Superficial auditory (dis)fluency biases higher-level social judgment

Area of Science:

• Cognitive psychology
• Social psychology
• Acoustic phonetics

Background:

• Social impressions are formed based on both content and delivery.
• Voice characteristics, beyond speech content, influence social judgments.
• Modern communication technologies introduce extrinsic auditory properties affecting voice perception.

Purpose of the Study:

• To investigate the impact of superficial auditory properties on social judgments.
• To determine if degraded voice quality affects perceptions of speaker traits.
• To examine the influence of extrinsic vocal factors on higher-level social evaluations.

Main Methods:

• Participants listened to narrated passages with controlled comprehension.
• Audio recordings were manipulated to simulate varying microphone qualities.
• Listeners provided judgments on speaker intelligence, credibility, and desirability.

Main Results:

• Disfluent auditory signals (e.g., "tinny" speech) led to decreased judgments of intelligence, hireability, credibility, and desirability.
• Effects were consistent across different speakers (gender, accent) and speech types (human, synthesized).
• Comprehension of the spoken words was equated across conditions, isolating auditory quality effects.

Conclusions:

• Superficial auditory properties significantly bias social judgments, independent of message content.
• Voice delivery vehicle, not just content, shapes perceptions of speaker attributes.
• These findings highlight the importance of auditory fluency in social evaluations, especially in digital communication.