Word Learning From Parentese in Autistic Children

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-04

Study Completion Date

2028-03-01

Brief Summary

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The overall objective of this research is to determine whether parentese delivered in the video format (Aim 1) and in live interaction (Aim 2) facilitates novel word learning in autistic children and to investigate if there are factors that influence the effect of parentese on word learning (Aim 3).

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Detailed Description

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Caregivers frequently use parentese, also known as infant-directed speech (IDS), when speaking to young children. Compared to adult registered speech, parentese is typically characterized by greater pitch variation, longer duration, and louder volume. Parentese facilitates early language development in typically developing (TD) children. However, it remains unknown whether the facilitative effect of parentese on language learning can be generalized to clinical populations such as autistic children given that core autism features (e.g., sensory and social communication differences) may interact with how they process and learn from parentese. Most autistic children do not reach age-appropriate language ability even if they receive timely early intervention. Determining if autistic children can learn language from parentese, a common way language input is provided to young children, is a critical first step toward understanding whether language input needs to be adjusted to optimize their language development.

The overall objective of this research is to determine whether parentese facilitates novel word learning in autistic children and to investigate if the effect of parentese is conditional upon input factors (recorded parentese vs live parentese presented in social interaction) and child factors (extreme responses to auditory input, social motivation). In Aim 1, the investigators will use a video-based word learning paradigm to determine the effect of recorded parentese on novel word learning in autistic children compared to language-matched TD peers. Aim 2 focuses on the effect of live parentese on novel word learning: an experimenter will teach children two novel words, presented in live parentese or live parentese, during social interaction. Aim 3 will examine whether child factors (extreme responses to auditory input, social motivation) explain variability in word learning accuracy from recorded parentese and live parentese in the autistic group. Children's extreme responses to auditory input (including hyper- and hypo-responsiveness) and social motivation will be measured using caregiver questionnaires and will be used to predict word learning accuracy from recorded parentese (Aim 1) and live parentese (Aim 2) in the autistic group.

Conditions

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Autism Autism Spectrum Disorder Neurodevelopmental Disorders

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Investigators

Study Groups

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Parentese

All participants will learn novel words in two conditions (parentese vs adult register) in each of the experiment (video and live word learning). In the Parentese condition, participants will listen to sentences that contain novel words in parentese.

Group Type EXPERIMENTAL

Parentese Speech

Intervention Type BEHAVIORAL

Novel words are introduced in parentese, a type of speech that is typically characterized by greater pitch variation, longer duration, and louder volume

Adult Register

All participants will learn novel words in two conditions (parentese vs adult register) in each of the experiment (video and live word learning). In the Adult Register condition, participants will listen to sentences that contain novel words in adult register speech.

Group Type ACTIVE_COMPARATOR

Adult Registered Speech

Intervention Type BEHAVIORAL

Novel words are introduced in standard adult register.

Interventions

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Parentese Speech

Novel words are introduced in parentese, a type of speech that is typically characterized by greater pitch variation, longer duration, and louder volume

Intervention Type BEHAVIORAL

Adult Registered Speech

Novel words are introduced in standard adult register.

Intervention Type BEHAVIORAL

Other Intervention Names

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Infant-Directed Speech Adult-Directed Speech

Eligibility Criteria

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Inclusion Criteria

* children with or without a diagnosis of ASD between 18 and 59 months

Exclusion Criteria

* hears another language more than 10% of time based on parent report
* has uncorrected visual impairment or hearing impairment
* has developmental disorders or medical conditions other than ASD that affect language or cognition (excepting psychiatric conditions often comorbid with ASD such as ADHD)

Minimum Eligible Age

18 Months

Maximum Eligible Age

59 Months

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes