CONCEPT
Task-Set Reconfiguration
The cognitive cost of switching the executive control system's configuration from one task's demands to another's — measurable even for simple, well-practiced tasks.
Task-set reconfiguration is the process by which executive control adjusts its settings when switching between tasks. A task-set is the configuration of biases, facilitations, and response mappings that organize cognitive processing for a specific task: which stimulus features to attend to, which associations to activate, which responses to prime, which competing information to suppress. Switching requires deactivating the old task-set and activating a new one. Stephen Monsell's research demonstrated that this reconfiguration incurs measurable time costs even for simple tasks like alternating between adding and subtracting. For complex knowledge work, the costs are substantially higher because the configurations are more elaborate, the adjustments more extensive, and the reconfiguration rarely complete on the first trial after a switch. Performance continues improving across initial trials of the new task as the new task-set gradually displaces the old — exactly the pattern attention residue would predict.
In The You On AI Field Guide
The mechanism is distinct from attention residue but complementary. Monsell's task-set reconfiguration describes the forward-looking cost of preparing for the new task;