Altruistic and self-serving goals modulate behavioral and neural responses in deception

Area of Science:

• Neuroscience
• Cognitive Psychology
• Behavioral Economics

Background:

• Deception serves various goals, including altruism and self-interest.
• Understanding the neural basis of deception modulated by different motivations is limited.

Purpose of the Study:

• Investigate neural processes and behaviors in spontaneous deception under altruistic, self-serving, and mixed goals.
• Examine how different motivations influence moral conflict and decision-making during lies.

Main Methods:

• Utilized electroencephalography (EEG) to measure neural responses (N2-P3 effect) during deception tasks.
• Compared behavioral and neural data across conditions with varying donation goals (charity, self, or split).

Main Results:

• Purely altruistic deception showed reduced moral conflict and mental cost (smaller N2-P3 effect).
• Self-interest was a stronger motivator than altruism; participants lied more for self than for charity.
• In mutually beneficial situations, participants lied more readily, primarily for self-interest, even with high detection risk.

Conclusions:

• Altruistic motivations can mitigate the neural correlates of moral conflict during deception.
• Self-interest significantly influences deceptive behaviors, often overriding altruistic considerations.
• Findings illuminate the neural underpinnings of 'good lies' and decision-making in situations with shared benefits.