Trait Injustice, Social Exclusion, and Anger

Trait Injustice and Its Effects on Anger Induced by Social Exclusion

Participants will be randomly allocated to one of two experimental conditions: social exclusion or social inclusion. Participants, but not experimenters will be blind to the assignment. Pre- and post-tests will be administered. Participants will be offered 7 euros in compensation for participating.

Study Overview

• Status: Completed
• Conditions: General Population
• Intervention / Treatment: Other: Cyberball experimental task

• Study Type: Interventional
• Enrollment (Actual): 131
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Spain
  • Castellón De La Plana, Spain
    • Faculty of Psycholoy. Jaume I University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 30 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Being over 18 years of age
• Signs the informed consent
• Can read and understand Spanish

Exclusion Criteria:

• Being younger than 18 years of age
• Does not sign the informed consent
• Cannot read or understand Spanish

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Social exclusion; Cyberball is a ball-passing task in which the participant plays with two virtual players. In this condition, the user receives fewer passes than the other two participants (i.e., 10 out of 60).	Other: Cyberball experimental task; Cyberball is an experimental task in which participants have to pass a ball to two virtual players during 60 passes in total
Active Comparator: Social inclusion; Cyberball is a ball-passing task in which the participant plays with two virtual players. In this condition, the user receives a comparable number of passes than the other two participants (i.e., 20 out of 60).	Other: Cyberball experimental task; Cyberball is an experimental task in which participants have to pass a ball to two virtual players during 60 passes in total

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in Anger State from baseline to end of the experiment	The STAXI-2 includes a measure of anger state (15 items) with responses ranging from 1="Absolutely not" to 3="A lot"	The STAXI-2 will be administered twice: at Baseline and at the same day of Baseline assessment just after the experimental task (end of study)
Trait Injustice	The Trait Injustice Experiences Questionnaire is a measure of perceived trait injustice beliefs that has 12 items, with responses ranging from 0="never" to 4="always". This measure will be used as moderator of the effects of the experiment on anger	This measure will be administered at Baseline

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Frustration Discomfort Scale	This is a measure of frustration intolerance. The scale has 28 items that are gouped in 4 subscales. Items have a 1-to-5 response scale ranging from "nothing" to "a lot". In addition to trait injustice, this measure will also be used in secondary analyses as a moderator of the effects of the experiment on anger	This measure will be administered at Baseline
Change in State Injustice from baseline to end of the experiment	The State Injustice Experiences Questionnaire is a measure of perceived state injustice beliefs that has 12 items, with responses ranging from 0="never" to 4="always". This measure will be used as an experimental check (whether exclusion in the experiment effectively increased the sense of injustice in the short term)	This measure will be administered twice: at Baseline and at the same day of Baseline assessment just after the experimental task (end of study)
Change in State Anxiety from baseline to end of the experiment	The STAI-S is a measure of perceived state anxiety that has 20 items, with responses ranging from 0="not at all" to 3="a lot". This measure will be used as an experimental check (whether exclusion in the experiment effectively increased anxiety in the short term)	This measure will be administered twice: at Baseline and at the same day of Baseline assessment just after the experimental task (end of study)
Cyberball Experiences post-experimental check Questionnaire	In addition to exploring the effects of the experimental task on anxiety and anger, the Cyberball includes a measure of impact of the task on perceived inclusion and related concepts (isolation, belonging, perceived number of passes received, etc.). This will also be used as an experimental check	This measure will be administered at the same day of Baseline assessment just after the experimental task (end of study)

Collaborators and Investigators

• Sponsor: Universitat Jaume I

Study record dates

Study Major Dates

• Study Start (Actual): January 5, 2020
• Primary Completion (Actual): February 8, 2020
• Study Completion (Actual): February 15, 2020

Study Registration Dates

• First Submitted: January 20, 2020
• First Submitted That Met QC Criteria: February 26, 2020
• First Posted (Actual): February 28, 2020

Study Record Updates

• Last Update Posted (Actual): June 19, 2020
• Last Update Submitted That Met QC Criteria: June 17, 2020
• Last Verified: June 1, 2020

More Information

Terms related to this study

• Other Study ID Numbers: InjusticeUJI

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No
• IPD Plan Description: Only the main PI will have access to the data.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No