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"Why do the Recommendations Keep Changing?" A Randomized Controlled Trial of a Scrollytelling Web Application to Help Members of the Public Understand Better How and Why Public Health Guidelines Change Over Time

NCT07091591 · Status: ACTIVE_NOT_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 525

Last updated 2025-09-09

No results posted yet for this study

Summary

This study will be an online 3-arm randomized controlled trial. Here intervention group 1 will receive the intervention in the form of an animated cartoon "scrollytelling" outlining the various changes and reasons for changes in public health guidelines in the context of nutrition (e.g. recommendations on fat intake). Intervention group 2 will have a scrollytelling on the reasons why public health recommendations always change in the context of infectious disease control (e.g. during the COVID-19 pandemic). And finally, the control group will receive no intervention.

Conditions

  • Social Perception
  • Psychology

Interventions

BEHAVIORAL

Changing (version: pandemic)

The application explains that, faced with a complex situation such as a pandemic, decision-makers have to navigate through uncertainty, often without knowing exactly how the situation will evolve. Scientific research guides their choices, but early studies can sometimes prove inaccurate and require adjustments. For example, during the COVID-19 pandemic, some initial studies showed that certain drugs could help, but more rigorous research showed that they were not effective. Over time, accumulated knowledge enables us to better understand the situation and make informed decisions. Lessons learned from past crises help to better prepare for future complex situations.

BEHAVIORAL

Changing (version: nutrition)

The intervention discusses the evolving nature of scientific research on diet and health. It explains how initial studies can suggest one thing, only for later studies to offer new insights or clarify previous findings. For example, while early research linked high fat intake with heart disease, more recent studies have shown that some fats, like those in nuts, avocados, and oily fish, are actually beneficial. It emphasizes that science often advances gradually, and rigorous, long-term studies help understanding. It also points out that health recommendations are influenced by multiple factors, and over time, accumulated knowledge enables us to better understand the situation and make informed decisions.

Sponsors & Collaborators

  • Laval University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
HEALTH_SERVICES_RESEARCH
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-07-24
Primary Completion
2025-08-14
Completion
2025-09-30

Countries

  • Canada

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07091591 on ClinicalTrials.gov