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Psicothema was founded in Asturias (northern Spain) in 1989, and is published jointly by the Psychology Faculty of the University of Oviedo and the Psychological Association of the Principality of Asturias (Colegio Oficial de Psicólogos del Principado de Asturias).
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Psicothema, 2007. Vol. Vol. 19 (nº 1). 163-170




ROC parameters in item and context recognition

Salvador Algarabel and Alfonso Pitarque

Universidad de Valencia

Conflicting theories argue that recognition is achieved either by familiarity exclusively, or by a mixture of familiarity and recollection. We explore in three experiments the goodness of fit of both positions to experimental data in which context information is manipulated. In Experiments 1 and 2, we explore the availability of context information in recognition, testing the focus stimulus, its context, and their associative relation. In Experiment 3, participants were confronted with a plurality task in an attempt to force them to use the peripheral information in recognition. The results show that people acquire specific associative information, and although overall recognition performance was not affected by the use of context, receiver operating characteristic (ROC) analysis showed that people use a duality of processes in recognition.

Parámetros ROC en el reconocimiento de ítems y contextos. Las dos principales posiciones teóricas respecto al reconocimiento arguyen que en éste intervienen sólo la familiaridad, o la familiaridad y el recuerdo conjuntamente. En tres experimentos analizamos la bondad del ajuste de ambas posiciones respecto a datos experimentales donde manipulamos la información contextual asociada al ítem de estudio. En los experimentos 1 y 2 analizamos la disponibilidad de la información contextual tanto en el reconocimiento del ítem, como del contexto, como de su relación asociativa. En el experimento 3 sometimos a los sujetos a una tarea de pluralidad con el propósito de que se vieran forzados a usar la información contextual en el reconocimiento. Los resultados muestran que la gente adquiere información asociativa específica, aunque el reconocimiento global de los ítems no se ve afectado por el contexto. Los análisis ROC muestran que la gente usa dos procesos en el reconocimiento.

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