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EXP1: Two-Interval Forced Choiceumassbostonbabylab.weebly.com/uploads/6/4/9/3/64936741/imrf20… ·...
Transcript of EXP1: Two-Interval Forced Choiceumassbostonbabylab.weebly.com/uploads/6/4/9/3/64936741/imrf20… ·...
Hiu Mei Chow & Vivian M. Ciaramitaro
Changing contributions from shape contour, protrusion number andWhat makes a shape /baba/ to a child versus an adult?
protrusion size in sound-shape correspondence
Psychology Department, University of Massachusetts Boston, Boston, MA
INTRODUCTION
GENERAL METHOD
EXP1: Two-Interval Forced Choice
EXP2: Two-Alternative Forced Choice CONCLUSION
Abbreviated References: Chen et al., (2016). Sci. Rep. Dukette & Stiles (2001). Dev. Sci. Nayar et al., (2015). J Exp Child PsycholPoirel et al., (2008). Dev. Psychol Poirel et al., (2011). PLoS ONE.
Sound-shape correspondence is the association between abstract shapes and sounds. One example is the bouba/kiki
associated with a sound like /bouba/ whereas a spikey shape is associated with a sound like /kiki/. Shape features like contour and the number and size of
relevant visual features. The weight assigned to a particular visual feature can vary based on the perceptual processing style an adult adopts.
We found that adults associated /i/ sounds with shapes having spiky contours and 3 small protrusions. Of these shape features, shape contour showed the strongest association. While 9-11 year-olds showed adult-like shape processing biases, 6-8 year-olds prioritized protrusion number, not shape contour. Yet, 6-8 year-olds could make associations based on shape contour when shape contour was highlighted by presenting round and spikey shapes side-by-side in a follow-up exp2.
prioritized when making sound-shape correspondence by 6-8 year-olds versus adults. Importantly, shape processing biases can be altered by context such that children can resemble adults when the relevant shape features are highlighted.
1
Given literature suggesting that children
adults , we hypothesized that children
(e.g. number of protrusion more often) from adults.
2-5
1 2 3
4 5
Living Laboratory, Museum of Science, Boston
Stimuli
/baba/ /gaga/ /kiki/ /titi/
Set-up
+
/baba/
Which sound matches better with the shape?
/kiki/
4 sound pairs x 8 shapes x 2 = 64 trials
Time
700ms
700ms
6s response
+
+
/baba/
Time
Which shape matches better with the sound?
4 shape pairs x 4 sounds x 4 = 64 trials
700ms
6s response
Contour round vs. spikey
Protrusion size large vs. small
Protrusion number 7 vs. 3
So
un
d p
refe
ren
ceC
ou
nt
6-8(n=16)
9-11(n=17)
18-35(n=42)
Shap
e p
refe
ren
ceC
ou
nt
Sound ba/ga vs. ki/ti
6-8(n=15)
9-11(n=18)
18-35(n=43)
ba/g
a
ba/g
a
ba/g
a
roun
dsp
ikey
1 2 30
6-8
0 1 2 30 1 2 3
Reaction Time (s)1 2 30
Reaction Time (s)
9-11
18-3
5
6-8
9-11
18-3
5
6-8
9-11
18-3
5
6-8
9-11
18-3
5