Delayed onsets are not necessary for generating distractor quitting thresholds effects in visual search

Area of Science:

• Cognitive Psychology
• Visual Perception
• Human Factors

Background:

• Salient distractors are known to influence visual search behavior.
• The Quitting Threshold Effect (QTE) describes how distractors can lower the threshold for abandoning a search.
• Previous research suggested delayed onset of distractors was crucial for the QTE.

Purpose of the Study:

• To investigate whether the timing of a salient distractor modulates the Quitting Threshold Effect (QTE).
• To determine if delayed distractor onset is necessary for lowered quitting thresholds in visual search.

Main Methods:

• Two experiments were conducted using a target detection visual search task.
• Participants searched for a target among filler items with salient singleton distractors.
• Distractor onset timing varied: simultaneous, delayed (100 ms, 250 ms), or پیشین (100 ms).

Main Results:

• Robust distractor Quitting Threshold Effects (QTEs) were observed in both experiments.
• Salient distractors consistently decreased target-absent search speed and increased target-present error rates.
• The timing of the salient distractor's onset did not significantly alter these effects.

Conclusions:

• The Quitting Threshold Effect (QTE) in visual search is not dependent on a delayed onset of salient distractors.
• Salient distractors impact search efficiency and accuracy irrespective of their temporal presentation relative to other stimuli.
• These findings refine our understanding of attentional capture and decision-making processes in visual search.