Conditional discrimination performance by pigeons on a response-independent procedure

Area of Science:

• Behavioral psychology
• Animal cognition

Background:

• Differential autoshaping is a procedure used to train animals.
• Conditional discrimination involves learning to respond differently to stimuli based on learned associations.

Purpose of the Study:

• To investigate the nature of controlling stimuli in conditional discrimination tasks in pigeons.
• To examine the persistence of conditional control under extinction and delayed stimulus presentation.

Main Methods:

• Pigeons were trained using differential autoshaping with two-stimulus sequences predicting food or no food.
• Extinction procedures and titration procedures with imposed delay intervals were used to test stimulus control.

Main Results:

• All pigeons successfully acquired the conditional discrimination.
• Stimuli maintained conditional control during extinction as long as responding continued.
• Conditional control was maintained up to 7-10 second delay intervals between stimulus components.

Conclusions:

• The findings support the theory that controlling stimuli in conditional discrimination are compounds of multiple stimulus elements.
• Pigeon behavior in this task demonstrates robust conditional control that is resistant to extinction and temporal delays.