Conversational Speech Behaviors Are Context Dependent.

Area of Science:

• Psychology
• Linguistics
• Speech Science

Background:

• The interpersonal synergy model posits that individuals adapt communication behaviors to conversational contexts.
• Existing research validates this model for linguistic aspects (semantics, syntax) but not for speech behaviors (rate, pitch).
• Understanding speech behavior adaptation is crucial for communication research.

Purpose of the Study:

• To investigate whether interlocutors modify their speech behaviors (e.g., speech rate, pitch) based on different conversational tasks and goals.
• To test the interpersonal synergy model's applicability to acoustic speech features.

Main Methods:

• 28 participants engaged in two distinct conversation types: relational and informational.
• Each participant conversed with two partners, resulting in 112 total conversations.
• Six acoustic measures of speech behavior were analyzed and compared across conversational tasks and partners.

Main Results:

• Significant differences were found in speech feature measures between informational and relational conversations.
• These speech behavior adjustments were largely consistent regardless of the conversational partner.
• Statistical analysis using linear mixed-effects models confirmed these findings.

Conclusions:

• Conversational context and task demands significantly influence speakers' acoustic speech behaviors.
• The findings provide empirical support for the interpersonal synergy model in spoken dialogue.
• This research has implications for understanding and assessing speech patterns in individuals with communication disorders.