Training letter-speech sound associations to improve reading fluency in children with dyslexia

A randomised controlled trial of a computerised intervention addressing letter-speech sound integration in order to improve reading fluency in children with severe dyslexia

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN12783279

Enrollment

Registered

2015-02-26

Start date

2011-10-01

Completion date

Unknown

Last updated

2023-03-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Topic: Mental Health

Interventions

A single-centre trial of a cognitive intervention compared to wait-list control. The intervention in this study is a computerised intervention addressing the integration of letters and

same age-range, school grade, sociodemographical background, and exclusion criteria as the children with dyslexia) is included in the study, in order to compare the reading growth curves of the childr

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Diagnosis of dyslexia (according to criteria of Dutch Dyslexia Foundation, and DSM-IV-TR / reading disorder) 2. Suffering from specific and persistent (i.e., failed to respond to remedial support at school) problems with reading acquisition at school 3. Percentile score of 10 or lower on a standard reading test 4. Aged 8 to 9 years old 5. In grade 3 of primary education

Exclusion criteria

Exclusion criteria: 1. Behavioral and/or attention disorders (as measured by the Child Behavior Checklist (CBCL) 2. IQ < 85 3. Uncorrected sight problems 4. Hearing loss

Design outcomes

Primary

Measure	Time frame
1. Reading Accuracy (3DM, Blomert & Vaessen, 2009) 2. Reading Fluency (3DM, Blomert & Vaessen, 2009) Primary measures are measured at baseline and at the end of the intervention (after 19 weeks).	—

Secondary

Measure	Time frame
1. Letter-speech sound identification - Accuracy (3DM, Blomert & Vaessen, 2009) 2. Letter-speech sound identification - Fluency (3DM, Blomert & Vaessen, 2009) 3. Letter-speech sound discrimination - Accuracy (3DM, Blomert & Vaessen, 2009) 4. Letter-speech sound discrimination - Fluency (3DM, Blomert & Vaessen, 2009) 5. Spelling - Accuracy (3DM, Blomert & Vaessen, 2009) 6. Spelling - Fluency (3DM, Blomert & Vaessen, 2009) 7. Word reading fluency (EMT, Brus & Voeten, 1999) 8. Text reading fluency (SVT-TL, De Vos, 2007) 9. ERP (Event-Related Potential), audiovisual MMN of letter-speech sound pairs 10. ERP, visual word recognition Secondary measures number 1 to 8 are measured at baseline and at the end of the intervention (after 19 weeks). The two ERP-measures (number 9 and 10) are measured at baseline and at the end of the intervention (after 19 weeks) for the intervention group, and only once, at approximately 10 weeks, for both the waiting-list control group and the normal-reader control group (used as a criterion point to compare the pre-post ERP-changes in the intervention with).	—

Measure

Time frame

1. Letter-speech sound identification - Accuracy (3DM, Blomert & Vaessen, 2009) 2. Letter-speech sound identification - Fluency (3DM, Blomert & Vaessen, 2009) 3. Letter-speech sound discrimination - Accuracy (3DM, Blomert & Vaessen, 2009) 4. Letter-speech sound discrimination - Fluency (3DM, Blomert & Vaessen, 2009) 5. Spelling - Accuracy (3DM, Blomert & Vaessen, 2009) 6. Spelling - Fluency (3DM, Blomert & Vaessen, 2009) 7. Word reading fluency (EMT, Brus & Voeten, 1999) 8. Text reading fluency (SVT-TL, De Vos, 2007) 9. ERP (Event-Related Potential), audiovisual MMN of letter-speech sound pairs 10. ERP, visual word recognition Secondary measures number 1 to 8 are measured at baseline and at the end of the intervention (after 19 weeks). The two ERP-measures (number 9 and 10) are measured at baseline and at the end of the intervention (after 19 weeks) for the intervention group, and only once, at approximately 10 weeks, for both the waiting-list control group and the normal-reader control group (used as a criterion point to compare the pre-post ERP-changes in the intervention with).

—

Countries

Netherlands

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 14, 2026