In Simple Words
Learning health facts is like saving a document on a hard drive—once stored, the information stays intact. Changing personal attitudes is more like setting a temperature dial in a cold room—over time, without ongoing heat, the mindset gradually drifts back toward the surrounding room temperature.
Ninth-grade pupils in Colombian public schools
- Usual sexual education
- Group used for comparison
- Online Profamilia course
- Attitudes 0.17 standard deviations higher
Six-month standardized attitude index. The one-week estimate was larger; this alone does not establish a statistically tested decay rate.
See source →Research question
While factual health knowledge acquired during digital courses remains stable long after graduation, behavioral attitudes and beliefs tend to erode over time due to persistent external social pressures.
Participants
N = 3,906 human ninth-grade public school students surveyed across 21 Colombian cities.
Study Design
Longitudinal cluster RCT measuring standardized general attitude indices at 1 week post-intervention and 6 months post-intervention.
Results
Standardized attitude improvements decreased from 0.24 SD at 1 week post-course to 0.17 SD at 6 months post-course (p < 0.01), contrasting with factual knowledge gains which remained flat (0.37 SD to 0.38 SD).
Takeaway
Implement periodic booster activities or peer discussions following main educational courses to sustain attitudinal shifts against post-intervention erosion.
Source and citation
See source →Read alongside the research
Plain-English glossary
Original explanations, informed by the references below. Examples are illustrations, not data from the studies above. The research text stays unchanged.
- Longitudinal study
A study that checks the same group of people at different times. This lets researchers examine how things change over time.
ExampleResearchers ask the same workers about their wellbeing at the start, after three months and after six months.
NICE · Longitudinal study ↗Read more about longitudinal study →- Randomized controlled trial
A study that uses chance, like drawing lots, to decide who receives each option being compared. Researchers compare the groups’ outcomes to estimate the effect of those options.
ExampleA lottery assigns volunteers to a training programme or a comparison group. Researchers then compare their outcomes.
GET-IT glossary · Randomized study ↗Read more about randomized controlled trial →