished different shapes of geometric symbols at a level of 4 versus 5 items. The results show that all ponies were capable of visual quantity discrimination in the present matching-to-sample design, but task solving seemed more difficult when quantities were composed of heterogeneous stimuli. The present results confirm our hypothesis that the ponies based their decision on the matching concept of sameness and were not biased by a spontaneous preference for higher quantities."],["dc.identifier.doi","10.1007/s10071-014-0753-0"],["dc.identifier.isi","000343884800001"],["dc.identifier.pmid","24831887"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31918"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Heidelberg"],["dc.relation.issn","1435-9456"],["dc.relation.issn","1435-9448"],["dc.title","Shetland ponies (Equus caballus) show quantity discrimination in a matching-to-sample design"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","119"],["dc.bibliographiccitation.issue","3-4"],["dc.bibliographiccitation.journal","Applied Animal Behaviour Science"],["dc.bibliographiccitation.lastpage","124"],["dc.bibliographiccitation.volume","126"],["dc.contributor.author","Gabor, Vivian"],["dc.contributor.author","Gerken, Martina"],["dc.date.accessioned","2018-11-07T08:39:27Z"],["dc.date.available","2018-11-07T08:39:27Z"],["dc.date.issued","2010"],["dc.description.abstract","Research into higher cognitive abilities of the horse may be limited by developing the adequate experimental design In this study four pony mares between 8 and 19 years old were included. Three of them reached the criterion to be tested in a new design of matching to sample using a black circle and a cross as visual cues attached to an apparatus The attention was directed to the question of whether the animals are able to concept formation in a given time period or if their decisions depend on other cues or strategies. After familiarization to the testing area and the test procedure, the animals were given 27 sessions of 20 trials each during 14 weeks. While there was no preference for one of the stimuli used, horses showed a significant left sidedness None of the mares reached the learning criterion of 80% correct answers in one session However, the ponies showed procedural learning based on correction runs that were given between incorrect decisions, by then selecting the correct stimulus on the other side of the apparatus This learning type arose in three individuals in session four, six and eleven, respectively. It is concluded that discrimination tasks may be biased by the involvement of unexpected learning strategies, which complicates the interpretation of such tests and may even mask possible conceptualization capabilities. (C) 2010 Elsevier B V All rights reserved."],["dc.identifier.doi","10.1016/j.applanim.2010.06.006"],["dc.identifier.isi","000281626600004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19000"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0168-1591"],["dc.title","Horses use procedural learning rather than conceptual learning to solve matching to sample"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","60"],["dc.bibliographiccitation.journal","Applied Animal Behaviour Science"],["dc.bibliographiccitation.lastpage","66"],["dc.bibliographiccitation.volume","198"],["dc.contributor.author","Gabor, Vivian"],["dc.contributor.author","Gerken, Martina"],["dc.date.accessioned","2020-12-10T14:22:26Z"],["dc.date.available","2020-12-10T14:22:26Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1016/j.applanim.2017.09.010"],["dc.identifier.issn","0168-1591"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/71612"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Study into long-term memory of a complex learning task in Shetland ponies ( Equus caballus )"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","45"],["dc.bibliographiccitation.journal","Applied Animal Behaviour Science"],["dc.bibliographiccitation.lastpage","51"],["dc.bibliographiccitation.volume","215"],["dc.contributor.author","Gabor, Vivian"],["dc.contributor.author","Wall, Sophie"],["dc.contributor.author","Gerken, Martina"],["dc.contributor.author","Brinkmann, Lea"],["dc.date.accessioned","2020-12-10T14:22:27Z"],["dc.date.available","2020-12-10T14:22:27Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1016/j.applanim.2019.04.002"],["dc.identifier.issn","0168-1591"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/71615"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Does inattentional blindness exist in horses (Equus caballus)?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","242"],["dc.bibliographiccitation.issue","3-4"],["dc.bibliographiccitation.journal","Applied Animal Behaviour Science"],["dc.bibliographiccitation.lastpage","250"],["dc.bibliographiccitation.volume","139"],["dc.contributor.author","Gabor, Vivian"],["dc.contributor.author","Gerken, Martina"],["dc.date.accessioned","2018-11-07T09:08:35Z"],["dc.date.available","2018-11-07T09:08:35Z"],["dc.date.issued","2012"],["dc.description.abstract","For the study of higher order cognition, the matching to sample procedure presents an established method to test relational concept learning in several species. In the present study we designed a method of testing ponies via a computer based model. We used the advantages of an automatic stimulus control system which enabled a better standardization of stimulus presentation and sequencing, and shorter test periods for the animals. Three stages of learning were used to prepare seven Shetland ponies for matching to sample and final transfer tests. Learning criterion was set to 80% on two consecutive sessions including 20 trials per session. In the pretest, all seven ponies solved the operant conditioning task to push one of two buttons to receive a reward. Learning step 1 included the association between a stimulus presented on one side of a LCD screen and pushing the related button, which was accomplished by five ponies between sessions 8 and 55. Four individuals learnt the next step and were able to relate geometric symbols to each other in a matching to sample arrangement. In a subsequent test the ponies successfully transferred the learned task to completely new stimuli within 2-8 sessions with a performance level above 80%. We discuss several learning strategies which could have been involved in the observed learning process. The correct initial responses in the transfer tests suggest that ponies are able to acquire at least relational rules and transfer these to new stimuli. (C) 2012 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.applanim.2012.04.010"],["dc.identifier.isi","000306208600011"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26065"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0168-1591"],["dc.title","Cognitive testing in horses using a computer based apparatus"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]