Task-irrelevant stimulus-reward association induces value-driven attentional capture.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Visual Attention

Background:

• Reward influences visual attention, with stimuli associated with reward involuntarily capturing attention (value-driven attentional capture; VDAC).
• Previous studies demonstrated VDAC with task-irrelevant features, but testing occurred during reward exposure.

Purpose of the Study:

• To investigate if task-irrelevant features induce VDAC in a test phase without reward.
• To determine if task relevance is necessary for VDAC from reward-associated features.

Main Methods:

• A flanker task was used for reward-color association learning (training phase).
• A visual search task (test phase) assessed the effect of learned color associations without ongoing reward.
• Experiments manipulated the association of reward-associated colors with targets and distractors, and feature binding.

Main Results:

• VDAC was induced by reward-associated colors even when they were linked to both targets and distractors.
• VDAC occurred when a single color was associated with all letters, indicating target-distractor discrimination is not essential.
• VDAC persisted even when reward-associated colors were presented as frames around letters, not directly on targets, suggesting feature binding is not necessary.

Conclusions:

• Task-irrelevant features can elicit VDAC in the absence of reward during testing.
• VDAC is not dependent on task relevance, suggesting a more indirect reward-associated learning mechanism.
• These findings align VDAC under task-irrelevant conditions with previous findings using target-defining features.