Journal
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE
Volume 33, Issue 5, Pages 1062-1075Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0096-1523.33.5.1062
Keywords
attention; working memory; dual-task interference; flanker interference; executive control
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Funding
- National Research Foundation of Korea [인06A1605, 2006-06953, M103KV01002105K220102110] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- NEI NIH HHS [EY014193] Funding Source: Medline
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Load theory predicts that concurrent working memory load impairs selective attention and increases distractor interference (N. Lavie, A. Hirst, J. W. de Fockert, & E. Viding, 2004). Here, the authors present new evidence that the type of concurrent working memory load determines whether load impairs selective attention or not. Working memory load was paired with a same/different matching task that required focusing on targets while ignoring distractors. When working memory items shared the same limited-capacity processing mechanisms with targets in the matching task, distractor interference increased. However, when working memory items shared processing with distractors in the matching task, distractor interference decreased, facilitating target selection. A specialized load account is proposed to describe the dissociable effects of working memory load on selective processing depending on whether the load overlaps with targets or with distractors.
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