ClinicalTrials.gg
Enrolling by invitationNCT07426276DLD25!!Updated Feb 23, 2026

Evaluating the Effect of Combined Parent Training Plus Speech Therapy on Children With Speech Development Disorder.

An interventional study of Assisted speech therapy intervention + parent training and standard speech therapy in Developmental Language Disorder (DLD), sponsored by IRCCS Centro Neurolesi Bonino Pulejo. Enrolling by invitation at 1 site in Italy. Open to participants aged 3 Years to 5 Years. Per ClinicalTrials.gov, last updated 2026-02-23.

Sponsored by IRCCS Centro Neurolesi Bonino Pulejo · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jun 2026, 4 months ago, but the record still lists the study as enrolling by invitation.
  • Registered 1 year 1 month after the study started (first participant enrolled Jan 2025, registered Feb 2026).
Phase
Not applicable
Study type
Interventional
Enrollment
100
Allocation
Randomized
Ages
3 Years to 5 Years
Sex
All
01

Study summary

Language is an extremely complex cognitive function that, in situations of typical development, i.e. in the absence of deficits or environmental risk, is generally acquired with apparent ease and naturalness (Kuhl, 2010).

The first 1,000 days of life are considered a key time window in which children's developmental trajectories and future outcomes are shaped. During this period, it is crucial to provide children with nurturing experiences such as responsive care and appropriate learning opportunities (Britto et al., 2017).

Most children learn communication skills (e.g., pointing, gesturing) and language skills (e.g., saying words, following instructions) from high-quality interactions with parents and caregivers. However, some children may have language learning difficulties for a variety of reasons, including genetic, neurological and environmental.

Not all children necessarily follow the stages outlined: some present delayed language development. The early identification and diagnosis of the language disorder is therefore very important as this deficit can have a negative impact on the child's subsequent development of skills, the way he/she relates and subsequent acquisition skills in primary school.

This research aims to assess whether parents, guided and monitored by the speech therapist and psychologist through parental training, can try out specific and effective strategies that enable them to become a facilitating model for the child's communicative-linguistic learning, thereby also improving their quality of life.

02

Conditions studied

  • Developmental Language Disorder (DLD)
03

In context

Language Development Disorders

121 studies on the registry are indexed under Language Development Disorders; 49 are open to participants now.

This study's planned enrollment of 100 is above the median of 74 across 106 interventional studies indexed under Language Development Disorders.

Browse Language Development Disorders studies →

Lead sponsor

IRCCS Centro Neurolesi Bonino Pulejo is the lead sponsor of 67 studies on the registry; 31 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
3 Years to 5 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Diagnosis of 'Developmental Language Disorders' (DLD)
  • Age between 3 and 5 years.
  • Signature of by parents and/or legal guardians.

Exclusion criteria

Exclusion Criteria:

  • No sensory impairment or another medical or neurological condition (ADHD, Autism, Deafness, Mental Retardation \<70);
  • Significant medical conditions that could interfere with participation in the study.
  • Failure to sign by parents and/or legal guardians.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
100 participants (estimated)

Study arms

  • Experimental
    Assisted speech therapy intervention + parent training

    The treatment group consists of 20 children diagnosed with DLD (Language Development Disorder). The participants were randomly assigned and will undergo a structured rehabilitation programme of parent training + speech therapy

    Behavioral: Assisted speech therapy intervention + parent training

  • Active comparator
    Standard Speech Therapy

    The control group consisted of 20 children diagnosed with DLD (Language Development Disorder). Participants were randomly assigned and were subjected to standard therapy approaches, which included traditional speech therapy provided by qualified therapists.

    Behavioral: standard speech therapy

Interventions

  • BehavioralAssisted speech therapy intervention + parent training

    The intervention was tailored to individual needs and aimed at improving verbal expression, communicative initiative, and social engagement. Each child receives therapy for a period of 16 weeks, for a total of 32 sessions, twice a week, with each session lasting 45 minutes and in addition 16 sessions of parent traning once a week for 45 minutes.Intervention sessions included tasks designed to engage the child in verbal and social interactions, (such as naming objects, answering questions and performing gestures) to improve verbal expression communicative intention and social engagement, in parallel the parents once a week participate in a parent training session with the aim of supporting and directing them to learn strategies to improve interaction with the child and facilitate communicative-linguistic development

  • Behavioralstandard speech therapy

    Therapy followed established protocols and was adapted to meet the specific needs of the children. Each child received therapy for a period of 16 weeks (twice a week), for a total of 32 sessions.• Standard therapeutic approaches included exercises to improve verbal communication and social engagement, such as object naming, sentence construction and comprehension tasks. Therapists adapted the intervention to the individual communication goals of each 45-minute session.

06

What researchers measure

Primary outcomes

  1. Language Development Level Test (TVL)

    The Test of Verbalization and Language Development is a standardized tool designed to assess various aspects of language development, including verbal production, comprehension, sentence construction, phonological accuracy, and morphosyntactic abilities. The weighted score ranges from 0 to 10, with higher scores indicating better language development.

    Time frame: T0 (baseline)- T1 (6months)

  2. The Child Behavior Checklist (CBCL)

    The Child Behavior Checklist (CBCL) is a caregiver-reported questionnaire used to identify emotional and behavioral problems in children. It measures multiple domains, including emotional reactivity, anxiety, attention problems, and social difficulties. The T-scores do not have a specific range, but values between 50 and 70 are considered within the normal range, while 70 to 100 indicates clinical significance. Higher scores indicate greater behavioral problems.

