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Related Experiment Video

Updated: May 28, 2026

Eye Movements in Visual Duration Perception: Disentangling Stimulus from Time in Predecisional Processes

Eye Movements in Visual Duration Perception: Disentangling Stimulus from Time in Predecisional Processes

Published on: January 19, 2024

Determining the capacity of time-based selection.

Derrick G Watson¹, Melina A Kunar

¹Department of Psychology, University of Warwick, Coventry CV4 7AL, United Kingdom. d.g.watson@warwick.ac.uk

Journal of Experimental Psychology. Human Perception and Performance

|October 19, 2011

Summary

This summary is machine-generated.

Visual marking prioritizes new items but has a capacity limit. Selecting multiple new items shows this limit is around six to seven, depending on stimulus properties.

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Area of Science:

Cognitive Psychology
Visual Perception
Attention Studies

Background:

Visual marking allows suppression of distractor items for future selection.
This mechanism prioritizes new stimuli over previously seen ones.
Previous research suggested a high capacity for visual marking.

Purpose of the Study:

To investigate the capacity limits of the visual marking mechanism.
To examine performance when selecting and responding to multiple new stimuli.
To determine how stimulus properties influence selection capacity.

Main Methods:

Five experiments were conducted to measure performance in selecting and responding to all new stimuli.
The study focused on tasks requiring the prioritization of new visual items.
Performance was assessed based on the number of items selected and responded to.

Main Results:

The visual marking mechanism exhibits a capacity limit of approximately six to seven items when selecting multiple new stimuli.
This capacity limit is influenced by the specific properties of the visual stimuli.
Intentional prioritization of new stimuli is constrained by this capacity.

Conclusions:

The capacity of visual marking is not unlimited, particularly for multiple item selection.
Time-based selection and attentional capacity limits play crucial roles in multiple item selection tasks.
Task demands significantly impact the effectiveness of prioritizing new stimuli.