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Chimpanzees combine pant hoots with food calls into larger structures
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Communicative eye contact signals a commitment to cooperate for young children
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Sound symbolic congruency detection in humans but not in great apes
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Acquisition of a socially learned tool use sequence in chimpanzees : implications for cumulative culture
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Automated face detection for occurrence and occupancy estimation in chimpanzees
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Communication in the second and third year of life : relationships between nonverbal social skills and language
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Understanding metacognitive confidence : insights from judgment-of-learning justifications
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| 9 |
Proto-consonants were information-dense via identical bioacoustic tags to proto-vowels
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| 10 |
Listeners can extract meaning from non-linguistic infant vocalisations cross-culturally
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| 11 |
Great apes and children infer causal relations from patterns of variation and covariation
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| 12 |
Sensitivity to relational similarity and object similarity in apes and children
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| 13 |
Morphologically structured vocalizations in female Diana monkeys
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| 17 |
A general auditory bias for handling speaker variability in speech? Evidence in humans and songbirds
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Abstract:
Different speakers produce the same speech sound differently, yet listeners are still able to reliably identify the speech sound. How listeners can adjust their perception to compensate for speaker differences in speech, and whether these compensatory processes are unique only to humans, is still not fully understood. In this study we compare the ability of humans and zebra finches to categorize vowels despite speaker variation in speech in order to test the hypothesis that accommodating speaker and gender differences in isolated vowels can be achieved without prior experience with speaker-related variability. Using a behavioral Go/No-go task and identical stimuli, we compared Australian English adults’ (naïve to Dutch) and zebra finches’ (naïve to human speech) ability to categorize / I/ and /ε/ vowels of an novel Dutch speaker after learning to discriminate those vowels from only one other speaker. Experiments 1 and 2 presented vowels of two speakers interspersed or blocked, respectively. Results demonstrate that categorization of vowels is possible without prior exposure to speaker-related variability in speech for zebra finches, and in non-native vowel categories for humans. Therefore, this study is the first to provide evidence for what might be a species-shared auditory bias that may supersede speaker-related information during vowel categorization. It additionally provides behavioral evidence contradicting a prior hypothesis that accommodation of speaker differences is achieved via the use of formant ratios. Therefore, investigations of alternative accounts of vowel normalization that incorporate the possibility of an auditory bias for disregarding inter-speaker variability are warranted. ; Publisher PDF ; Peer reviewed
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Keyword:
BF; BF Psychology; Comparative cognition; NDAS; Speech perception; Vowel categorization; Vowel normalization; Zebra finch
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URL: http://hdl.handle.net/10023/10185
https://doi.org/10.3389/fpsyg.2015.01243
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| 18 |
Identifying partially schematic units in the code-mixing of an English and German speaking child
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| 20 |
Are apes essentialists? Scope and limits of psychological essentialism in great apes
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