Articulatory information helps encode lexical contrasts in a second language.

Area of Science:

• Second Language Acquisition
• Phonetics
• Psycholinguistics

Background:

• German speakers often struggle with the English /ε/–/æ/ vowel distinction.
• Accurate perception of phonemic contrasts is crucial for lexical access in a second language.

Purpose of the Study:

• To investigate if articulatory information enhances the learning of a difficult second-language vowel contrast.
• To determine if visual and/or motoric input aids in distinguishing novel words with English /ε/ and /æ/ vowels for German learners.

Main Methods:

• Novel words with English /ε/ and /æ/ vowels were trained using audio-only, audiovisual, or repetition methods.
• A visual-world eye-tracking task was used to measure word recognition accuracy and fixation patterns.
• Participants were native German speakers learning English.

Main Results:

• Audiovisual input and word repetition training led to asymmetric recognition, favoring /ε/ words, similar to native speaker patterns.
• Audio-only training did not produce this recognition asymmetry; /ε/ and /æ/ words were fixated similarly.
• Articulatory knowledge acquisition was linked to improved discrimination of the target vowels.

Conclusions:

• Visual and active production of speech sounds facilitate the learning of difficult second-language phonemes.
• Articulatory information, beyond auditory input, is beneficial for encoding lexical distinctions in a new language.
• Learners benefit from multimodal and active learning strategies for mastering foreign sound contrasts.