The document discusses infant speech perception and development. It notes that infants begin learning their native language before birth through exposure to their mother's voice and languages. After birth, infants show a preference for their mother's voice and familiar sounds heard prenatally. The document then outlines four stages of speech development from 0-3 months to 9-12 months, describing typical vocalizations and skills at each stage such as cooing, babbling, and first words. Finally, it briefly mentions common speech disorders.

1. Infant speech
perception
Prepared
by : pooja
jassani
Topic : Sensation and Perception
Subject : AP 110
Instructor : John Merrill Dcruz

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Infants have actually been learning their native
language since before they were even born!
After birth, Infants normally shows biases
towards hearing their mothers' voice and
language and listening to stories and songs
heard prenatally.
This is because infants recognizes the speech patterns and
voice through his/her thought process
Infants have actually been learning their native
language since before they were even born!
After birth, Infants normally shows biases
towards hearing their mothers' voice and
language and listening to stories and songs
heard prenatally.
This is because infants recognizes the speech patterns and
voice through his/her thought process

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• Stages of speech :
• 4 categories
• 0-3, 3-6, 6-9 and 9-12 months.
• Why stages ?
• To understand the process of how infants develop the
art of speech.

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• Babies begin to coo at 1 to 3 months. Instead of simply being
startled by sounds, babies start to respond more specifically to
sounds — first by turning their heads and changing their facial
expressions and then by actually cooing . These sounds will
probably be music to your ears, as well they should be. You can
consider these sounds to be your child's first words to you, as
simple cooing and other verbalizations represent the very
beginning of language development
• Babies begin to coo at 1 to 3 months. Instead of simply being
startled by sounds, babies start to respond more specifically to
sounds — first by turning their heads and changing their facial
expressions and then by actually cooing . These sounds will
probably be music to your ears, as well they should be. You can
consider these sounds to be your child's first words to you, as
simple cooing and other verbalizations represent the very
beginning of language development

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• Babies at this age enjoy making sounds. Not only do they like to
laugh and squeal with pleasure and excitement, but they have
perfect ability to coo, and blow raspberries. Some begin to make
consonant sounds (n, d, p, b), most can link sounds with the
objects that made them, and by the time they reach 6 months of
age, they often start to actually imitate sounds.
• Babies at this age enjoy making sounds. Not only do they like to
laugh and squeal with pleasure and excitement, but they have
perfect ability to coo, and blow raspberries. Some begin to make
consonant sounds (n, d, p, b), most can link sounds with the
objects that made them, and by the time they reach 6 months of
age, they often start to actually imitate sounds.

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• Babies will babble at this age. During these months, most
babies start to vocalize a lot more in ways other than crying, not
the least of which is laughing more frequently. You're also likely
to notice a progression in your baby's talking abilities — from
making four different consonant sounds or stringing together
chains of vowel-consonant sounds to combining syllables into
word-like utterances and shouting to attract attention.
• Babies will babble at this age. During these months, most
babies start to vocalize a lot more in ways other than crying, not
the least of which is laughing more frequently. You're also likely
to notice a progression in your baby's talking abilities — from
making four different consonant sounds or stringing together
chains of vowel-consonant sounds to combining syllables into
word-like utterances and shouting to attract attention.

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• Babies will say their first words during this time. At 9 months, infants are often
fairly talented at multi-syllable babbling and imitating sounds. Over the subsequent
months, you may find that your baby starts to imitate the tone and inflection in
your voice as well and may even say his first word.
• Words such as "mama" and "dada" clearly have meaning to infants at this age, and
some will even say them by the time they turn 1. ("Dada" is much more common
than "mama," not as a reflection of a baby's preference, but because "da" is a
much easier sound to make than "ma.")
• Also at this age babies develop improved nonverbal communication skills. This is a
fun age, where many babies not only start to communicate verbally, but clearly
seem to understand more and interact more. They typically learn to point in
response to simple questions such as "Where's the ball?" or "Where's Mommy?"
and to wave good-bye.
• Babies will say their first words during this time. At 9 months, infants are often
fairly talented at multi-syllable babbling and imitating sounds. Over the subsequent
months, you may find that your baby starts to imitate the tone and inflection in
your voice as well and may even say his first word.
• Words such as "mama" and "dada" clearly have meaning to infants at this age, and
some will even say them by the time they turn 1. ("Dada" is much more common
than "mama," not as a reflection of a baby's preference, but because "da" is a
much easier sound to make than "ma.")
• Also at this age babies develop improved nonverbal communication skills. This is a
fun age, where many babies not only start to communicate verbally, but clearly
seem to understand more and interact more. They typically learn to point in
response to simple questions such as "Where's the ball?" or "Where's Mommy?"
and to wave good-bye.

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Three common speech disorders are:
•Articulation disorders
•Disfluency
• Disfluencies are disorders in which a person repeats
a sound, word, or phrase.
•Voice disorders
• Voice disorders are caused by problems when air passes
from the lungs, through the vocal cords, and then through the
throat, nose, mouth, and lips.

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