Gesture-speech integration in children with specific language impairment

Area of Science:

• Developmental Psychology
• Linguistics
• Communication Sciences

Background:

• Children with specific language impairment (SLI) have expressive language difficulties but normal nonverbal IQ.
• Speakers may use gestures when spatial thinking is easier than spoken language organization.

Purpose of the Study:

• To investigate if children with SLI rely more on gestures due to weaker spoken language abilities.
• To compare gesture use and information expression in children with SLI versus typically developing (TD) peers.

Main Methods:

• 15 children with SLI and 18 TD children retold a story after watching a cartoon.
• Gestures and speech were coded for meaning and redundancy.
• Speech-gesture combinations were analyzed for information overlap.

Main Results:

• Children with SLI produced significantly more gestures than TD children.
• No significant difference in the non-redundancy of speech-gesture combinations between groups.
• Younger children in both groups produced more non-redundant speech-gesture combinations than older children.

Conclusions:

• The integration of speech and gesture functions similarly in children with SLI and TD.
• Children with SLI appear to use gestures more to aid message formulation and expression.
• Findings suggest potential for interventions using manual gestures to support language development in SLI.