Saving for the future self: neural measures of future self-continuity predict temporal discounting

Area of Science:

• Neuroeconomics
• Cognitive Neuroscience
• Behavioral Economics

Background:

• Despite increased human lifespan, saving rates have not risen, suggesting a disconnect between present and future financial planning.
• Temporal discounting, the tendency to devalue future rewards compared to immediate ones, is a key factor influencing financial decisions.
• The future self-continuity hypothesis posits that individuals perceive their future selves as distinct, hindering long-term planning and saving.

Purpose of the Study:

• To investigate the neural underpinnings of the future self-continuity hypothesis using neuroimaging.
• To examine individual differences in brain activation related to present versus future self-perception.
• To determine if these neural differences correlate with behavioral measures of temporal discounting and saving behavior.

Main Methods:

• Event-related functional magnetic resonance imaging (fMRI) was employed to measure brain activity.
• Participants rated their current and future selves, while brain responses in the rostral anterior cingulate (rACC) were recorded.
• Behavioral assessments of temporal discounting were conducted one week post-scanning to correlate with neural findings.

Main Results:

• Significant individual differences in rostral anterior cingulate (rACC) activation were observed when participants evaluated their present versus future selves.
• The magnitude of differential rACC activation predicted the degree of temporal discounting, as measured behaviorally.
• These findings provide neural evidence supporting the future self-continuity hypothesis.

Conclusions:

• Neural activity in the rACC differentiates between the present and future self, supporting the future self-continuity hypothesis.
• Individual variations in this neural distinction are linked to a greater tendency for temporal discounting.
• Understanding these neural mechanisms has significant implications for developing interventions to promote future-oriented financial behaviors, such as saving.