Perceptual Learning and Production Practice Differentially Affect How Children Produce Novel Words.

Area of Science:

• Child language acquisition
• Speech production and perception

Background:

• Children develop adult-like speech accuracy through perceptual learning and production practice.
• Understanding the interaction between these mechanisms is key to optimizing speech development.

Purpose of the Study:

• To investigate how the order of perceptual learning and production practice influences speech accuracy in young children.
• To determine the conditions under which perceptual learning and production practice interact effectively.

Main Methods:

• Sixty-five 3- and 4-year-old children produced nonwords in two experimental blocks: control (hear-produce once) and test (varied perceptual frequency).
• The order of control and test blocks was manipulated (control-test vs. test-control).
• Nonword accuracy was measured in relation to perceptual input frequency and production history.

Main Results:

• Production practice in the second block significantly improved nonword accuracy.
• Perceptual learning enhanced accuracy for nonwords heard 3+ times, but this effect was temporary and did not transfer to untrained productions.
• The impact of production practice was influenced by the age of acquisition of the nonword's consonants.

Conclusions:

• The interaction between perceptual learning and production practice is complex and influenced by phonological factors.
• Perceptual learning may act as temporary priming, while production practice shows a more lasting effect.
• Findings offer insights for speech-language pathologists to enhance therapeutic interventions for children's speech accuracy.