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Related Experiment Video

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A Semantic Priming Event-related Potential (ERP) Task to Study Lexico-semantic and Visuo-semantic Processing in Autism Spectrum Disorder

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Development and Validation of Modified Basic English Lexicon Sentences for Use With a Pediatric Population.

Lauren Calandruccio¹, Emily Buss², Lori J Leibold³

¹Department of Psychological Sciences, Case Western Reserve University, Cleveland, OH.

American Journal of Audiology

|June 25, 2026

Summary

The BabyBEL corpus offers a new speech recognition resource for children aged 5 and up, based on the Basic English Lexicon. Performance patterns were similar across lists for both children and adults.

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Area of Science:

Speech-language pathology
Auditory perception research
Child language acquisition

Background:

Development of age-appropriate speech stimuli is crucial for pediatric audiology and speech research.
Existing sentence corpora may not fully capture the vocabulary and sentence complexity relevant to young children.
The Basic English Lexicon (BEL) provides a foundation for controlled vocabulary research.

Purpose of the Study:

Introduce the BabyBEL corpus, a novel sentence resource for children aged 5 years and older.
Evaluate the psychometric properties and speech recognition performance of the BabyBEL corpus in children and adults.
Provide a freely available resource for researchers studying speech perception in children.

Main Methods:

Constructed 20 lists of 20 sentences each using vocabulary from native English-speaking children's expressive lexicons.
Recorded sentences with a female talker and created speech-shaped masking noise.
Assessed list psychometric properties in adults across varying signal-to-noise ratios (SNRs).
Evaluated speech recognition in noise for 5- to 7-year-old children at -2 dB SNR.

Main Results:

Speech recognition thresholds in adults showed minimal variation across 17 of 20 lists (±0.5 dB).
Children's performance (percent correct) varied by no more than 3 percentage points for 12 of 20 lists.
Consistent performance patterns were observed between adult and child listener groups across the lists.

Conclusions:

The BabyBEL corpus is suitable for research with children as young as 5 years old due to its vocabulary and sentence structure.
The BabyBEL recordings are available for download, facilitating future research.
Understanding performance variations across lists and between age groups is essential for experimental design.