The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform
Terry L. Maple - One of the best experts on this subject based on the ideXlab platform.
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can black and white ruffed lemurs varecia variegata solve Object Permanence tasks
American Journal of Primatology, 2013Co-Authors: Suma Mallavarapu, Bonnie M. Perdue, Tara S. Stoinski, Terry L. MapleAbstract:We examined Object Permanence in black-and-white-ruffed lemurs (Varecia variegata) at Zoo Atlanta. A series of visible and invisible displacement tasks with suitable controls were presented to five adult subjects. Subjects performed significantly above chance on all regular tasks, except for the double invisible displacements. Subjects failed visible and invisible controls. Failure on the control trials did not appear to be because subjects used the “last box touched” strategy (subjects did not choose the last box touched significantly more than expected by chance). However, a substantial percentage of choices was made to the last box touched by the experimenter. There was no significant difference between this percentage, and the percentage of choices made to the baited box (on both visible and invisible controls), which indicates that subjects were drawn to both boxes which the experimenter visited/touched, and thus failed the controls. Based on the results from the present study, we believe that there is no evidence that black-and-white ruffed lemurs understand visible and invisible tasks in the traditional Object Permanence battery. Am. J. Primatol. 75:376-386, 2013. © 2013 Wiley Periodicals, Inc.
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Can Black‐and‐White Ruffed Lemurs (Varecia variegata) Solve Object Permanence Tasks?
American Journal of Primatology, 2013Co-Authors: Suma Mallavarapu, Bonnie M. Perdue, Tara S. Stoinski, Terry L. MapleAbstract:We examined Object Permanence in black-and-white-ruffed lemurs (Varecia variegata) at Zoo Atlanta. A series of visible and invisible displacement tasks with suitable controls were presented to five adult subjects. Subjects performed significantly above chance on all regular tasks, except for the double invisible displacements. Subjects failed visible and invisible controls. Failure on the control trials did not appear to be because subjects used the “last box touched” strategy (subjects did not choose the last box touched significantly more than expected by chance). However, a substantial percentage of choices was made to the last box touched by the experimenter. There was no significant difference between this percentage, and the percentage of choices made to the baited box (on both visible and invisible controls), which indicates that subjects were drawn to both boxes which the experimenter visited/touched, and thus failed the controls. Based on the results from the present study, we believe that there is no evidence that black-and-white ruffed lemurs understand visible and invisible tasks in the traditional Object Permanence battery. Am. J. Primatol. 75:376-386, 2013. © 2013 Wiley Periodicals, Inc.
Suma Mallavarapu - One of the best experts on this subject based on the ideXlab platform.
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can black and white ruffed lemurs varecia variegata solve Object Permanence tasks
American Journal of Primatology, 2013Co-Authors: Suma Mallavarapu, Bonnie M. Perdue, Tara S. Stoinski, Terry L. MapleAbstract:We examined Object Permanence in black-and-white-ruffed lemurs (Varecia variegata) at Zoo Atlanta. A series of visible and invisible displacement tasks with suitable controls were presented to five adult subjects. Subjects performed significantly above chance on all regular tasks, except for the double invisible displacements. Subjects failed visible and invisible controls. Failure on the control trials did not appear to be because subjects used the “last box touched” strategy (subjects did not choose the last box touched significantly more than expected by chance). However, a substantial percentage of choices was made to the last box touched by the experimenter. There was no significant difference between this percentage, and the percentage of choices made to the baited box (on both visible and invisible controls), which indicates that subjects were drawn to both boxes which the experimenter visited/touched, and thus failed the controls. Based on the results from the present study, we believe that there is no evidence that black-and-white ruffed lemurs understand visible and invisible tasks in the traditional Object Permanence battery. Am. J. Primatol. 75:376-386, 2013. © 2013 Wiley Periodicals, Inc.
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Can Black‐and‐White Ruffed Lemurs (Varecia variegata) Solve Object Permanence Tasks?
American Journal of Primatology, 2013Co-Authors: Suma Mallavarapu, Bonnie M. Perdue, Tara S. Stoinski, Terry L. MapleAbstract:We examined Object Permanence in black-and-white-ruffed lemurs (Varecia variegata) at Zoo Atlanta. A series of visible and invisible displacement tasks with suitable controls were presented to five adult subjects. Subjects performed significantly above chance on all regular tasks, except for the double invisible displacements. Subjects failed visible and invisible controls. Failure on the control trials did not appear to be because subjects used the “last box touched” strategy (subjects did not choose the last box touched significantly more than expected by chance). However, a substantial percentage of choices was made to the last box touched by the experimenter. There was no significant difference between this percentage, and the percentage of choices made to the baited box (on both visible and invisible controls), which indicates that subjects were drawn to both boxes which the experimenter visited/touched, and thus failed the controls. Based on the results from the present study, we believe that there is no evidence that black-and-white ruffed lemurs understand visible and invisible tasks in the traditional Object Permanence battery. Am. J. Primatol. 75:376-386, 2013. © 2013 Wiley Periodicals, Inc.
