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Speech Perception 2 (Perceiving Degraded Speech (The ability to hear…
Speech Perception 2
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Infant Speech Perception
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When the VOT is shifted across the average adult phonetic boundary, the infants perceive a change in the sound, and when the VOT is shifted toward the same side of the phonetic boundary, the infants perceive little or no change in the sound
Young infants of all cultures can tell the difference between sounds that create all of the speech sounds used in the worlds languages; However, by the age of 12 months, infants have lost the ability to distinguish between some of these sounds
This occurs as a result of experience-dependent-plasticity - a change in the brains ability to respond to specific stimuli that occur as a result of experience
Social Gating Hypothesis
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This hypothesis explains why learning doesn't occur when the infants just view DVD images, and suggests a reason why children with autism, who tend to avoid normal social contact, are deficient in language
Learning to perceive speech, it appears, is a process of specialization guided by experience and facilitated by social interaction
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