Social Decision-making (SOCIAL-DECISION)

Not Applicable

Terminated

• Conditions: Healthy
• Interventions: Other: How people learn another's value preference during decision under risk; Other: Neural mechanism of making a group decision under risk that influences on in-group members; Other: Neural mechanism of making a group decision that influences on out-group members; Other: fMRI

• Registration Number: NCT03095794
• Lead Sponsor: Hospices Civils de Lyon

Brief Summary

The purpose of this study is to investigate neural mechanism of healthy humans underlying group decision making and compare it with that of individual decision-making. Using functional neuroimaging technology combining with computational modeling, we examine how the human brain process social information to make a decision within a group, which often guides humans to make a better decision using collective wisdom.

Detailed Description

Not available

Study Timeline

• Study Start: 2015-01-31
• Primary Completion: 2016-07-18
• Study Completion: 2016-07-18
• Study First Submitted: 2017-03-24
• Study First Submitted QC: 2017-03-24
• Study First Posted: 2017-03-30
• Status Verified: 2017-11
• Last Update Submitted: 2017-11-24
• Last Update Posted: 2017-11-28

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 145

Inclusion Criteria

• healthy human adult
• normal vision

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Exclusion Criteria

• depression
• potential addiction to alcohol/ nicotine

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
neural mechanisms of decision making	How people learn another's value preference during decision under risk	Previous studies on how brain manages a value-based decision have been bounded to individual decisions. The current study will extend the understanding of social dimensions by answering four questions.
neural mechanisms of decision making	Neural mechanism of making a group decision under risk that influences on in-group members	Previous studies on how brain manages a value-based decision have been bounded to individual decisions. The current study will extend the understanding of social dimensions by answering four questions.
neural mechanisms of decision making	fMRI	Previous studies on how brain manages a value-based decision have been bounded to individual decisions. The current study will extend the understanding of social dimensions by answering four questions.
neural mechanisms of decision making	Neural mechanism of making a group decision that influences on out-group members	Previous studies on how brain manages a value-based decision have been bounded to individual decisions. The current study will extend the understanding of social dimensions by answering four questions.

Primary Outcome Measures

Name	Time	Method
Brain activation associated with decision-making (fMRI, non-invasive measure)	Day 1	1 hour in a fMRI scanner

Trial Locations

Locations (1)

CH le Vinatier; 🇫🇷 Bron, France