Executive function in preschool children who stutter: a behavioral assessment study.

Area of Science:

• Speech-language pathology
• Developmental psychology
• Cognitive neuroscience

Background:

• Developmental stuttering involves speech disfluencies like repetitions and prolongations.
• Executive function, crucial for goal-directed behavior and regulation, is hypothesized to be impaired in children who stutter.
• Limited research exists on specific executive function deficits in preschool-aged children with stuttering.

Purpose of the Study:

• To investigate executive function subcomponents in preschool children with developmental stuttering.
• To compare executive function performance between children who stutter and their typically developing peers.
• To identify specific cognitive factors contributing to stuttering in early childhood.

Main Methods:

• An age- and gender-matched case-control study design was employed.
• Behavioral experiments were conducted to assess various executive function subcomponents.
• Participants included preschool children diagnosed with developmental stuttering and a control group without stuttering.

Main Results:

• Preschool children who stutter demonstrated significantly lower performance in both verbal and visual working memory tasks.
• Findings extend previous research by indicating broader working memory system impairments, not just verbal short-term memory.
• Deficits were observed in central executive functions within the working memory system.

Conclusions:

• Preschool children with developmental stuttering exhibit deficits across the working memory system, including central executive functions.
• These findings highlight the role of executive function impairments in the etiology or maintenance of stuttering.
• Further research should explore targeted interventions for executive function in early stuttering treatment.