    Time frame: T0(baseline)-T1(6months)

  3. Questionnaire on Parenting Styles (QSP)

    This instrument consists of different forms that consider the three fundamental domains of parent-child interaction: a) the social domain: assessed through 8 items; b) the educational domain: assessed through 7 items; c) the disciplinary domain: assessed through 2 items. In this study, each parent completed four forms of the questionnaire: one assessing what their parental behaviour is like in reality (real style; Form A), one assessing what they would ideally like their own behaviour to be like (ideal style; Form B), one assessing what their partner's parental behaviour is like in reality (real style; Form C) and one assessing what they would ideally like their partner's parental behaviour to be like (ideal style; Form D).

    Time frame: T0(baseline)-T1(6 months)

  4. WHOQOL

    It assesses individuals' perceptions of their position in life in the context of the culture and value systems in which they live and in relation to their goals, expectations, norms and standards. The WHOQOL-BRIEF is a 26-item self-report instrument that assesses four domains that are assumed to represent the Quality of Life (QOL) construct: the physical domain, the psychological domain, the social relations domain and the environmental domain, plus two aspects for assessing overall QOL and general health. It provides a multi-dimensional profile of QOL domain and sub-domain scores

    Time frame: T0(baseline)-T1(6 months)

  5. Il Parenting Stress Index

    It defines the level of stress (anxiety, discomfort, maladaptive coping, etc.) that a parent is experiencing in their parental role. It is closely linked to personal characteristics of the subject that reverberate in the way he or she performs and experiences this role. The stress components most associated with this subscale are: a negative experience regarding one's parental competence; stress resulting from the restrictions the parental role places on other social roles important to the subject; conflict with the spouse; lack of social support; and the presence of depression in the clinical sense.

    Time frame: T0(baseline)-T1(6 months)

07

Study locations

1 site
08

References and documents

Publications

  • Zwitserlood-Nijenhuis MA, Wiefferink CH, Gerrits E. A randomized study of parent- versus child-directed intervention for Dutch toddlers with DLD. Int J Lang Commun Disord. 2023 Sep-Oct;58(5):1768-1782. doi: 10.1111/1460-6984.12901. Epub 2023 May 29. PubMed 37248804 ↗
  • Hawa VV, Spanoudis G. Toddlers with delayed expressive language: an overview of the characteristics, risk factors and language outcomes. Res Dev Disabil. 2014 Feb;35(2):400-7. doi: 10.1016/j.ridd.2013.10.027. Epub 2013 Dec 14. PubMed 24334229 ↗
  • Collisson BA, Graham SA, Preston JL, Rose MS, McDonald S, Tough S. Risk and Protective Factors for Late Talking: An Epidemiologic Investigation. J Pediatr. 2016 May;172:168-174.e1. doi: 10.1016/j.jpeds.2016.02.020. Epub 2016 Mar 8. PubMed 26968834 ↗
  • Rowe ML. A longitudinal investigation of the role of quantity and quality of child-directed speech in vocabulary development. Child Dev. 2012 Sep-Oct;83(5):1762-74. doi: 10.1111/j.1467-8624.2012.01805.x. Epub 2012 Jun 20. PubMed 22716950 ↗
  • Buschmann A, Jooss B, Rupp A, Dockter S, Blaschtikowitz H, Heggen I, Pietz J. Children with developmental language delay at 24 months of age: results of a diagnostic work-up. Dev Med Child Neurol. 2008 Mar;50(3):223-9. doi: 10.1111/j.1469-8749.2008.02034.x. Epub 2008 Feb 11. PubMed 18266869 ↗
  • Britto PR, Lye SJ, Proulx K, Yousafzai AK, Matthews SG, Vaivada T, Perez-Escamilla R, Rao N, Ip P, Fernald LCH, MacMillan H, Hanson M, Wachs TD, Yao H, Yoshikawa H, Cerezo A, Leckman JF, Bhutta ZA; Early Childhood Development Interventions Review Group, for the Lancet Early Childhood Development Series Steering Committee. Nurturing care: promoting early childhood development. Lancet. 2017 Jan 7;389(10064):91-102. doi: 10.1016/S0140-6736(16)31390-3. Epub 2016 Oct 4. PubMed 27717615 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jan 2025 (actual). Primary completion is estimated for Jun 2026, 17 months after the start.

Of 72 non-industry interventional studies with no phase under Language Development Disorders, half reached primary completion within 30 months of starting (the median), counting those still running; a quarter within 19 and three quarters within 57. This study's planned 17 months is below that.

Counting every sponsor, half of 72 studies reached it within 30 months; a quarter within 19 and three quarters within 57.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 16, 2026
First posted
Feb 23, 2026
StartActual
Jan 10, 2025
Primary completionEst.
Jun 25, 2026
CompletionEst.
Jul 25, 2026
Last update
Feb 23, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 23, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07426276
Lead sponsor
IRCCS Centro Neurolesi Bonino Pulejo
Responsible party
Sponsor
First posted
Feb 23, 2026
Start date
Jan 10, 2025
Primary completion
Jun 25, 2026 (estimated)
Completion
Jul 25, 2026 (estimated)
Last update
Feb 23, 2026

Study contacts

Cucinotta Francesca, CF
principal investigator · IRCCS Centro Neurolesi Bonino Pulejo

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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