Facilitation and interference of the automatic information processing on a reaction time task to threat-relevant stimuli

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ISSN: 0214-9915
E-ISSN: 1886-144X

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Colegio Oficial de Psicólogos de Asturias
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The purpose of this experiment was to study if the threat-relevant stimuli receive automatic processing when presented effectively masked in a priming paradigm. The prime consisted of an angry face (A) as threat-relevant stimulus and a face with neutral expression (N) as threat-irrelevant stimulus. The same stimuli (A and N) were used as target (or mask), giving four masking conditions (A/A, N/N, A/N and N/A). Furthermore, the target was considered an imperative stimulus for a reaction time (RT) task. Thirty-two subjects were exposed to 10 trials of each masking conditions with a stimulus-onset asynchrony (SOA) of 34 milliseconds (ms). The same number of subjects received the same trials, but with a SOA of 51 ms, this being an unmasking presentation of the stimulus. The results demonstrate that an effective masking presentation of a threat-relevant stimulus produces either facilitation or interference with the RT task, depending on whether the target (mask) is a threat-relevant or a threat-irrelevant stimulus
El objetivo de este experimento era estudiar si los estímulos amenazantes reciben procesamiento automático cuando son presentados eficazmente enmascarados en un paradigma de priming. El prime consistió en un rostro con expresión amenazante (A) y una cara con expresión neutra como estímulo irrelevante de amenaza (N). Los mismos estímulos fueron utilizados como target (o máscara), dando lugar a cuatro condiciones de enmascaramiento (A/A, N/N, A/N y N/A). Además, el target fue utilizado como un estímulo imperativo para una tarea de tiempo de reacción (TR). Treinta y dos sujetos fueron expuestos a 10 ensayos de cada condición de enmascaramiento con una asincronía del estímulo (SOA) de 34 milisegundos (ms). Otros tantos sujetos recibieron los mismos ensayos, pero con un SOA de 51 ms. Los resultados demuestran que la presentación eficazmente enmascarada de los estímulos amenazantes produce facilitación o interferencia con la tarea de TR, dependiendo de si el target (máscara) consiste en un estímulo relevante o irrelevante de amenaza

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Marcos, J. L., & Redondo, J. (2005). Facilitation and interference of the automatic information processing on a reaction time task to threat-relevant stimuli. Psicothema, 17(2), 332-337

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© 2005 Psicothema