Fernando Pessotto

Evidências de validade convergente para o teste de Wartegg

Convergent validity evidences are observable on studies applying external variables that show some degree of relation. Present study aimed to verify such evidences for Wartegg test by using Rorschach (R-PAS). A cluster analysis was employed since it deals both with alpha and beta coefficients; the second is more conservative for variable grouping estimative. 40 subjects participated on the study, divided on two groups, one composed by schizophrenia diagnosed patients and another of subjects without psychiatric diagnosis history. Ages vary from 21 to 70 (M=40, SD=12,8), 36 male. Results indicated 7 groups of items, 6 composed of variables of the two instruments. Besides that, it was verified by means of logistic regression that one of the groupings shows significance on schizophrenia diagnosis prediction.

Avaliação de transtornos da personalidade em moradores de rua

Este estudo teve com objetivo comparar a prevalencia de tendencias de personalidade patologicas entre moradores de rua, comparando-as com outros grupos. Foram participantes do estudo tres grupos agrupados em moradores de rua, psiquiatricos e nao psiquiatricos (universitarios). Foi instrumento de coleta de dados, o Inventario Dimensional dos Transtornos da Personalidade (IDTP). Este instrumento possibilitou uma avaliacao do perfil das tendencias dos transtornos da personalidade. Entre os resultados encontrados, destaca-se a elevacao em determinadas escalas do IDTP, sugerindo uma tendencia para desconfianca, impulsividade, necessidade de atencao e comportamentos excentricos na amostra de moradores de rua. Como consideracoes, apesar de suas limitacoes quanto ao numero de participantes restrito a uma regiao do pais, e delineamento correlacional, que nao permitem inferencias causais mais seguras, considera-se a importância de novas investigacoes acerca do problema de saude mental do morador de rua visando demarcar este campo de atuacao de modo que novas politicas publicas baseadas em evidencias possam ser tracadas para esta problematica.

Auditory Musical Reasoning Test: an initial study with Item Response Theory

This study investigated internal structure and criterion validity of a test that aims at assessing auditory processing of musical ability (Auditory Musical Reasoning Test, RAu). 162 people of both sexes were evaluated, 56.8% men, aged between 15 and 59 years of age (M=27.5; SD=9.01). Participants were divided among musicians (N=24), amateurs (N=62) and lay people (N=76) according to the extension of their knowledge in music. Full Information Item Factor Analysis verified the dimensionality of the instrument and also the properties of the items via Item Response Theory (IRT). Furthermore, we sought to identify the ability to discriminate between professional musicians, amateurs and lay people. Data showed evidence that the items measure a major dimension (alpha=.92) with high ability to differentiate groups of musicians, amateurs and lay people giving a criterion validity coefficient of r=.68. The results indicate positive evidence of reliability and validity for RAu test.

Test de Raciocinio Auditivo Musical (RAu): estudio inicial a través de la Teoría de Repuesta al Ítem

This study investigated internal structure and criterion validity of a test that aims at assessing auditory processing of musical ability (Auditory Musical Reasoning Test, RAu). 162 people of both sexes were evaluated, 56.8% men, aged between 15 and 59 years of age (M=27.5; SD=9.01). Participants were divided among musicians (N=24), amateurs (N=62) and lay people (N=76) according to the extension of their knowledge in music. Full Information Item Factor Analysis verified the dimensionality of the instrument and also the properties of the items via Item Response Theory (IRT). Furthermore, we sought to identify the ability to discriminate between professional musicians, amateurs and lay people. Data showed evidence that the items measure a major dimension (alpha=.92) with high ability to differentiate groups of musicians, amateurs and lay people giving a criterion validity coefficient of r=.68. The results indicate positive evidence of reliability and validity for RAu test.

Teste de Raciocínio Auditivo Musical (RAu): estudo inicial por meio da Teoria de Reposta ao Item

This study investigated internal structure and criterion validity of a test that aims at assessing auditory processing of musical ability (Auditory Musical Reasoning Test, RAu). 162 people of both sexes were evaluated, 56.8% men, aged between 15 and 59 years of age (M=27.5; SD=9.01). Participants were divided among musicians (N=24), amateurs (N=62) and lay people (N=76) according to the extension of their knowledge in music. Full Information Item Factor Analysis verified the dimensionality of the instrument and also the properties of the items via Item Response Theory (IRT). Furthermore, we sought to identify the ability to discriminate between professional musicians, amateurs and lay people. Data showed evidence that the items measure a major dimension (alpha=.92) with high ability to differentiate groups of musicians, amateurs and lay people giving a criterion validity coefficient of r=.68. The results indicate positive evidence of reliability and validity for RAu test.