What makes other-accented talkers difficult to identify?

Area of Science:

• Psycholinguistics
• Sociolinguistics
• Speech Perception

Background:

• Listeners often experience difficulty recognizing talkers with unfamiliar accents, termed the Other Accent Effect (OAE).
• Two primary hypotheses attempt to explain the OAE: the Processing Load Hypothesis and the Sociolinguistic Attitudes Hypothesis.
• The Processing Load Hypothesis suggests increased cognitive effort for comprehending accented speech detracts from talker identification.
• The Sociolinguistic Attitudes Hypothesis posits that negative social perceptions of certain accents lead to out-group classification, impairing processing.

Purpose of the Study:

• To investigate the underlying mechanisms of the Other Accent Effect (OAE).
• To test the validity of the Processing Load Hypothesis and the Sociolinguistic Attitudes Hypothesis in explaining the OAE.
• To examine how factors like accent intelligibility and social prestige influence talker identification by Canadian English listeners.

Main Methods:

• Two experiments were conducted involving Canadian English listeners identifying talkers from voice lineups.
• Experiment 1 manipulated speech predictability and presented accents varying in social prestige and intelligibility (Canadian, Australian, Southern U.S., Mandarin-accented English).
• Experiment 2 systematically varied accent strength to assess its impact on intelligibility and social marking.

Main Results:

• Contrary to expectations, variations in accent intelligibility did not significantly affect talker identification performance.
• The social prestige associated with different accents also did not influence listeners' ability to identify talkers.
• Accent strength, while varied, did not emerge as a determining factor in the observed identification accuracy.

Conclusions:

• The study's findings suggest that neither accent intelligibility nor social prestige are primary drivers of the Other Accent Effect (OAE).
• The results challenge existing hypotheses and indicate that other mechanisms may underlie difficulties in recognizing talkers with different accents.
• Further research is needed to explore alternative explanations and the cognitive processes involved in the OAE and talker recognition.