Mechanisms of Nudges on Families' Decision-Making Process

Study Overview
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Brief Summary
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As part of a larger study, participants are told to read 1 out of 4 anecdotes depicting an organ donation scenario where they are required to make a decision on behalf of their mother who has just suffered an accident. The participants are then surveyed on their attitudes towards organ donation.

Detailed Description
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As part of a larger study, participants are given 1 out of 4 possible vignettes which depicts an organ donation scenario involving their mother. The possible vignettes consist of a Control condition, a Framing condition, a Normative condition and a condition that includes all the nudges. Participants are then given surveys to gauge their views and attitudes towards organ donation as a whole, their trust towards medical institutions and the doctors, their perceived manipulation from the doctor and their views on the altruistic nature of organ donation.

Official Title
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Mechanisms of Nudges on Families' Decision-Making Process

Conditions
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Organ Donation

Intervention / Treatment
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* Other: Frame
* Other: Norms


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Above age 21 Singapore Citizens and Permanent Residents Exclusion Criteria: Below age 21 Non-citizens Not able to make decisions for self

Ages Eligible for Study
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Minimum Age: 21 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Health Services Research
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Participants are assigned to 1 out of 4 possible anecdotes; Control, Framing, Norms, Combination.
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: Control<br>Vignette contains no extra information. | |
| Experimental: Frame<br>Vignette is framed in a particular manner | Other: Frame<br>* Vignette is framed in a way that nudges participant to leave a legacy<br>|
| Experimental: Norms<br>Vignette contains extra information about norms | Other: Norms<br>* Vignette informs the participant that most people choose an option to try to nudge participant into choosing that option as well<br>|
| Experimental: All<br>Vignette contains extra information about norms and is framed in a particular manner. | Other: Frame<br>* Vignette is framed in a way that nudges participant to leave a legacy<br>Other: Norms<br>* Vignette informs the participant that most people choose an option to try to nudge participant into choosing that option as well<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 5-point Likert scale - Trust and Perceived Manipulativeness of doctor and medical institution | A 5-point Likert scale will be given and participants will be asked to rate their agreeableness towards the level of trust and perceived manipulativeness of the doctor and the medical institution. | 3 minutes | 
| 9-point rating scale - Views on altruistic nature of organ donation | A 9-point rating scale will be given and participants will be asked to rate their views on the meaningfulness of organ donation. | 1 minute |