Related Experiment Videos
Effects of response-produced stimuli upon conditional discrimination performance.
Journal of the Experimental Analysis of Behavior
|March 1, 1974
Summary
Pigeons showed better matching accuracy with external stimuli than with internal stimuli. Combining both external and internal stimuli further improved accuracy, and sample-specific rules aided learning in new tasks.
Area of Science:
- Behavioral science
- Animal cognition
- Comparative psychology
Background:
- Matching theory describes choice behavior when options are repeatedly available.
- Stimulus control in matching-to-sample procedures is influenced by the nature of the sample stimuli.
Purpose of the Study:
- To investigate how different types of stimuli (exteroceptive, response-produced, or compound) affect matching accuracy in pigeons.
- To examine the role of sample-specific rules in facilitating task acquisition during a transfer procedure.
Main Methods:
- Three groups of pigeons were trained on a zero-delay matching-to-sample task.
- Different sample stimuli were presented: exteroceptive (visual), response-produced (related to fixed ratios), or compound.
- A transfer procedure was used, replacing initial samples with new ones, with or without sample-specific fixed-ratio rules.
Main Results:
- Exteroceptive stimuli produced higher matching accuracy than response-produced stimuli.
- Compound stimuli (exteroceptive + response-produced) resulted in greater accuracy than exteroceptive stimuli alone.
- The presence of sample-specific fixed-ratio rules significantly facilitated the acquisition of the new task during the transfer phase.
Conclusions:
- The type of sample stimulus significantly impacts matching accuracy in pigeons.
- Combining different stimulus modalities enhances performance.
- Explicit rules tied to specific stimuli are effective in promoting rapid learning and adaptation to new tasks.