Autoshaping, random control, and omission training in the rat

Area of Science:

• Behavioral Neuroscience
• Animal Behavior

Background:

• The stimulus-reinforcer contingency is crucial for understanding learned behaviors.
• Autoshaping and omission training are key paradigms for studying this relationship.

Purpose of the Study:

• To investigate the role of stimulus-reinforcer contingency in lever contact responding in rats.
• To examine how prior training procedures influence subsequent learning.

Main Methods:

• Hooded rats were trained using autoshaping, omission training, or a random-control procedure.
• Subsequent training conditions involved switching procedures or extinction.
• Lever contact responding was the primary measure of behavior.

Main Results:

• Autoshaping led to more consistent lever contact than omission or random-control procedures.
• Prior omission training retarded acquisition in autoshaping, while prior random-control training accelerated it.
• Subsequent exposure to omission, random-control, or extinction after autoshaping showed no significant differences in response decrement.

Conclusions:

• Prior experience critically influences the interpretation of omission training effects.
• The impact of stimulus-reinforcer relations in autoshaping may be limited by previous exposure to different contingencies.