Social Decision-making (SOCIAL-DECISION)

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.

Conditions

• Healthy

Interventions

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.

OTHER

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.

OTHER

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.

OTHER

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.

Sponsors & Collaborators

• Hospices Civils de Lyon

  lead OTHER

Principal Investigators

• Caroline DEMILY, MD · CH le Vinatier

Study Design

Allocation

NA

Purpose

BASIC_SCIENCE

Masking

NONE

Model

SINGLE_GROUP

Eligibility

Min Age

20 Years

Max Age

30 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2015-01-31

Primary Completion

2016-07-18

Completion

2016-07-18

Countries

• France

Study Locations