Symmetry Evaluation by Comparing Acquisition of Conditional Relations in Successive (Go/No-Go) Matching-to-Sample Training

Picanço, Carlos Rafael Fernandes; Barros, Romariz S.

doi:10.1007/s40732-014-0096-x

Cited by 4 publications

(7 citation statements)

References 34 publications

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“…The present study also extends the findings of Picanço and Barros (2015), with symmetry-compatible performance in a capuchin monkey in a successive (Go/No-Go) procedure. The study by Picanço and Barros (2015) was the only one that had previously documented the property of symmetry in a capuchin monkey by comparing symmetry-consistent and symmetry-inconsistent discrimination acquisition. The present study, together with Picanço and Barros (2015), extend the evaluation of a novel procedure to assess the property of symmetry in a capuchin monkey using a single-subject design.…”

Section: Resultssupporting

confidence: 86%

“…Symmetry has also been successfully demonstrated in pigeons using successive (Go/No-Go) matching procedures, in which identity matching was trained together with arbitrary relations (e.g., Frank, 2007;Frank & Wasserman, 2005;Urcuioli, 2008;Vasconcelos & Urcuioli, 2011). The present study also extends the findings of Picanço and Barros (2015), with symmetry-compatible performance in a capuchin monkey in a successive (Go/No-Go) procedure. The study by Picanço and Barros (2015) was the only one that had previously documented the property of symmetry in a capuchin monkey by comparing symmetry-consistent and symmetry-inconsistent discrimination acquisition.…”

Section: Resultssupporting

confidence: 72%

“…9 (Special Issue) PP. 30 -39 Barros, 2015). Additionally, we believe that a learningset effect (Harlow, 1949) does not explain the results, considering that performance was less accurate in the fourth discrimination training condition (symmetryinconsistent relations) after two baseline training conditions and one symmetry-consistent condition.…”

Section: Assessing Symmetry In Capuchin Monkeysmentioning

confidence: 81%

“…The study by Picanço and Barros (2015) was the only one that had previously documented the property of symmetry in a capuchin monkey by comparing symmetry-consistent and symmetry-inconsistent discrimination acquisition. The present study, together with Picanço and Barros (2015), extend the evaluation of a novel procedure to assess the property of symmetry in a capuchin monkey using a single-subject design. Comparisons of the acquisition of symmetry-consistent and symmetry-inconsistent conditional relations were made across different baseline conditional relations.…”

Section: Resultsmentioning

confidence: 99%

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Assessing Symmetry by Comparing the Acquisition of Symmetric and Nonsymmetric Conditional Relations in a Capuchin Monkey

Filho

Silva

Velasco³

et al. 2016

Int. j. psychol. res.

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Article history: Received: 15-04-2016 Revised: 29-06-2016 Accepted: 12-08-2016 Key words: conditional discrimination; equivalence class formation; symmetry; Sapajus sppThe present study presents a procedure to assess the property of symmetry by comparing the acquisition of conditional relations that are consistent and inconsistent with this property in a capuchin monkey (Sapajus spp.). One young male monkey underwent arbitrary matching-to-sample training. The experiment had four phases: Phase 1.1 (establishing A1B1 and A2B2 relations), Phase 1.2 (reinforcing B1A1 and B2A2 relations, consistent with the property of symmetry), Phase 2.1 (establishing A3B3 and A4B4 relations), and Phase 2.2 (reinforcing B3A4 and B4A3 relations, inconsistent with the property of symmetry). A comparison between Phase 1.2 (consistent) and Phase 2.2 (inconsistent) showed faster acquisition of consistent relations (B1A1 and B2A2) than inconsistent relations (B3A4 and B4A3). The results suggest that the established conditional discriminations may have the property of symmetry and confirm the potential of comparative analysis between the acquisition of conditional discriminations as a promising procedure to evaluate equivalence class formation in nonhuman subjects.

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Section: Resultssupporting

confidence: 86%

Section: Resultssupporting

confidence: 72%

Section: Assessing Symmetry In Capuchin Monkeysmentioning

confidence: 81%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Assessing Symmetry by Comparing the Acquisition of Symmetric and Nonsymmetric Conditional Relations in a Capuchin Monkey

Filho

Silva

Velasco³

et al. 2016

Int. j. psychol. res.

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“…In all the studies, the procedures were designed to minimize control by irrelevant aspects of the stimulus and several incorporated MET. No evidence for symmetry was found in at least four of the studies (Bujedo et al, 2014; Fagot et al, 2018; Medam et al, 2016; Prichard et al, 2015), and three studies found mixed evidence (Picanço & Barros, 2015; Urcuioli & Vasconcelos, 2011; Velasco et al, 2010). While the remaining seven studies report evidence for symmetry in most of the subjects from at least one experiment, the symmetry performances in three studies can be attributed to other variables.…”

Section: Discussionmentioning

confidence: 97%

An update on the search for symmetry in nonhumans

Lionello-Denolf

2020

J Exper Analysis Behavior

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Sidman et al.'s (1982) failure to find evidence for symmetry (bidirectional associations between stimuli) in monkeys and baboons set the stage for decades of work on emergent relations in nonhumans. They attributed the failure to the use of procedures that did not (1) promote stimulus control based on the relation between the sample and correct comparison and (2) reduce control by irrelevant stimulus features. Previous reviews of symmetry in nonhumans indicated that multiple exemplar training and successive matching might encourage appropriate stimulus control. This review examined 16 studies that investigated symmetry in 94 subjects, including pigeons, rats, capuchin monkeys, and baboons. Several studies used alternative training procedures to minimize sources of irrelevant stimulus control, and many combined multiple exemplar training with other procedural modifications. Symmetry was observed in approximately 30% of subjects. Studies that reported the strongest evidence for symmetry used successive matching‐to‐sample procedures that included training on both symbolic and identity relations, and studies finding mixed evidence employed alternative methods. These studies highlight the challenge in creating training procedures that promote symmetry and the need to assess the underlying sources of control on positive demonstrations.

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