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Effortful Processing Reduces the Attraction Effect in Multi-Alternative Decision Making: An Electrophysiological

Takashi Tsuzuki1, Yuji Takeda2, Itsuki Chiba2

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Cognitive resource allocation impacts decision-making. More resources allocated to evaluating options disrupt the attraction effect, suggesting intuitive processing (System 1) drives this choice phenomenon.

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Area of Science:

  • Cognitive psychology
  • Neuroscience
  • Behavioral economics

Background:

  • The attraction effect, a context-dependent violation of rational choice axioms, is thought to stem from intuitive (System 1) rather than elaborative (System 2) processing.
  • Understanding the role of cognitive resources in this effect is crucial for decision-making research.

Purpose of the Study:

  • To investigate the relationship between cognitive resource allocation and the attraction effect.
  • To determine if cognitive load influences the occurrence of the attraction effect.

Main Methods:

  • Utilized a task-irrelevant auditory probe technique during a multi-alternative decision-making task.
  • Measured electroencephalographic (EEG) responses to auditory probes to assess cognitive resource allocation.
  • Analyzed event-related potentials (ERPs), specifically N1 amplitudes, in relation to choice behavior.

Main Results:

  • Significantly smaller N1 amplitudes were observed in response to auditory probes during trials where the attraction effect did not occur (competitor choice) compared to trials where it may have occurred (target choice).
  • This difference was noted in the second epoch of trials, potentially corresponding to the evaluation and comparison stages of decision-making.
  • The findings suggest that increased cognitive resource allocation to alternatives hinders the attraction effect.

Conclusions:

  • The attraction effect appears to be disrupted when more cognitive resources are dedicated to evaluating choice alternatives.
  • This supports the hypothesis that intuitive comparisons, driven by System 1 processing, are essential for the manifestation of the attraction effect.
  • The study provides neurophysiological evidence linking cognitive resource availability to context-dependent decision-making biases.