Luis Martínez

Propuesta de índices de gestión de servicios médico-quirúrgicos hospitalarios mediante técnicas estadísticas multivariantes

Data on admissions to a University Hospital during 2003 were analyzed. Number ofdischarges, lethality rate, re-admission rate, number of outpatient consultations, length ofhospital stay and surgical complexity index were analyzed, using information obtained by theOperations Management Department. The Principal Components Analysis (PCA) technique wasapplied and the R correlation matrix was used.

Alteraciones en las representaciones fonológicas de la memoria de trabajo en niños preescolares con trastorno específico del lenguaje

Resumen El objetivo de este trabajo es estudiar si los ninos preescolares con trastorno especifico del lenguaje (TEL) moderado manifiestan dificultades en algunos aspectos de sus representaciones fonologicas en la memoria de trabajo a partir del analisis de la capacidad para procesar itemes iniciales y finales de series de logotomas (palabras inventadas o sin significado) y palabras. Los resultados demuestran que la hipotesis de la alteracion en las representaciones fonologicas en ninos con TEL es altamente plausible. Los ninos con TEL manifiestan un desempeno inferior al de los ninos sin TEL en el procesamiento de logotomas y palabras iniciales, pero no en logotomas y palabras finales. Esto significaria que destinan sus recursos limitados a procesar mas los itemes finales de series de logotomas y palabras debido a limitaciones en su memoria de trabajo fonologica. Se discuten las implicancias teoricas y clinicas de los resultados

The structure of conversation in mentally retarded children

The conversational structure of eight children with mild to moderate retardation was examined in this study. Frequency of conversational exchanges, types of exchanges, initiation and continuity within exchanges, and exchange complexity were determined in conversational samples obtained during free-play interactions between each child and an unfamiliar adult. The conversational structure of this group of retarded children was compared to that of one group of normally developing children matched on the basis of general language level, and to another group of normally developing children matched by chronological age. Retarded children were similar to language-matched control subjects in terms of overall frequency of exchanges, frequency of type I exchanges and a lower frequency of complex exchanges, but they initiated and continued exchanges in a way that was consistent with both control groups. A characteristic pattern displayed by retarded children was the high use of simple exchanges and the high producti...