Individual variability in cue-weighting and lexical tone learning.

Area of Science:

• Linguistics
• Auditory Neuroscience
• Second Language Acquisition

Background:

• Speech sound perception relies on multiple acoustic cues.
• The emphasis placed on these cues (cue-weighting) is language-specific.
• Adult speech sound training can alter cue-weighting.

Purpose of the Study:

• To investigate how individual differences in acoustic cue-weighting affect learning foreign speech sound patterns.
• To determine if pre-training cue-weighting predicts success in learning lexical pitch contours.

Main Methods:

• Sixteen English-speaking adults learned Mandarin pitch contours.
• Participants completed cognitive tests, pitch discrimination, and identification tasks.
• Multidimensional scaling analyzed reaction time data from pitch discrimination.

Main Results:

• Pitch perception is primarily based on pitch height and direction.
• Successful learners prioritized pitch direction over pitch height compared to less successful learners.
• Training improved pitch identification and labeling, but pre-training differences in cue-weighting persisted.

Conclusions:

• Individual variability in learning foreign lexical pitch is linked to pre-existing differences in acoustic cue-weighting.
• Attentional biases towards specific acoustic cues, like pitch direction, are key factors in learning new tonal patterns.