The role of attentional networks in voluntary task switching

Arrington, Catherine M.; Yates, M.M. · 2009 · OpenAlex-citations

DOI: 10.3758/pbr.16.4.660

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Summary

This study investigates the relationship between individual differences in attentional networks and behavior in voluntary task-switching environments. Motivated by the need to understand the cognitive mechanisms underlying multitasking variability, the authors examined how three distinct attentional networks—alerting, orienting, and executive control—correlate with both task choice and task performance. The research addresses a gap in previous literature, which had largely focused on performance metrics while neglecting the cognitive processes governing voluntary task selection. The methodology involved 64 undergraduate participants who completed two protocols: the Attention Network Test (ANT) and a voluntary task-switching procedure. The ANT measured the efficiency of the alerting, orienting, and executive control networks using cue and flanker manipulations. In the voluntary task-switching paradigm, participants performed even/odd judgments on digits and consonant/vowel judgments on letters without external cues, instructed to switch tasks randomly. The study analyzed correlations between ANT scores and two primary dependent measures from the switching task: switch probability (task choice) and response time switch costs (task performance). The results revealed a dissociation between the attentional networks supporting task choice and those supporting task performance. Task choice, measured by switch probability, was significantly correlated with the executive control network score; individuals with more efficient executive control (lower conflict resolution costs) switched tasks more frequently. Conversely, task performance, measured by response time switch costs, was significantly correlated with the alerting network score; individuals with larger alerting scores (indicating poorer maintenance of a vigilant state) exhibited greater switch costs. The orienting network showed no significant correlation with either measure. Additionally, switch probability and switch costs were weakly correlated within the task-switching data, suggesting they reflect distinct cognitive processes. These findings imply that voluntary multitasking involves separate cognitive mechanisms for selecting tasks and executing them. Efficient executive control facilitates the resolution of conflict between competing task sets, thereby promoting task switching. In contrast, maintaining alertness is critical for minimizing performance costs during switches, likely by supporting the timely reconfiguration of task sets. The study concludes that task choice and performance are not governed by a single unified executive process but rather rely on distinct attentional networks, offering a more nuanced understanding of individual differences in multitasking behavior.

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Topics

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• task switching
• executive function