Speech Prosody, Leiden, Hollanda, 11 Mart 2024, ss.1-5
Processing of word stress is a complex mechanism that has an impact on
prosodic information, the predictability of speakers’ native language,
and their sensitivity to shifting stress positions. It is still unclear
whether the complexity arises in response to alternations in Turkish
stress patterns and whether they exhibit sensitivity to syllable
structure. To address these questions, two studies were designed to
focus on the pupil dilation response (PDR), a measure employed as a
proxy for cognitive load. The current study examined the changes in
pupil size with forty-six native Turkish speakers. In Experiment 1, 30
CV.CV.CV words were used with canonical final stress and 30 words in a
2×3 design with penultimate stress pronounced with final, medial, and
initial stress types each. In Experiment 2, a syllable weight factor was
added by using 30 CVC.CV.CV words in a 3×3 design from each of the
three stress types with shifts to other syllables. The LME models showed
that the changes from exceptional stress to a default final position do
not directly cause increased PDR for Experiment 1. However, the results
for Experiment 2 suggest that syllable weight is sensitive to PDR and
plays a significant role in cognitive processing.