Evaluating the Research on the Instruction of Literacy with Language (RILL) intervention programme children learning through the medium of Welsh

Evaluating the Research on the Instruction of Literacy with Language (RILL) intervention programme for children with reading difficulties, aged 8 - 10 years old, compared with age-matched, wait-list control children, learning through the medium of Welsh, on reading and language measures

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN10963572

Enrollment

320

Registered

2022-09-27

Start date

2022-09-01

Completion date

Unknown

Last updated

2026-06-01

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

Conditions

Children with reading difficulties (e.g., developmental dyslexia) Mental and Behavioural Disorders Specific reading disorder

Interventions

For the intervention arm, children will receive the RILL intervention programme twice a week for 15 weeks. Each lesson is administered by a trained teaching assistant and lasts for up to 45 minutes pe

Eligibility

Sex/Gender

All

Age

8 Years to 10 Years

Inclusion criteria

Inclusion criteria: 1. Children aged 8 - 10 years old 2. Undertaking Welsh-language instruction at school 3. Normal or corrected-to-normal vision and hearing 4. Identified as having literacy difficulties via a reading screener

Exclusion criteria

Exclusion criteria: Children not in a mainstream school setting

Design outcomes

Primary

Measure	Time frame
Current primary outcome measure as of 30/01/2024: Reading measured using the Test of Word Reading Efficiency (TOWRE) at baseline (pretest), post test (15 weeks) and follow up (30 weeks) Previous primary outcome measure: Reading measured using the Test of Word Reading Efficiency (TOWRE) at baseline (pretest) and post test (15 weeks)	—

Secondary

Measure	Time frame
Current secondary outcome measures as of 30/01/2024: 1. Welsh word reading measured using an adapted version of the TOWRE at pre-, post-test and follow up 2. Pseudo word reading fluency measured using an adapted version of the TOWRE at pre-, post-test and follow up 3. Phoneme awareness measured using MABEL phoneme deletion in English and Welsh at pre-, post-test and follow up 4. Vocabulary measured using a criterion reference test at pre-, post-test and follow up 5. Rapid naming measured using the MABEL test battery at pre-, post-test and follow up Previous secondary outcome measures: 1. Welsh word reading measured using an adapted version of the TOWRE at pre and post test 2. Pseudo word reading fluency measured using an adapted version of the TOWRE at pre and post test 3. Phoneme awareness measured using MABEL phoneme deletion in English and Welsh at pre and post test 4. Vocabulary measured using a criterion reference test at pre and post test 5. Rapid naming measured using the MABEL test battery at pre and post test	—

Measure

Time frame

Current secondary outcome measures as of 30/01/2024: 1. Welsh word reading measured using an adapted version of the TOWRE at pre-, post-test and follow up 2. Pseudo word reading fluency measured using an adapted version of the TOWRE at pre-, post-test and follow up 3. Phoneme awareness measured using MABEL phoneme deletion in English and Welsh at pre-, post-test and follow up 4. Vocabulary measured using a criterion reference test at pre-, post-test and follow up 5. Rapid naming measured using the MABEL test battery at pre-, post-test and follow up Previous secondary outcome measures: 1. Welsh word reading measured using an adapted version of the TOWRE at pre and post test 2. Pseudo word reading fluency measured using an adapted version of the TOWRE at pre and post test 3. Phoneme awareness measured using MABEL phoneme deletion in English and Welsh at pre and post test 4. Vocabulary measured using a criterion reference test at pre and post test 5. Rapid naming measured using the MABEL test battery at pre and post test

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Countries

United Kingdom, Wales

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jun 11, 2026