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Related Experiment Video

Updated: Jan 24, 2026

Brain Imaging Investigation of the Memory-Enhancing Effect of Emotion

Brain Imaging Investigation of the Memory-Enhancing Effect of Emotion

Published on: May 4, 2011

Do familiar memory items decay?

Timothy J Ricker¹, Joshua Sandry², Evie Vergauwe³

¹Department of Psychology.

Journal of Experimental Psychology. Learning, Memory, and Cognition

|May 21, 2019

Summary

This summary is machine-generated.

Time-based forgetting, or trace decay, occurs even with familiar verbal memory items. This study challenges existing theories by showing that memory loss persists regardless of item familiarity or presentation time.

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Area of Science:

Cognitive Psychology
Neuroscience

Background:

A long-standing debate exists regarding whether time itself causes forgetting from working memory (trace decay).
Previous research yielded conflicting results, often depending on item familiarity and presentation duration.
Familiar items were thought to be resistant to decay, unlike unfamiliar items.

Purpose of the Study:

To investigate the role of item familiarity and presentation time in trace decay.
To challenge prominent theories of trace decay by examining memory for familiar verbal items.
To determine if time-based forgetting is a persistent phenomenon.

Main Methods:

Conducted experiments using familiar verbal memory items, mirroring methodologies of studies on time-based forgetting.
Manipulated presentation time and item familiarity during memory tasks.
Analyzed forgetting rates across different experimental conditions.

Main Results:

Time-based forgetting was observed consistently, even with familiar verbal memory items.
The findings indicate that trace decay is persistent and not solely dependent on item familiarity or brief presentation.
Results challenge the notion that familiar items are immune to decay.

Conclusions:

Time-based forgetting in working memory is a robust phenomenon.
Familiarity and presentation duration do not prevent trace decay.
Existing models of trace decay may need revision to account for these persistent findings.