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Related Experiment Video

Updated: Jul 14, 2026

The Double-H Maze: A Robust Behavioral Test for Learning and Memory in Rodents

The Double-H Maze: A Robust Behavioral Test for Learning and Memory in Rodents

Published on: July 8, 2015

Memory search instead of template matching? Representation-guided inference in same-different performance.

Thomas Lachmann¹, Hans-Georg Geissler

¹Department of Psychology, University of Leipzig, Germany. lachmann@rz.uni-leipzig.de

Acta Psychologica

|November 9, 2002

Summary

Reaction times in a pattern recognition task depend on the size of mental rotation equivalence sets. This suggests memory search within sets, not direct comparison, influences decision-making.

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Area of Science:

Cognitive Psychology
Human Perception
Visual Processing

Background:

Understanding how humans process and categorize visual information is crucial.
Previous research highlights the role of mental rotation in pattern recognition.

Purpose of the Study:

To investigate the influence of equivalence set size on same-different judgments and reaction times.
To explore the underlying cognitive mechanisms, specifically memory search versus direct comparison.

Main Methods:

Two experiments were conducted using transformationally related patterns with varying equivalence set sizes.
Participants performed a same-different judgment task, followed by a goodness rating task in the second experiment.

Main Results:

Reaction times were significantly affected by the size of the equivalence set, even for physically identical patterns.
Goodness ratings in Experiment 2 indicated a secondary component of information processing.

Conclusions:

Human pattern recognition relies on memory search within activated equivalence sets rather than direct perceptual comparison.
The size of these sets influences processing efficiency and decision-making in visual tasks.