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Related Experiment Video

Updated: Aug 2, 2025

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

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Externalizing forgetting: Delay testing in a long operant chamber.

Catarina Soares¹, Ana Sousa¹, Carlos Pinto¹

¹School of Psychology, University of Minho.

Journal of Experimental Psychology. Animal Learning and Cognition

|April 20, 2023

Summary

This summary is machine-generated.

Pigeons in a symbolic matching-to-sample task showed decreased accuracy with increased delay, shifting focus from sample stimuli to choice location. This indicates delay disrupts stimulus control in operant conditioning.

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Testing for Metacognitive Responding Using an Odor-based Delayed Match-to-Sample Test in Rats

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Published on: June 18, 2018

Area of Science:

Cognitive Psychology
Animal Behavior
Operant Conditioning

Background:

Symbolic matching-to-sample tasks are crucial for understanding memory and choice behavior.
Investigating the impact of temporal delays on stimulus control is essential for cognitive models.

Purpose of the Study:

To assess the effect of delayed sample presentation on pigeon choice behavior.
To compare pigeon preferences and movement patterns in delayed versus no-sample trials.
To analyze how spatial location interacts with temporal delays in operant conditioning.

Main Methods:

Pigeons were trained on a symbolic matching-to-sample task with varying sample durations (4-s vs. 12-s).
Delay and no-sample test trials were introduced, with varied spatial locations for trials and comparisons.
Analysis included pigeons' choice preferences and detailed movement patterns within the operant chamber.

Main Results:

Pigeons initially moved to the correct comparison location, but accuracy decreased with increasing delay.
During delay testing, pigeons moved to the chamber's middle, irrespective of trial or comparison location.
No-sample delayed testing revealed a preference for the short-sample comparison, coupled with movement to the middle.

Conclusions:

Introducing a delay disrupts stimulus control by the sample, shifting control to the choice location.
Spatial location becomes a dominant factor when temporal information is degraded by delay.
Movement patterns reflect adaptive strategies influenced by delay and outcome certainty in pigeons.