'Irrational' stated preferences: a quantitative and qualitative investigation

Area of Science:

• Behavioral Economics
• Decision Science
• Economic Psychology

Background:

• Normative economic theories define rational consumer behavior, but empirical evidence frequently shows deviations from these principles.
• Systematic violations challenge the adequacy of classic economic models for approximating real-world decision-making.
• This study addresses the ongoing debate on individual rationality in economics.

Purpose of the Study:

• To empirically test rational choice properties using a stated preference choice experiment.
• To investigate the influence of experimental design complexity and subject characteristics on rationality test outcomes.
• To provide insights for improving the design and analysis of discrete choice experiments (DCEs).

Main Methods:

• A stated preference choice experiment was designed to evaluate rational choice axioms.
• Quantitative and qualitative research methods were employed for data collection and analysis.
• Rationality tests were administered, with attention to task complexity and participant demographics.

Main Results:

• The majority of respondents successfully passed the rationality tests.
• Performance on rationality tests was significantly influenced by normatively irrelevant factors, including task complexity and demographic variables.
• A notable portion of participants who initially 'failed' tests appeared to have mentally reframed the experimental task.

Conclusions:

• While most individuals demonstrate rationality, its assessment is sensitive to experimental design and individual characteristics.
• The findings suggest that discrete choice experiments (DCEs) require careful design to accurately capture rational decision-making.
• Future DCE research should consider participant cognitive processes and potential task reformulation.