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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Social exclusion | Experimental | 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). |
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| Social inclusion | Active Comparator | 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). |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Cyberball experimental task | Other | Cyberball is an experimental task in which participants have to pass a ball to two virtual players during 60 passes in total |
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| 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 |
| 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 |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Faculty of Psycholoy. Jaume I University | Castellon | Spain |
Only the main PI will have access to the data.
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| Type | Date | Date Unknown |
|---|---|---|
| Release | Oct 5, 2020 | |
| Reset | Oct 27, 2020 | |
| Release | May 5, 2021 | |
| Reset | May 27, 2021 | |
| Release | Aug 31, 2021 | |
| Reset | Sep 27, 2021 |
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| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Oct 5, 2020 | Oct 27, 2020 | |||
| May 5, 2021 |
The two conditions, based on the experimental task called Cyberball, will be: social inclusion and social exclusion.
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Only participants will be masked to the assigned condition. The researcher has to be aware of the assigned condition to prepare the experimental task accordingly.
| 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) |
| May 27, 2021 |
| Aug 31, 2021 | Sep 27, 2021 |