Word Knowledge Dimensions in L2 Lexical Inference: Testing Vocabulary Knowledge and Partial Word Knowledge.

Area of Science:

• Second Language Acquisition
• Applied Linguistics
• Psycholinguistics

Background:

• Effective second language (L2) vocabulary acquisition is crucial for overall proficiency.
• Understanding how L2 learners infer word meanings is key to improving instruction.
• Existing research highlights various components of word knowledge, but their specific roles in inference require further exploration.

Purpose of the Study:

• To investigate the contribution of different word knowledge dimensions to L2 word-meaning inference.
• To identify which specific aspects of word knowledge are most predictive of lexical inferencing ability.
• To provide theoretical and applied insights into L2 vocabulary development.

Main Methods:

• A multivariate path analysis was employed.
• 121 college-level L2 learners completed word knowledge tests (vocabulary size, word associates, morpheme knowledge, etc.).
• Participants also undertook pseudoword and real-word lexical inferencing tasks.

Main Results:

• Word knowledge dimensions collectively contributed to L2 lexical inference, even when controlling for text comprehension.
• Word associates and morpheme-form knowledge demonstrated the strongest predictive power for lexical inference.
• Other dimensions like vocabulary size and morpheme meaning knowledge also played significant roles.

Conclusions:

• Specific dimensions of word knowledge, particularly word associations and morpheme-form knowledge, are vital for L2 lexical inference.
• These findings have significant implications for designing targeted L2 vocabulary instruction.
• Further research can explore the interplay of these knowledge dimensions in diverse L2 learning contexts.