Prior commitment: Its effect on suboptimal choice in a gambling-like task.

Area of Science:

• Behavioral science
• Animal cognition
• Decision-making

Background:

• Animals often exhibit suboptimal choice behavior when presented with signals indicating potential reinforcement.
• Pigeons, for instance, do not consistently prefer guaranteed reinforcement over probabilistic outcomes with uncertainty.

Purpose of the Study:

• To investigate whether delaying the outcome of a choice influences the optimality of decision-making in pigeons.
• To test the hypothesis that delayed reinforcement signals lead to less suboptimal choices.

Main Methods:

• Pigeons were presented with choices between different reinforcement schedules.
• A fixed-interval 20-s schedule was implemented to delay the presentation of reinforcement signals post-choice.
• Two experiments varied the probabilities of reinforcement signals and the delay duration.

Main Results:

• When reinforcement signals were delayed, pigeons predominantly made optimal choices.
• Without delay, pigeons frequently selected suboptimal options, particularly in Experiment 1.
• In Experiment 2, delayed signals significantly reduced suboptimal choices compared to immediate signals.

Conclusions:

• The delay in receiving reinforcement signals significantly improves the optimality of choice behavior in pigeons.
• Temporal factors, specifically delays, play a crucial role in mitigating suboptimal decision-making in animal choice tasks.
• Findings suggest that temporal discounting or information processing under delayed feedback influences strategic selection.