Speech Prosody 2002
The earlier work of  showed that listeners could discern speaker-ethnicity from both full and shortened stretches of casually-produced speech. The type of cues listeners used to accomplish this remained unclear, however. In this study the phonetic detail of speech was removed by filtering; both mono- and multilingual subjects were then required to determine the ethnicity of speakers using the prosodic cues that remained. Results show that attributions can still be made using such cues. Also seen was that monolingual listeners tended to be the better performers. Overall however, the task was less trivial than the majority of subjects had anticipated.
Bibliographic reference. Todd, Richard (2002): "Speaker-ethnicity: attributions based on the use of prosodic cues", In SP-2002, 663-666.