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Efficacy of a prewriting intervention: A pilot randomised control trial
Berenice Johnston1, Brooke Ryan1, Megan Hatfield1
1School of Allied Health, Curtin University, Perth, Western Australia, Australia.
Australian Occupational Therapy Journal
|August 12, 2025
Summary
This pilot study found that while children improved prewriting skills, the Peggy Lego intervention
Area of Science:
- Pediatric occupational therapy
- Early childhood education
- Handwriting development
Background:
- Successful handwriting relies on accurate letter formation, which depends on prewriting patterns and sub-stroke skills.
- Existing prewriting intervention programs lack established efficacy, and children's perceptions of these programs are understudied.
- This study addresses the need for effective prewriting interventions and understanding user experience.
Purpose of the Study:
- To determine the efficacy of the Peggy Lego prewriting intervention program.
- To assess the feasibility and acceptability of the intervention in a kindergarten setting.
- To explore children's perceptions of engaging in a prewriting program.
Main Methods:
- A pilot randomized controlled trial involving 18 typically developing 4- to 5-year-old children.
- Participants were allocated to either an intervention (Peggy Lego) or waitlist control group.
- Data collected using the Developmental Test of Visual Perception and the Prewriting Assessment (PWA); intervention fidelity and acceptability were also measured.
Main Results:
- A statistically significant improvement in Prewriting Assessment (PWA) scores was observed over time (p=0.003).
- The intervention demonstrated high fidelity and feasibility, with most participants completing sessions and finding it acceptable.
- Group effects and time-group interactions were non-significant, suggesting improvement may not be solely intervention-driven.
Conclusions:
- All children showed improved prewriting abilities, though the specific contribution of the intervention requires further investigation.
- The pilot study confirms feasibility in terms of recruitment, retention, and data collection.
- Further research is warranted to establish the efficacy of the Peggy Lego intervention for handwriting development.
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