Tara S. Stoinski - One of the best experts on this subject based on the ideXlab platform.
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can black and white ruffed lemurs varecia variegata solve Object Permanence tasks
American Journal of Primatology, 2013Co-Authors: Suma Mallavarapu, Bonnie M. Perdue, Tara S. Stoinski, Terry L. MapleAbstract:We examined Object Permanence in black-and-white-ruffed lemurs (Varecia variegata) at Zoo Atlanta. A series of visible and invisible displacement tasks with suitable controls were presented to five adult subjects. Subjects performed significantly above chance on all regular tasks, except for the double invisible displacements. Subjects failed visible and invisible controls. Failure on the control trials did not appear to be because subjects used the “last box touched” strategy (subjects did not choose the last box touched significantly more than expected by chance). However, a substantial percentage of choices was made to the last box touched by the experimenter. There was no significant difference between this percentage, and the percentage of choices made to the baited box (on both visible and invisible controls), which indicates that subjects were drawn to both boxes which the experimenter visited/touched, and thus failed the controls. Based on the results from the present study, we believe that there is no evidence that black-and-white ruffed lemurs understand visible and invisible tasks in the traditional Object Permanence battery. Am. J. Primatol. 75:376-386, 2013. © 2013 Wiley Periodicals, Inc.
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Can Black‐and‐White Ruffed Lemurs (Varecia variegata) Solve Object Permanence Tasks?
American Journal of Primatology, 2013Co-Authors: Suma Mallavarapu, Bonnie M. Perdue, Tara S. Stoinski, Terry L. MapleAbstract:We examined Object Permanence in black-and-white-ruffed lemurs (Varecia variegata) at Zoo Atlanta. A series of visible and invisible displacement tasks with suitable controls were presented to five adult subjects. Subjects performed significantly above chance on all regular tasks, except for the double invisible displacements. Subjects failed visible and invisible controls. Failure on the control trials did not appear to be because subjects used the “last box touched” strategy (subjects did not choose the last box touched significantly more than expected by chance). However, a substantial percentage of choices was made to the last box touched by the experimenter. There was no significant difference between this percentage, and the percentage of choices made to the baited box (on both visible and invisible controls), which indicates that subjects were drawn to both boxes which the experimenter visited/touched, and thus failed the controls. Based on the results from the present study, we believe that there is no evidence that black-and-white ruffed lemurs understand visible and invisible tasks in the traditional Object Permanence battery. Am. J. Primatol. 75:376-386, 2013. © 2013 Wiley Periodicals, Inc.
Bonnie M. Perdue - One of the best experts on this subject based on the ideXlab platform.
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can black and white ruffed lemurs varecia variegata solve Object Permanence tasks
American Journal of Primatology, 2013Co-Authors: Suma Mallavarapu, Bonnie M. Perdue, Tara S. Stoinski, Terry L. MapleAbstract:We examined Object Permanence in black-and-white-ruffed lemurs (Varecia variegata) at Zoo Atlanta. A series of visible and invisible displacement tasks with suitable controls were presented to five adult subjects. Subjects performed significantly above chance on all regular tasks, except for the double invisible displacements. Subjects failed visible and invisible controls. Failure on the control trials did not appear to be because subjects used the “last box touched” strategy (subjects did not choose the last box touched significantly more than expected by chance). However, a substantial percentage of choices was made to the last box touched by the experimenter. There was no significant difference between this percentage, and the percentage of choices made to the baited box (on both visible and invisible controls), which indicates that subjects were drawn to both boxes which the experimenter visited/touched, and thus failed the controls. Based on the results from the present study, we believe that there is no evidence that black-and-white ruffed lemurs understand visible and invisible tasks in the traditional Object Permanence battery. Am. J. Primatol. 75:376-386, 2013. © 2013 Wiley Periodicals, Inc.
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Can Black‐and‐White Ruffed Lemurs (Varecia variegata) Solve Object Permanence Tasks?
