NCT06261307

Brief Summary

Investigators compare effects of 6-month music versus circus group interventions on language development in infants and toddlers with or without familial risk for dyslexia (anticipated total N=200). Effects of intervention timing, dyslexia risk and genetics, and social-emotional factors on the intervention outcomes are investigated.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
200

participants targeted

Target at P75+ for not_applicable

Timeline
11mo left

Started Mar 2024

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress71%
Mar 2024Apr 2027

First Submitted

Initial submission to the registry

January 17, 2024

Completed
29 days until next milestone

First Posted

Study publicly available on registry

February 15, 2024

Completed
25 days until next milestone

Study Start

First participant enrolled

March 11, 2024

Completed
2.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 27, 2026

Completed
11 months until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2027

Expected
Last Updated

May 4, 2026

Status Verified

April 1, 2026

Enrollment Period

2.1 years

First QC Date

January 17, 2024

Last Update Submit

April 28, 2026

Conditions

Keywords

Event-related potentialsMusic interventionBrain developmentSpeech processing

Outcome Measures

Primary Outcomes (8)

  • Infant-Toddler Checklist (ITC)

    Total and sub-scale scores in the parental standardized questionnaire on prelinguistic skills: Infant-Toddler Checklist (ITC) in the Communication and Symbolic Behavior Scales Developmental Profile (Wetherby and Prizant, 2002; in Finnish: Laakso et al., 2011). Range of scores is 0-57 for the Total score, 0-26 for the Social subscale, 0-14 for the Speech subscale, and 0-17 for the Symbolic subscale, higher scores reflecting better prelinguistic skills.

    At baseline and at 6 months (post intervention)

  • MacArthur-Bates Communicative Development Inventory (MCDI) 8-16mo

    Size of receptive and expressive vocabulary (amount of words out of a total of 380 words for each), and total score in the "gestures" scale (0-66, higher score reflecting better skills) in a parental standardized questionnaire on early language skills: the MacArthur-Bates Communicative Development Inventory (MCDI; Fenson et al., 1991; in Finnish: Lyytinen, 1999)

    At baseline and at 6 months (post intervention)

  • Mismatch response (MMR) speech, amplitude

    Amplitude (in microvolts) of mismatch responses to speech sound deviants in an oddball paradigm recorded with electroencephalogram (EEG) from a fronto-central region-of-interest

    At baseline and at 6 months (post intervention)

  • Mismatch response (MMR) speech, latency

    Peak latency (in milliseconds) of mismatch responses to speech sound deviants in an oddball paradigm recorded with electroencephalogram (EEG) from a fronto-central region-of-interest

    At baseline and at 6 months (post intervention)

  • Mismatch response (MMR) speech, laterality

    Hemispheric lateralization (indicated with a laterality index, where range is from -1 to +1 with more positive values indicating a more left-lateralized response) of mismatch responses to speech sound deviants in an oddball paradigm recorded with electroencephalogram (EEG) from a fronto-central region-of-interest at left and right hemisphere

    At baseline and at 6 months (post intervention)

  • Obligatory event-related potential (ERP) speech, amplitude

    Amplitude (in microvolts) of obligatory event-related potentials (ERPs) to repeating speech sounds in an oddball paradigm recorded with electroencephalogram (EEG) from a fronto-central region-of-interest

    At baseline and at 6 months (post intervention)

  • Obligatory event-related potential (ERP) speech, latency

    Peak latency (in milliseconds) of obligatory event-related potentials (ERPs) to repeating speech sounds in an oddball paradigm recorded with electroencephalogram (EEG) from a fronto-central region-of-interest

    At baseline and at 6 months (post intervention)

  • Obligatory event-related potential (ERP) speech, laterality

    Hemispheric lateralization (indicated with a laterality index, where range is from -1 to +1 with more positive values indicating a more left-lateralized response) of obligatory event-related potentials (ERPs) to repeating speech sounds in an oddball paradigm recorded with electroencephalogram (EEG) from a fronto-central region-of-interest at left and right hemisphere

    At baseline and at 6 months (post intervention)

Secondary Outcomes (13)

  • Infant-Toddler Checklist (ITC) follow-up

    At 1-year follow-up (1.5 years from baseline)

  • MacArthur-Bates Communicative Development Inventory (MCDI) 16-30mo follow-up

    At 1-year follow-up (1.5 years from baseline)

  • Mismatch response (MMR) speech, amplitude follow-up

    At 1-year follow-up (1.5 years from baseline)

  • Mismatch response (MMR) speech, latency follow-up

    At 1-year follow-up (1.5 years from baseline)

  • Mismatch response (MMR) speech, laterality follow-up

    At 1-year follow-up (1.5 years from baseline)

  • +8 more secondary outcomes

Other Outcomes (16)

  • Parental dyslexia status (dyslexia - no dyslexia)

    At enrollment to the study (before the children are accepted to the study and randomized)

  • Allele groupings for dyslexia susceptibility genes

    At baseline

  • Gross and fine motor development

    At baseline, 6 months (post-intervention), and 1-year follow-up (1.5 years from baseline)

  • +13 more other outcomes

Study Arms (2)

Music intervention

EXPERIMENTAL

Groups: Children with (risk group, appr. 50%) or without (control group, appr. 50%) familial risk for dyslexia. In each arm, the children will follow the same training protocol consisting of weekly 0.5-1-hour training sessions for six months. Training sessions are organized at fixed times and locations in fixed groups of 5-10 parent-child dyads and an experienced instructor. The music intervention consists of social, structured and playful group sessions that involve joint singing, playing with musical instruments, moving to and listening to music. Based on the results of a previous intervention study by the investigators on the benefits of vocal music exposure on speech processing (Virtala et al., 2023), joint singing will be emphasized in the music intervention. The aims of the music intervention are to support caregiver-child interaction and the development of musical abilities.

