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Evolution of Vocal Communication > Vocal Learning > Flashcards

Flashcards in Vocal Learning Deck (13):
1

What is vocal learning?

the ability to modify acoustic and syntactic sounds, acquire new sounds via imitation, and produce vocalizations

2

Freeberg 06

chickadees had greater call complexity if in a larger group when raised in aivary and field settings
-- changes occurred over a couple of weeks suggests rapid response to change of location

3

Freeberg 06 limitation

88.1% interrater reliability
only one species
weren't sure on the sex

4

Kuhl and Meltzoff 96
BUT

72 infants in age groups of 12, 16 and 20 weeks where developmental change occurs
/a/ /i/ /u/ presented as auditory-visual face-voice stimuli
63/72 produced at least one utterance
there was progression over the 3 groups - vowel spaces were more wide and infants said same vowel as model
BUT correlational

5

Delvaux and Soquet 07

exposure to 2 Belgian-French accents
two participant groups: Leige and Brussles
exposure changed Ps vowel production towards exposed accent for up to 10 minutes

6

Pardo et al. 12
method

took speech samples from new college roommates, 5 pairs of 19-21 year olds
roommate relationship questionnaire
perceptual similarity judgements and acoustic analysis of speech collected -- recordings of 2 sentences that have variation across US accent regions
performed an ABX listening task - convergence assessed at 4 time points, comparing pronunciation at T2-4 to T1
measured first 2 formants duration

7

Pardo et al. 12
findings

most convergence and liked each other the most at T3
BUT lots of variation in convergence

8

Adank et al. 13

sentences spoken by 2 speakers of Glaswegian - regional accent
participants first year university students age range of 18-55 years old
imitation had a positive effect on social attractiveness compared to repeating without imitating their accent

9

Adank et al. 13 limitations?

recoded all rating scores from low to high -- is this not cheating to get a better result?
didn't monitor regional background, said after experiment they were unfamiliar with scottish accent

10

Stoeger et al, 12

male Asian elephant that matched Korean formants and fundamental frequency so well it could be understood
-- social circumstances of these imitations may suggest vocal learning exists to cement social bonds

11

Adank et al. 10
method

6 groups with controls for training, exposure to accent, for speaking and for extra attention (transcribing)
trained for imitation and for imitation with noise
new accent used
- tense-lax vowel pairs were switched
- dipthongal vowels were realised as monophthongal vowels
adjusted noise to speakers performance - no feedback given

12

Adank et al. 10
findings

imitation of accented speech led to better comprehension of that accent in noise
-- vocal imitation supports effective communication

13

Mercardo et al. 14

sound imitation may have evolved in animals to enhance the perception of ongoing actions and predictions of social events rather to facilitate mate attraction or form social bonds