We are pleased to share a new publication by Xiaoyu, Yuyan, and Youngah in Language and Speech.
The paper, titled “Exploring Substantive Bias Through Incidental Phonological Learning: Accuracy and Conscious Status of the Resultant Knowledge,” investigates how substantive bias emerges in phonological learning by comparing the acquisition of phonetically natural patterns (vowel harmony) versus unnatural ones (vowel disharmony).
To address why many previous studies have struggled to find evidence for this bias, the team introduced a disguise task to minimize intentional learning. Moving beyond traditional accuracy rates, the study also comprehensively measured the conscious status of the participants’ resultant knowledge. The results showed that while overall learning rates were low across the board, participants exposed to the “unnatural” vowel disharmonic items actually had a higher likelihood of possessing conscious judgment knowledge compared to the harmonic group. The authors attribute this to the possibility that disharmonic items are perceptually more distinctive in a strictly incidental learning environment.
Overall, the findings demonstrate that substantive bias may not always manifest in basic accuracy rates, but rather through differences in knowledge consciousness, offering a fresh perspective on how we evaluate and understand the acquisition of phonological patterns.
Yu, X., Xue, Y., & Do, Y. (2026). Exploring substantive bias through incidental phonological learning: Accuracy and conscious status of the resultant knowledge. Language and Speech. open_in_new DOI