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| Name | Class |
|---|---|
| Stanford University | OTHER |
| Heidelberg University | OTHER |
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This study will evaluate the effect of a short, animated storytelling intervention video on positive psychological capital intervention on immediate and medium-term psychological capital and related constructs, gratitude and happiness. We will also measure voluntary engagement with the content of the short, animated storytelling intervention video on positive psychological capital.
In this 4-armed, parallel, randomized controlled trial, 10,000 adult, US participants will be randomly assigned to (1) a short, animated storytelling intervention video on positive psychological capital followed by the psychological capital , gratitude and happiness surveys (2) the surveys only, (3) an attention placebo control video followed by the before mentioned surveys, and (4) an arm that is exposed to neither the video nor the surveys. Two weeks later, participants in all four arms will complete all of the surveys.
The primary outcome is psychological capital (immediate and medium-term). Secondary outcomes are gratitude and happiness (immediate and medium-term) as well as voluntary engagement with the short, animated storytelling video content.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Intervention Arm | Experimental | At Time 1, the Intervention Arm will view a short, animated storytelling video designed to promote psychological capital and, immediately thereafter, complete the CPC-12R, the GQ-6 as well as a single-item validated happiness scale. Two weeks later, the participants will complete the CPC-12R, the GQ-6 and the single-item validated happiness scale. |
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| Scale-Exposed Control Arm | No Intervention | The Scale-Exposed Control Arm will watch no video content at Time 1, but will complete the CPC-12R, the GQ-6 as well as a single-item validated happiness scale. Two weeks later, the participants will complete the CPC-12R, the GQ-6 and the single-item validated happiness scale. | |
| Attention Placebo Control Arm | Placebo Comparator | The Attention Placebo Control Arm will view an attention placebo control video, unrelated to the outcomes measured in this trial, before completing the CPC-12R, the GQ-6 and the single-item validated happiness scale. Two weeks later, the participants will complete the CPC-12R, the GQ-6 and the single-item validated happiness scale. |
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| Un-exposed Control Arm | No Intervention | The Un-exposed Control Arm will neither watch video content, nor complete the CPC-12R, the GQ-6 and the single-item validated happiness scale at Time 1. Two weeks later, the participants will complete the CPC-12R, the GQ-6 and the single-item validated happiness scale. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| short, animated storytelling video (intervention video) | Other | Participants in the Intervention Arm will view a short, animated storytelling video designed to promote psychological capital. |
| Measure | Description | Time Frame |
|---|---|---|
| Immediate effect of the short, animated storytelling intervention video on positive psychological capital | The immediate effect of the short, animated storytelling intervention video on positive psychological capital, as measured by the CPC-12R, the GQ-6 and the single-item validated happiness scale. | immediately after watching the video |
| Measure | Description | Time Frame |
|---|---|---|
| Medium-term effect of the short, animated storytelling intervention video on psychological capital | The medium-term effect of the short, animated storytelling intervention video on psychological capital after two weeks. | 2 weeks |
| Immediate effect of the short, animated storytellingintervention video on gratitude and happiness |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Maya Adam, MD | Contact | +1 650 839 3600 | madam@stanford.edu | |
| Alexander Supady, MD, MPH | Contact | +4976127073790 | alexander.supady@uniklinik-freiburg.de |
| Name | Affiliation | Role |
|---|---|---|
| Till Bärnighausen, Prof. Dr. | Heidelberg University | Principal Investigator |
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| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 41254108 | Derived | Adam M, Rohr J, Greuel M, Nguyen K, Aziz MAE, Gates J, Uberreiter C, Supady A, Barnighausen T. Measuring the effect of short, animated storytelling videos to boost psychological capital in US adults: a randomized controlled trial. Sci Rep. 2025 Nov 18;15(1):40326. doi: 10.1038/s41598-025-26894-1. |
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Currently not planned. Individual requests may be directed to the corresponding author.
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This is a 4-armed, parallel, randomized controlled trial, conducted purely online
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All study investigators and researchers involved in the data analyses will remain blinded to the trial arm allocation for the entire study duration. Unblinding will not be required.
| short, animated storytelling attention placebo video | Other | The Attention Placebo Control Arm will view an attention placebo control video, unrelated to the outcomes measured in this trial. |
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The effect of the short, animated storytellingintervention video on gratitude and happiness, both related to the construct of positive psychological capital |
| immediately after watching the video |
| Medium-term effect of exposure to psychological capital and related psychological scales on these same outcomes | The effect of exposure to psychological capital and related psychological scales on these same outcomes, measured two weeks later | 2 weeks |