The effectiveness of an adapted Nuffield Early Language Intervention programme in Paraguayan school children

The effectiveness of an adapted Nuffield Early Language Intervention programme in promoting Paraguayan children's oral language

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN13436925

Enrollment

100000

Registered

2025-05-19

Start date

2025-05-19

Completion date

Unknown

Last updated

2025-09-08

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

Conditions

Children with language difficulties Mental and Behavioural Disorders

Interventions

Schools have been recruited from all across Paraguay. All children in all participating classrooms will undergo language assessments at pretest. Randomisation: From a population of 1,281 schools, we

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Children must be in Jardin or Pre-school class 2. Children must be aged 4 to 7 years at pretest

Exclusion criteria

Exclusion criteria: Does not meet the inclusion criteria

Design outcomes

Primary

Measure	Time frame
A latent language variable created from the four LanguageScreen subtests (Receptive Vocabulary, Expressive Vocabulary, Listening Comprehension and Sentence Repetition) measured at pretest (baseline) in May 2025 and at posttest (on completion of the 20-week intervention in October to November 2025)	—

Secondary

Measure	Time frame
There are no secondary outcome measures	—

Countries

Paraguay

Contacts

Public ContactMariela Rios Diaz

mariela@oxedandassessment.com-

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026