Behavioral: Music intervention

Circus intervention

ACTIVE COMPARATOR

Groups: Children with (risk group, appr. 50%) or without (control group, appr. 50%) familial risk for dyslexia. In each arm, the children will follow the same training protocol consisting of weekly 0.5-1-hour training sessions for six months. Training sessions are organized at fixed times and locations in fixed groups of 5-10 parent-child dyads and an experienced instructor. The circus intervention consists of social, structured and playful group sessions that involve acrobatics and other age-appropriate motor exercises with the caregiver, and familiarizing with the art and equipment of circus and acrobatics. The aims of the circus intervention are to support caregiver-child interaction and the development of motor skills.

Behavioral: Circus intervention

Interventions

Group intervention focusing on musical activities

Music intervention

Group intervention focusing on acrobatics and circus activities

Circus intervention

Eligibility Criteria

Age8 Months - 12 Months
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17)

You may qualify if:

  • months old at start of intervention (recruited between 0-11 months)
  • Born healthy and at term (gestational age at least 37 weeks and birth weight at least 2500 g)
  • Normal hearing at birth (evoked oto-acoustic emissions conducted to newborns routinely at the hospital)
  • At least one caregiver living with the child is native speaker of Finnish and speaks Finnish to the child
  • Risk group: At least one biological parent has developmental dyslexia according to a recent (\<5 years) diagnostic statement by a health care professional or according to a dyslexia test at study enrollment; symptoms have started in childhood

You may not qualify if:

  • Medication affecting the central nervous system
  • Sensory deficits
  • Serious health conditions
  • No-risk group: Suspected dyslexia or developmental language disorder due to symptoms that have started in childhood in either of the biological parents; diagnosis of a developmental or language disorder (incl. dyslexia, developmental language disorder, attention-deficit/hyperactivity disorder ADHD, attention-deficit disorder ADD) or neurological disorder in either of the biological parents
  • Risk group: Diagnosis of ADHD, ADD, or other not-language-related developmental disorder in either of the biological parents; in the dyslexic parent, brain trauma in childhood that may indicate a non-heritable cause for the reading deficit or individualized school curriculum that may indicate broader developmental deficits.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Helsinki

Helsinki, 00014, Finland

Location

Related Publications (3)

  • Paula V, Vesa P, Anastasia G, Anja T, Laurel J T, Teija K. Beneficial effects of a music listening intervention on neural speech processing in 0-28-month-old children at risk for dyslexia. Dev Sci. 2023 Sep;26(5):e13426. doi: 10.1111/desc.13426. Epub 2023 Jun 23.

    PMID: 37350469BACKGROUND
  • Kujala T, Sihvonen AJ, Thiede A, Palo-Oja P, Virtala P, Numminen J, Laasonen M. Voxel and surface based whole brain analysis shows reading skill associated grey matter abnormalities in dyslexia. Sci Rep. 2021 May 25;11(1):10862. doi: 10.1038/s41598-021-89317-x.

    PMID: 34035329BACKGROUND
  • Virtala P, Aquilino B, Nie P, Navarrete-Arroyo S, Stolt S, Leutonen K, Lauronen M, Kujala T. Language development deficits and early interactive music intervention (BusyBaby): protocol description of a double-blind randomized controlled trial on the effectiveness of music on language development in infancy. Front Psychol. 2026 Jan 5;16:1699558. doi: 10.3389/fpsyg.2025.1699558. eCollection 2025.

MeSH Terms

Conditions

DyslexiaLanguage Development Disorders

Condition Hierarchy (Ancestors)

Language DisordersCommunication DisordersNeurobehavioral ManifestationsNeurologic ManifestationsNervous System DiseasesSpecific Learning DisorderLearning DisabilitiesSigns and SymptomsPathological Conditions, Signs and SymptomsNeurodevelopmental DisordersMental Disorders

Study Officials

  • Paula Virtala, PhD

    University of Helsinki

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Masking Details
A dedicated member of the research team will be in charge of randomization of the participants to the two intervention arms, to ensure blindness of other team members. This member will not act as an outcomes assessor or a care provider. The study will be presented to the caregivers as evaluating the effect of hobbies on language development. Therefore, the caregivers should not consider either intervention as the control arm. Both arms are expected to be potentially beneficial for the children's development. Outcomes assessors will be unaware of the intervention arm and risk status (dyslexia risk vs no risk) of the children; caregivers will be reminded not to mention these to the researcher. Person in charge of randomization keeps track of violations of outcome assessor blindness.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: The experimental arm will receive music training and the control arm will receive circus training.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
University researcher

Study Record Dates

First Submitted

January 17, 2024

First Posted

February 15, 2024

Study Start

March 11, 2024

Primary Completion

April 27, 2026

Study Completion (Estimated)

April 1, 2027

Last Updated

May 4, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will not share

Locations