Articulation effort: transitivity and observer agreement

Area of Science:

• Linguistics
• Speech Science
• Psychology

Background:

• Understanding the articulatory effort required for speech sounds is crucial for phonological development and acquisition research.
• Previous research has explored various methods for quantifying speech production characteristics.

Purpose of the Study:

• To investigate the reliability of human judgments on the effort required to articulate consonants.
• To determine if subjective articulation effort scales correlate with established linguistic and developmental data.

Main Methods:

• Three studies involved 86 observers using paired-comparison tasks to rate the articulation effort of 16 consonants.
• Data analysis focused on inter-observer and intra-observer reliability, and correlations with phonological acquisition and feature analysis.

Main Results:

• Observers demonstrated significant difficulty in consistently judging articulation effort, exhibiting reversals and low agreement.
• Despite individual unreliability, pooled articulation effort data showed strong correlations with phonological acquisition patterns.
• The derived articulation effort scales also correlated highly with linguistic feature analysis.

Conclusions:

• Subjective judgments of articulation effort are inherently unreliable for individual consonant perception.
• Aggregated subjective data on articulation effort can provide valuable insights into phonological acquisition and linguistic feature organization.
• This study highlights the complexity of quantifying speech production parameters through perceptual tasks.