Duration judgments are mediated by the similarity with the temporal context

Area of Science:

• Cognitive Psychology
• Neuroscience
• Psychophysics

Background:

• Perception of event duration is susceptible to external influences.
• Simultaneous timing information can lead to a central tendency effect, averaging perceived durations.
• The impact of distractors on duration judgment requires further investigation regarding temporal similarity.

Purpose of the Study:

• To investigate how the central tendency effect in duration judgment depends on the temporal similarity between target and distractor stimuli.
• To quantify the influence of simultaneous distractors on the perceived duration of a target event.

Main Methods:

• A duration judgment task was employed with 22 participants.
• Participants compared the duration of identical 1-second targets.
• Targets were presented alongside simultaneous distractors of varying durations (0.3, 0.7, 1.5, or 3 seconds).

Main Results:

• A significant central tendency effect was observed, biasing target duration judgments towards distractor durations.
• The magnitude of this bias was dependent on the temporal difference between target and distractor durations.
• A novel model based on duration-channels effectively explains the observed central tendency effect.

Conclusions:

• Simultaneous distractors systematically influence perceived duration, demonstrating a robust central tendency effect.
• The temporal similarity between stimuli modulates the strength of this distractor effect.
• A duration-channel model with a single parameter accurately captures the decay of this effect with increasing temporal dissimilarity.