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Combining Transcranial Magnetic Stimulation and fMRI to Examine the Default Mode Network

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Nudge for Good? Choice Defaults and Spillover Effects.

Claus Ghesla¹, Manuel Grieder¹, Jan Schmitz¹

¹Department of Humanities, Social and Political Sciences, Chair of Economics, Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland.

Frontiers in Psychology

|February 28, 2019

Summary

Choice defaults effectively encourage pro-social behavior without negative spillover effects. This study confirms that defaults do not adversely impact subsequent related decisions, regardless of strength.

Keywords:

consistency defaults licensing nudge spillovers

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Area of Science:

Behavioral Economics
Social Psychology

Background:

Policymakers utilize choice defaults to steer socially relevant decisions toward beneficial outcomes, such as increasing pro-environmental or pro-social actions.
While defaults are effective in isolation, their impact on subsequent behaviors (spillover effects) remains under-researched.

Purpose of the Study:

To investigate potential adverse behavioral spillover effects following pro-social behavior induced by choice defaults.
To determine if default nudges have unintended negative consequences on later, related choices.

Main Methods:

A laboratory experiment was designed to observe participants' subsequent behaviors after exposure to pro-social choice defaults.
The study examined behavioral consequences across both weak and strong default conditions.

Main Results:

Pro-social behavior prompted by choice defaults did not lead to negative spillover effects on subsequent behaviors.
This finding was consistent across both weak and strong default interventions.

Conclusions:

Choice defaults are a reliable tool for promoting pro-social behavior without triggering detrimental behavioral shifts.
The use of default nudges for social good appears safe concerning subsequent behavioral patterns.