Priming or executive control? Associative priming of cue encoding increases "switch costs" in the explicit task-cuing...

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Factors

Background:

• Task-cuing procedures are used to study executive control and task switching.
• Response times are typically faster for task repetitions than alternations.
• This difference is often attributed to the time needed for executive control to reconfigure task sets.

Purpose of the Study:

• To investigate whether the facilitation in task-cuing procedures is due to executive control or cue encoding.
• To examine the role of associative relationships between successive cues in task performance.
• To differentiate between processes requiring online executive control and those that do not.

Main Methods:

• Participants performed tasks signaled by explicit cues.
• The interval between cue and target onset was manipulated (time course function).
• Associative and unrelated cue transitions were compared.

Main Results:

• Response times were faster when successive cues were associatively related compared to unrelated cues.
• Facilitation effects were observed even with unrelated cue-target intervals.
• Modeling indicated that the observed facilitation was attributable to cue encoding processes.

Conclusions:

• The facilitation observed in task-cuing procedures may not solely reflect executive control.
• Priming of cue encoding, particularly with associatively related cues, contributes to faster responses.
• These findings suggest that some aspects of task switching may rely on pre-attentive or automatic processes rather than solely online executive control.