Phonetically Grounded Structural Bias in Learning Tonal Alternations.

Area of Science:

• Linguistics
• Phonetics
• Psycholinguistics

Background:

• Tone alternation learning involves structural biases.
• Existing research suggests a tendency to prefer uni-directional over bi-directional tone deletions.

Purpose of the Study:

• Investigate if tone alternation directionality influences learning.
• Determine if structural simplicity, grounded in phonetic factors, underlies this bias.
• Examine the role of native language (L1) transfer in tone deletion learning.

Main Methods:

• Two experiments were conducted with Mandarin and Cantonese speakers learning artificial languages with varying tone deletion patterns.
• Participants learned languages with bi-directional, uni-directional left-dominant, and uni-directional right-dominant tone deletions.
• A follow-up experiment with Cantonese speakers controlled for L1 transfer from Mandarin.

Main Results:

• Mandarin speakers showed a learning bias toward uni-directional, right-dominant patterns.
• Cantonese speakers also exhibited a bias toward right-dominant patterns, independent of L1 transfer.
• Results align with phonetic factors influencing structural simplicity in tone learning.

Conclusions:

• Tone alternation directionality creates a structural learning bias.
• Phonetic factors, like syllable contour-tone bearing ability, likely ground this bias.
• The observed asymmetry in tone alternations reflects a universal, phonetically-driven learning preference.