Value-based attentional capture affects multi-alternative decision making.

Area of Science:

• Cognitive Neuroscience
• Behavioral Economics
• Decision Science

Background:

• Individuals often deviate from rational economic principles during multi-alternative choice scenarios.
• The impact of introducing a third option on decision accuracy remains controversial, with conflicting findings in existing literature.

Purpose of the Study:

• To investigate the replicability and reproducibility of a reported positive effect of a third option on decision accuracy.
• To elucidate the neurocognitive mechanisms underlying choice under conditions of multiple alternatives.

Main Methods:

• Conducted four experiments involving 147 human participants.
• Utilized behavioral measures and eye-tracking data.
• Performed a reanalysis of previously published data.

Main Results:

• The previously reported positive effect of a third option on decision accuracy was found to be neither replicable nor reproducible.
• Behavioral and eye-tracking data suggest that the third option's value captures attention, thereby impairing decision accuracy.
• A computational model was developed to explain the interaction between value, attention, and choice.

Conclusions:

• The presence of a third option can negatively impact decision accuracy by diverting attentional resources.
• The proposed computational model provides a framework for understanding how choice environments influence decision-making processes.
• Findings challenge previous assumptions and offer new insights into the neurocognitive basis of multi-alternative decision making.