Why what we teach depends on when: grade and reading intervention modality moderate effect size

Area of Science:

• Educational Psychology
• Developmental Psychology
• Applied Linguistics

Background:

• Reading acquisition is complex, influenced by background knowledge, language skills, and age.
• Identifying optimal reading intervention strategies for at-risk students remains a challenge.
• Previous research has not fully explored developmental factors and intervention types as moderators of reading intervention effectiveness.

Purpose of the Study:

• To investigate how student development (grade level) and intervention modality moderate the effectiveness of reading interventions for disadvantaged readers.
• To analyze the impact of various study characteristics on intervention effect sizes.

Main Methods:

• A meta-analysis of 85 experimental or quasi-experimental studies involving 7,522 students from preschool to Grade 7.
• Statistical analyses included hierarchical regression, controlling for intervention length, instructor ratio, measure design, and publication bias.

Main Results:

• Intervention effect sizes were larger for older students, comprehension-focused interventions, and students at greater risk.
• Intervention modality became significant when interacting with grade level.
• Phonics interventions showed higher effectiveness up to Grade 1, with comprehension and mixed interventions proving more effective thereafter.

Conclusions:

• A developmental perspective is crucial for effective reading remediation.
• Intervention strategies should be tailored to the student's developmental stage.
• The findings emphasize adapting reading interventions based on age and specific skill needs.