Examining the Temporal Development of Phonetic and Lexical Learning in Second Language

Area of Science:

• Second Language Acquisition
• Phonetics and Phonology
• Psycholinguistics

Background:

• Previous research shows mixed results on how second-language (L2) learners establish distinct lexical representations for phonetically confusable sounds.
• Understanding the early stages of L2 phonetic categorization and lexical encoding is essential.

Purpose of the Study:

• To investigate how L2 learners lexically encode confusable phonemes.
• To examine the development of phonetic categorization and lexical encoding abilities in early L2 learning.
• To compare these abilities for L2 words with sound pairs influenced by native language (L1) categories versus those without.

Main Methods:

• Native Korean speakers learned Arabic words with two types of sound pairs for four days.
• Phonetic categorization was assessed using an AXB discrimination task.
• Lexical processing was evaluated through a lexical decision task.

Main Results:

• Phonetic categorization of L2 words with L1-dominant sound pairs developed rapidly.
• L2 learners successfully discriminated and overcame lexical competition for these words.
• Conversely, learners showed poor discrimination and lexical encoding for words lacking L1 category influence.

Conclusions:

• Accurate L2 phonetic categorization is a prerequisite for successful L2 lexical encoding.
• The lexical representation of L2 words with confusable phonemes depends on the interplay between L1 and L2 sound categories.