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Analysis of transitivity during conditional relations training in pigeons

Grant number: 06/04465-4
Support Opportunities:Scholarships in Brazil - Post-Doctorate
Effective date (Start): February 01, 2007
Effective date (End): September 18, 2009
Field of knowledge:Humanities - Psychology - Experimental Psychology
Principal Investigator:Gerson Aparecido Yukio Tomanari
Grantee:Miriam Garcia Mijares
Host Institution: Instituto de Psicologia (IP). Universidade de São Paulo (USP). São Paulo , SP, Brazil


When trained in conditional relations among stimuli from different sets, an organism may present new conditional relations showing reflexivity, simmetry and transitivity, without any additional training. The formation of stimulus equivalence classes has been demonstrated in humans, but in infrahuman subjects and in pre-verbal humans the evidence is scarce and controversial. One reason for the difficulty in showing stimulus equivalence in infra-humans and pre-verbal humans may be the neglect of the specificities of these populations when using the experimental procedures originated from verbal human studies. The first aim of this project is to evaluate a procedure for the acquisition of conditional relations that would allow the comparison between the acquisition of a set of conditional discriminations related by transitivity and acquisition of another set of conditional discriminations not related by transitivity.

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