Learning words and learning sounds: Advances in language development.

Area of Science:

• Developmental Psychology
• Linguistics
• Cognitive Science

Background:

• Phonological development is often viewed as learning sounds and forming categories, supported by infant speech perception studies showing 'perceptual narrowing'.
• Conversely, early word production studies suggest holistic word learning may precede phonological category formation.
• This alternative view posits that children match vocal patterns to words, with phonological knowledge arising from related word forms.

Purpose of the Study:

• To review evidence from early word production regarding phonological development.
• To explore how implicit and explicit learning mechanisms reconcile differing theories of phonological acquisition.
• To integrate findings from speech perception and word production for a comprehensive model.

Main Methods:

• Review of existing literature on infant speech perception and early word production.
• Analysis of evidence supporting holistic word learning versus phonological category formation.
• Theoretical integration using the complementary memory systems model.

Main Results:

• Evidence from word production suggests holistic learning may precede phonological categorization.
• Phonological knowledge may emerge from the network of related word forms rather than solely from sound perception.
• The complementary memory systems model offers a framework for reconciling these developmental pathways.

Conclusions:

• Early word learning might be holistic, with phonological system knowledge developing later.
• Implicit and explicit learning mechanisms can explain the integration of perception and production in phonological development.
• A comprehensive model of phonological development should consider both perception and production evidence.