Full text
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| Author(s): |
Cassia Leal da Hora
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Psicologia (IP/SBD) |
| Defense date: | 2009-02-18 |
| Examining board members: |
Paula Debert;
Maria Amalia Pie Abib Andery;
Maria Martha Costa Hübner
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| Advisor: | Paula Debert |
| Abstract | |
Matching-to-sample procedure is widely used for establishing emergent conditional relations. However, adventitious control by location, rather than the conditional control, can be established with this procedure in individuals with autism. With the go/no-go procedure with compound stimuli, participants responses are emitted in a single location. Aiming to assess whether emergent conditional relations could be established in autistic children with a go/no-go procedure with compound stimuli, without the establishment adventitious control by location, two studies were conducted. Study 1 sought to verify if the go/no-go procedure with compound stimuli would establish emergent conditional relations in children diagnosed with autism who had control by the location in training with Matching-to-sample procedure. Four autistic children, who showed adventitious control by location in a matching-to-sample task, were submitted to AB and BC training with the go/no-go procedure with compound stimuli. Responses emitted in the presence of A1B1, A2B2, B1C1 and B2C2 compounds were followed by reinforcers and responses emitted in the presence of A1B2, A2B1, B1C2 and B2C1 were not. After that, participants were submitted to tests to verify emergence of conditional relations (BA, CB, AC and CA) that were not directly trained. The results showed that only one of the four participants met the learning criterion in training and exhibited emergent performances in tests only after retraining the baseline relations. In most of the training sessions, all participants responded to all compounds stimuli. These results show that refrain from responding is difficult to be established with the go/no-go procedure in children with autism. Study 2 was conducted to verify if refrain from responding would be established in children with autism if the duration of compounds that should not control responding in training was gradually increased. Other three children diagnosed with autism were submitted to the same procedure as conducted in Study 1, except that during pre-training and training duration of some compounds were gradually increased in some sessions. Results showed that only one participant met the learning criteria in training, but did not showed emergent performances in tests. The other two participants responded to all compounds in most of the sessions. The results indicate that the gradual increase of stimuli duration did not established refrain from responding for some participants and produced adventitious control by stimuli duration for most of them. Although one participant showed emergent performances with the go/no-go procedure with compound stimuli, this procedure can produce responses to all compounds stimuli even when some compounds duration is gradually increased. (AU) | |