Motor sequence learning in children with recovered and persistent developmental stuttering: preliminary findings

Area of Science:

• Neuroscience
• Developmental Psychology
• Motor Control

Background:

• Previous research suggests a link between developmental stuttering and challenges in acquiring new motor skills.
• Understanding the nuances of motor skill acquisition in children with persistent developmental stuttering (CWS) is crucial for targeted interventions.

Purpose of the Study:

• To investigate non-speech motor sequence learning in children with persistent developmental stuttering (CWS), children who have recovered from developmental stuttering (CRS), and typically developing controls (CON).
• To differentiate between potential deficits in sequence learning itself versus general fine motor performance in CWS.

Main Methods:

• Participants (CWS, CRS, CON) completed a two-day Multi-Finger Sequencing Task involving repeated and random 10-element sequences.
• Motor sequence learning was assessed using accuracy and response synchrony, with analysis of error types, recognition, and recall.

Main Results:

• CWS exhibited lower initial accuracy compared to CON and CRS, but performance improved to control levels by the second day.
• No significant differences in response synchrony or sequence learning scores (repeated vs. random) were found among the groups.
• While CON and CRS adapted to errors, CWS consistently corrected errors without significant strategy changes.

Conclusions:

• Developmental stuttering appears to be associated with general fine motor performance difficulties rather than inherent deficits in sequence learning.
• These findings suggest that interventions may need to address broader motor skill challenges in children who stutter.