Choice overload interferes with early processing and necessitates late compensation: Evidence from...

Area of Science:

• Cognitive Neuroscience
• Decision Science
• Neuroeconomics

Background:

• Abundant choices can paradoxically impair decision-making.
• Understanding the neural basis of choice overload is crucial for consumer behavior and psychology.

Purpose of the Study:

• To investigate the neural mechanisms of choice overload using electroencephalogram (EEG).
• To examine how the number of options affects visual processing, attention, and emotional arousal during decision-making.

Main Methods:

• Combined electroencephalogram (EEG) recordings with self-reported data.
• Analyzed behavioral responses (evaluations, choice avoidance) and event-related potentials (ERPs).
• Utilized multivariate pattern analysis (MVPA) to identify temporal dynamics of neural processing.

Main Results:

• Behavioral data showed negative evaluations and choice avoidance with more options, even without time pressure.
• EEG results indicated interference with early visual processing (reduced P1 amplitude) and initial attention (reduced P2, N2 amplitudes).
• Increased late positive component (LPC) amplitude suggested heightened attention and emotional arousal in later processing stages, with distinct early and late activation patterns identified by MVPA.

Conclusions:

• Both behavioral and EEG findings confirm the choice overload effect.
• Excessive options disrupt early cognitive processing, necessitating prolonged engagement and potentially leading to subjective exaggeration of the overload.
• The study elucidates the neural underpinnings of how choice quantity impacts decision-making efficiency and subjective experience.