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Abstract
People are notably limited in processing information from the outside world. For instance, they frequently fail to identify the second of two targets presented in close succession (attentional blink, AB). Theories of the AB have mostly focused upon early stimuli processing. However, here we show that late, goal-completion processes play an important role. We report findings from a rapid serial visual presentation task with three targets (T1, T2, and T3). Participants set to achieve one single goal for T1 and T2 (reporting the sum of the two), and to detect T3, showed an AB effect upon T3 but not upon T2, while participants set to achieve separate goals for the three targets showed an AB effect upon both T2 and T3. This finding raises questions about the nature of AB, suggesting that theories of the AB must take into account processes involved in goal switching.
Acknowledgements
This study was supported by MIUR (Italian Ministry of Education, University, and Research) Grant 2001088797-006 to FF.