Auditory temporal processing in disabled readers with and without oral language delay

Area of Science:

• Neuroscience
• Developmental Psychology
• Speech and Language Pathology

Background:

• Inferior auditory temporal processing is hypothesized to cause phonological deficits in reading disabled children with oral language delay (LDRDs).
• This deficit is thought to be absent in specifically disabled readers with normal oral language (SRDs).

Purpose of the Study:

• To compare auditory temporal processing and phonological decoding skills in SRDs, LDRDs, and normal readers.
• To investigate the relationship between auditory temporal processing and oral language abilities in different subgroups of reading disabilities.

Main Methods:

• The study included 7-10-year-old children categorized as SRDs, LDRDs, and normal readers.
• Participants were assessed on measures of auditory temporal processing (temporal order judgement) and phonological decoding (nonword reading).

Main Results:

• LDRDs showed significant deficits in temporal order judgement compared to normal readers; SRDs did not differ significantly from normal readers.
• LDRDs performed worst on nonword reading, while SRDs also exhibited significant deficits compared to normal readers.
• Large variability in auditory temporal processing suggests this relationship is not universal among all disabled readers with oral language weakness.

Conclusions:

• Auditory temporal processing and oral language skills are related, but not in all disabled readers.
• Deficits in temporal processing do not represent the sole cause of phonological and language impairments in disabled readers.
• Reading disabilities likely stem from a complex interplay of factors beyond auditory temporal processing.