American Journal of Primatology, 2013Co-Authors: Suma Mallavarapu, Bonnie M. Perdue, Tara S. Stoinski, Terry L. MapleAbstract:We examined Object Permanence in black-and-white-ruffed lemurs (Varecia variegata) at Zoo Atlanta. A series of visible and invisible displacement tasks with suitable controls were presented to five adult subjects. Subjects performed significantly above chance on all regular tasks, except for the double invisible displacements. Subjects failed visible and invisible controls. Failure on the control trials did not appear to be because subjects used the “last box touched” strategy (subjects did not choose the last box touched significantly more than expected by chance). However, a substantial percentage of choices was made to the last box touched by the experimenter. There was no significant difference between this percentage, and the percentage of choices made to the baited box (on both visible and invisible controls), which indicates that subjects were drawn to both boxes which the experimenter visited/touched, and thus failed the controls. Based on the results from the present study, we believe that there is no evidence that black-and-white ruffed lemurs understand visible and invisible tasks in the traditional Object Permanence battery. Am. J. Primatol. 75:376-386, 2013. © 2013 Wiley Periodicals, Inc.
François Y. Doré - One of the best experts on this subject based on the ideXlab platform.
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Object Permanence and working memory in cats (Felis catus).
Journal of Experimental Psychology: Animal Behavior Processes, 1994Co-Authors: Sonia Goulet, François Y. Doré, Robert RousseauAbstract:Cats (Felis catus) find an Object when it is visibly moved behind a succession of screens. However, when the Object is moved behind a container and is invisibly transferred from the container to the back of a screen, cats try to find the Object at or near the container rather than at the true hiding place. Four experiments were conducted to study search behavior and working memory in visible and invisible displacement tests of Object Permanence. Experiment 1 compared performance in single and in double visible displacement trials. Experiment 2 analyzed search behavior in invisible displacement tests and in analogs using a transparent container. Experiments 3 and 4 tested predictions made from Experiment 1 and 2 in a new situation of Object Permanence. Results showed that only the position changes that cats have directly perceived are encoded and activated in working memory, because they are unable to represent or infer invisible movements.
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cross sectional study of Object Permanence in domestic puppies canis familiaris
Journal of Comparative Psychology, 1994Co-Authors: Sylvain Gagnon, François Y. DoréAbstract:Visual accommodation and Object Permanence tests were administered to 70 puppies (Canis familiaris), aged 4 weeks to 9 months. The results showed that understanding of visible displacement problems emerged at the 5th weeks and developed rapidly until the 8th week. Although the search behaviors of older puppies were more flexible, no further significant development was observed between 8 weeks and 9 months. The results on invisible displacement tests suggest that understanding of invisible displacement problems appears around the 1st year in dogs' development.
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Search behavior in various breeds of adult dogs (Canis familiaris): Object Permanence and olfactory cues.
Journal of Comparative Psychology, 1992Co-Authors: Sylvain Gagnon, François Y. DoréAbstract:Human analog tests of Object Permanence were administered to various breeds of adult dogs (Canis familiaris). Experiment 1 showed that the performance of terriers, sporting, and working dogs did not differ. Dogs succeeded in solving invisible displacement problems, but performance was lower than in visible displacement tests. Familiarity with the task had some influence because invisible displacement tests were more successful if they were preceded by visible displacement tests. In Experiment 2, odor cues from the target Object and the hiding screens were available or were masked. Results confirmed that success was lower in invisible than in visible displacement tests and that these problems were solved on the basis of representation of visual information rather than on the basis of olfactory cues or of local rule learning. Dogs are compared with other species that display Stage 6 Object Permanence.
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Cognitive development in kittens (Felis catus): an observational study of Object Permanence and sensorimotor intelligence.
Journal of Comparative Psychology, 1991Co-Authors: Claude Dumas, François Y. DoréAbstract:Spontaneous behavior of kittens (Felis catus) was filmed from birth until the end of Month 5 and coded according to Piagetian criteria of sensorimotor intelligence (SI) and Object Permanence (OP). Data revealed that Stages 2, 3, and 4 of SI were reached at Days 10, 26, and 45, respectively, whereas Stages 2, 3, and 4 of OP were reached at Days 31, 37, and 41, respectively. Spontaneous search behavior was exhibited both in searching for an Object that disappeared and in hiding while moving toward a target Object. From Day 45 on, search behavior was integrated into a playful social interaction in the form of hide-and-seek. Hence, kittens' spontaneous activity provided them with contexts in which OP was necessary for activity. Lastly, it is proposed that the mobility of both social and physical Objects triggered circular activity in this species.
