Does Scale-Free Syntactic Network Emerge in Second Language Learning?

Area of Science:

• Linguistics
• Complex Systems Science
• Computational Linguistics

Background:

• First language (L1) acquisition shows spontaneous emergence of scale-free and small-world syntactic complex networks around 24 months.
• Consensus is lacking on whether similar syntactic network properties emerge in foreign language (L2) learning.

Purpose of the Study:

• To investigate the emergence of scale-free and small-world syntactic complex network properties in L2 learning.
• To determine if these properties emerge suddenly or are present from the beginning of L2 acquisition.

Main Methods:

• Application of complex network analysis to L2 learning.
• Construction and analysis of nine syntactic networks based on English compositions by Chinese students.

Main Results:

• The syntactic complex network in L2 learners exhibits scale-free and small-world properties from the initial stages of learning.
• These properties persist throughout the L2 learning process, differing from L1 acquisition patterns.
• L1 syntactic system appears to provide a foundation for L2 syntactic development.

Conclusions:

• L2 syntactic development is characterized by a gradual approximation to the target language, not a sudden emergence of a system.
• The study offers a novel perspective on L2 syntactic emergence using complex network theory.
• A macroscopic description of the L2 syntactic developmental trajectory is provided.