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Updated: Jul 13, 2026

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
Published on: March 1, 2022
Representation over time: the effects of temporal distance on similarity
Samuel B Day1, Daniel M Bartels
1Department of Psychology, Northwestern University, 2029 Sheridan Road, Evanston, IL 60208, USA. s-day2@northwestern.edu
Subjective similarity perception shifts with time. Some events feel more similar closer to the present, while others become more similar further away, impacting cognitive processes.
Area of Science:
- Cognitive Psychology
- Decision Making
- Human Cognition
Background:
- Similarity is a fundamental cognitive process.
- Inter-temporal thought, or thinking about the future and past, is ubiquitous.
- Understanding how temporal distance affects similarity is crucial for cognitive science.
Purpose of the Study:
- To investigate the dynamic relationship between subjective similarity and temporal distance.
- To determine if temporal distance influences the perception of similarity between events.
- To explore the implications of these findings for general cognitive processes.
Main Methods:
- Conducted three empirical studies.
- Manipulated temporal distance to future events.
- Assessed participants' subjective similarity ratings for various event types.
Main Results:
- Demonstrated that subjective similarity is not static.
- Found that some events increase in similarity as they approach the present.
- Observed that other events increase in similarity as they recede into the future.
Conclusions:
- Subjective similarity is malleable and influenced by temporal perspective.
- These findings highlight the complex interplay between time perception and similarity judgments.
- The results have broad implications for understanding decision-making and memory in human cognition.
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