Acoustic features of vocalizations in typically developing and autistic infants in the first year.

ABSTRACT:

Background

We describe acoustic patterns across the five most prominent vocal types in typically developing infants (TD) and compare them with patterns in infants who develop autism (ASD) or a developmental disability (DD) not related to autism. Infant-directed speech (IDS) is a potentially important influence on such vocal acoustic patterns. Both acoustic patterns and effects of IDS are important for understanding the earliest origins of communication disorders.

Aims

To compare duration, pitch and loudness of infant vocalizations for three groups of infants (TD, ASD, DD) in circumstances with high or low amounts of IDS.

Methods and procedures

Two five-minute segments from each of 1259 all-day recordings across the first year were coded and acoustically analyzed for t

SUBMITTER: Oller DK 

PROVIDER: S-EPMC11560582 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature