ABSTRACT
We studied the effect of emotion generated by IAPS (International Affective Picture System) pictures on incidental recognition of these pictures for short retention periods (15 min). Memorization distraction tasks and reaction time tasks were used together with short exposure times (2 seconds per picture) in order to prevent a high recognition rate that would impede testing for the effect of emotion on discrimination parameters (A´) and response bias (B´´D) (ceiling effect). We used 80 pictures representing the medium and high levels of two-dimensional emotional space. The results showed greater discrimination and a more conservative response style to unpleasant and medium arousal level pictures. These pictures produced higher confidence and lower response times in the recognition phase. The results can be explained by the negative content of the pictures and activation level effects on attentional processing and memory, and can be interpreted as a phenomenon that is evolutionarily adaptive.
Subject(s)
Adaptation, Physiological/physiology , Emotions/physiology , Pattern Recognition, Visual/physiology , Signal Detection, Psychological/physiology , Adolescent , Adult , Arousal , Attention/physiology , Confidence Intervals , Female , Humans , Male , Reaction Time , Young AdultABSTRACT
Se estudió el efecto de la emoción generada a través de fotografías del IAPS (International Affective Picture System) sobre el reconocimiento incidental de dichas fotografías con períodos de retención cortos (15 min). Se utilizaron tareas distractoras de memorización y tiempo de reacción, junto a tiempos de exposición breves (2 segundos por fotografía), con el fin de evitar que la elevada tasa de reconocimiento presente en este tipo de trabajos impida comprobar el efecto de la emoción sobre los parámetros de discriminación (A´) y sesgo de respuesta (B´´D) (efecto techo). Para este fin se utilizaron 80 fotografías representativas de los niveles medio y alto del espacio afectivo bidimensional. Los resultados informan de una mayor discriminación y un estilo de respuesta más conservador para las fotografías desagradables y las de arousal medio. Para este tipo de fotografías se obtuvo una mayor confianza y menores tiempos de respuesta en la fase de reconocimiento. Los resultados pueden explicarse por los efectos que el contenido negativo y el nivel de activación de las fotografías tienen sobre el procesamiento atencional y la memoria, e interpretarse como un fenómeno que resulta adaptativo evolutivamente (AU)
We studied the effect of emotion generated by IAPS (International Affective Picture System) pictures on incidental recognition of these pictures for short retention periods (15 min). Memorization distraction tasks and reaction time tasks were used together with short exposure times (2 seconds per picture) in order to prevent a high recognition rate that would impede testing for the effect of emotion on discrimination parameters (A´) and response bias (B´´D) (ceiling effect). We used 80 pictures representing the medium and high levels of two-dimensional emotional space. The results showed greater discrimination and a more conservative response style to unpleasant and medium arousal level pictures. These pictures produced higher confidence and lower response times in the recognition phase. The results can be explained by the negative content of the pictures and activation level effects on attentional processing and memory, and can be interpreted as a phenomenon that is evolutionarily adaptive (AU)
