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Especificidad del hablante más allá del léxico: memoria de reconocimiento para oraciones habladas
William Clapp1, Meghan Sumner2
1Department of Linguistics, Stanford University, Building 460, Margaret Jacks Hall 450 Jane Stanford Way, Stanford, CA, 94305, USA. wsclapp@stanford.edu.
Psychonomic bulletin & review
|August 27, 2025
Resumen
La memoria de las oraciones habladas retiene detalles acústicos finos, incluso cuando la atención está dividida. Este efecto de especificidad del hablante muestra la codificación automática del habla, impactando las teorías de comprensión del lenguaje.
Área de la Ciencia:
- Psicología cognitiva
- Psicolingüística
- Neurociencia auditiva
Sus antecedentes:
- El conocimiento establecido indica que las representaciones mentales del lenguaje contienen detalles acústicos de grano fino almacenados en la memoria episódica.
- El efecto de especificidad del hablante, observado en el reconocimiento de palabras, demuestra un recuerdo superior de las palabras pronunciadas por el mismo versus diferentes hablantes.
- Las investigaciones anteriores se centraron exclusivamente en palabras aisladas, dejando sin examinar el papel del detalle acústico en el procesamiento de oraciones.
Objetivo del estudio:
- Investigar si se codifican y recuperan detalles acústicos de grano fino para las oraciones habladas.
- Examinar la automatización de la codificación acústica de grano fino mediante la manipulación de la atención durante la codificación.
- Extender los métodos tradicionales de reconocimiento de la memoria a estímulos a nivel de oración.
Principales métodos:
- Utilizó oraciones habladas como estímulos en experimentos de memoria de reconocimiento.
- Carga de atención manipulada durante la codificación mediante el empleo de condiciones de atención completa y de atención dividida.
- Precisión medida y tiempo de reacción para evaluar el rendimiento de la memoria.
Principales resultados:
- Los participantes demostraron una mayor precisión para las oraciones repetidas por el mismo hablante en comparación con los hablantes diferentes.
- El reconocimiento de oraciones fue más rápido y más preciso bajo Atención completa que Atención dividida.
- El efecto de especificidad del hablante fue más pronunciado en Atención Dividida, lo que sugiere una codificación implícita.
Conclusiones:
- Proporciona evidencia de la especificidad acústica en el nivel de oración en la memoria.
- Destaca la naturaleza implícita y automática de la codificación de detalles acústicos de grano fino.
- Sugiere que la asignación de recursos cognitivos juega un papel crítico en las representaciones del lenguaje basadas en la memoria.
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