Social Decision-making (SOCIAL-DECISION)

Healthy Clinical Trial

Official title:

Brain Mechanism of Social Decision-making

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT03095794
• Other study ID #: 69HCL16_0679
• Status: Terminated
• Phase: N/A
• First received: March 24, 2017
• Last updated: November 24, 2017
• Start date: January 31, 2015
• Est. completion date: July 18, 2016

Study information

• Verified date: November 2017
• Source: Hospices Civils de Lyon
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 145
• Est. completion date: July 18, 2016
• Est. primary completion date: July 18, 2016
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 20 Years to 30 Years

Eligibility

Inclusion Criteria:

• healthy human adult

• normal vision

Exclusion Criteria:

• depression

• potential addiction to alcohol/ nicotine

Related Conditions & MeSH terms

• Healthy

Intervention

Other:
• How people learn another's value preference during decision under risk
The aim of this study is to investigate how an agent learns another's value preference when they should make decisions on behalf of another. This experiment consists of 3 parts(i) measuring individual's loss aversion; (ii) feedback based learning of another's value preference; (iii) and decisions on behalf of others.
• Neural mechanism of making a group decision under risk that influences on in-group members
how individuals evaluate the risk and the outcome when they should make a single agreement decision in a group that will influence every member's payoff regardless of individuals' decisions. For the first part of the experiment, we will measure the individual level of loss aversion which will be used as the parameter for controlling individual differences.
• Neural mechanism of making a group decision that influences on out-group members
Human is decimated with other species by delegation of one responsibility. Although the person who has no-interests with the outcome of decision, they should make a delegated decision. Therefore, this decision has influences on others who are not part of the group. The third party punishment (Juries decision making) is one example of the decision made by a group influencing the out group members.
• fMRI
For neuroimaging passes, the expected duration of each of the experimental protocols is about 1h30 for tasks 1 and 2 and about 2h for task 3. The maximum period foreseen for neuroimaging tests is 3 years and will start as soon as possible. Completion of the behavioral tests.

Locations

Country	Name	City	State
France	CH le Vinatier	Bron

Sponsors (1)

Lead Sponsor	Collaborator
Hospices Civils de Lyon

Country where clinical trial is conducted

France, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Brain activation associated with decision-making (fMRI, non-invasive measure)	1 hour in a fMRI scanner	Day 1