* using your knowledge to interpret and understand how language is processed and produced * knowing info surrounding how speech sounds are made as well as knowing info about certain branches of linguistics that are relevant
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informational domain
* knowledge based * take info we know and use and perceive it in a way where we can assess others and understand speech
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24 contexts in which perceptual skills are needed in speech evaluation/ assessments
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homo sapiens
only tetrapod known to speak
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tetrapods
vertebrate animals having four feet, legs or leglike appendages
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why do we not know when the first larynges and vocal folds evolved
soft tissues cannot fossilize (ex. brain and vocal tract)
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brain size and cognition
brain size is a poor predictor for animals cognitive capabilities
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Which bone of the larynx can be fossilized?
Hyoid bone
* said to be almost indistinguishable form that of the the modern human * possible relevance to speech
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Which ancestor is said to of possibly spoken?
Neanderthals
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Chimpanzee vs human brain growth at birth
* Chimpanzee brain growth slows at birth * Human brains continue to grow rapidly
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source
vocal folds vibration (larynx)
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filter
the vocal tract that changes in shape and size, thereby modifying the sound
* allows some frequencies to pass through while suppressing others
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harmonics
range of components at other frequencies
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F0 fundamental frequency
* basic rate of vocal folds during voiced speech
* perceived as vocal pitch (measured in hertz)
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humans lack ____ that exist in other primates
large air sacs
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formants are a result of
… resonance
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resonance
tendency of things to oscillate in response to sound
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F1
formant 1 (lowest)
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F2
formant 2 (higher)
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large air sacs
* play a role in nonhuman vocalizations * absence may help humans speech production mechanisms work more effectively
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humans have a longer ___
supra laryngeal vocal tract (SLVT)
* due to the larynx being much lower
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dolphin communication
* evidence of language like behaviours * have their own distinct whistle * developed a way of naming themselves for social purposes
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4 levels of linguistic complexity
1. isolation 2. word 3. sentences 4. continuous/ spontaneous speech
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2 levels of response complexity
1. single sound in each word 2. multiple sounds in each word
indicates vocal sound making has a survival value for organisms
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sryinx
voice box of birds
* consists of membranes that vibrate * sits and the junction of the bronchi
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language general perception
* infants are born with the ability to distinguish most of the contrasts of the worlds languages * adults have difficulty with unfamiliar sound contrast
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categorical change procedure
* Adults sit in a sound attenuated booth * Hears pa pa pa ba ba * Press button when sound changes
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language specific perception
* Capabilities change as we get older, contrasting sounds that do not occur in our native languages may no longer be distinguishable * Change occurs at 6-12 months
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why does language perception change from general to specific?
there is no reason to distinguish between sounds that do not cause phonemic differences in your language
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head turning procedure
* Auditory stimuli: ba ba ba pa pa * When auditory stimuli changes, baby is coerced to turn their head towards a toy, flashing light, etc. * Eventually they do not use the toy/light when the sound changes * if baby still turns their head we can conclude the child can perceive the difference
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when does hearing develop
in utero
* babies can recognize their mothers voices, test this by listening to heart rate
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4 types of cries
1. quick rise, slow fall 2. slow rise, quick fall 3. symmetrical rise and fall 4. steady
Female: F0 gets lower at age 50 compared to younger women
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what makes you sound like you
1. Organic factors (length/mass of vocal folds, size/shape of vocal tract, biological endowment) 2. Learned factors (social, how SLVT is used for articulation, dialect)
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phonation types
* Breathing (no phonation) * Breathy voice * Whispering * Normal voicing * Creaky voice * Falsetto
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accent
distance from target (“normal” Canadian accent)
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comprehensibility
* How much effort a listener puts into understanding someone (semantically) * The processing ability of the meaning
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intelligibility
* Refers to comprehension and understandability * Can the listener understand what the speaker is saying
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acceptability
making someone speak with an acceptable accent
* controversial topic
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factors that influence L2 production
1. l1 influence 2. experience 3. attention
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instrumental motivation
motivation because you need the skill for work
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integrative motivation
motivation because you need the skill to socialize
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does orthography play a role in L2 learning
* yes * may bias or distort perception/ attention
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attention during L2 learning
* Distractions shift attention away from acoustic signals and learning opportunities are lost * cannot multitask (brain is just switching back and forth between tasks)
the involuntary repetition, interruption, and prolongation of speech sounds and syllables, which the individual struggles to end
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stuttering etiology
Poorly understood and controversial
* neurophysiology dysfunction that disrupts the timing needed for speech * genetic basis: occurs more commonly in identical twins (77%) than fraternal (23%)
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lexical filled pauses
like, so, I think
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non lexical filled pauses
um, er, uh
* um: you know what you want to say but trying to articulate it properly * uh: you don't know what your talking about/wanting to say
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fluent speech is characterized by
* smooth, comfortable tempo * Appropriate pausing * Few false starts, repairs, and repetitions
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cluttering
* Rapid or irregular speaking rage with long breaks and spurts of speech * Poorly planned utterances; speaker is often unaware of impairment
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developmental dysfluency
repetitions of whole words
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pathological dysfluency
repetitions of word parts and prolongations of sounds
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stuttering diagnosis
* Many children stutter; most but not all recover * Important to distinguish between normal developmental dysfluency and pathological dysfluency
Events associated with the central nervous system that are involved in perception and production of utterances
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peripheral processes of speech
Events associated with structures outside the central nervous system (ie. ears) that are involved in the perception and production of utterances
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orthography
a writing system for representing language
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supralaryngeal vocal tract (SLVT)
Structures above the larynx used ins perch production (pharyngeal, oral, and nasal cavities)
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dialect
Language variety associated with a particular community of speakers
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vocal timbre
Features of the voice that distinguish it from other voices (ie. soprano, tenor)
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neuroplasticity
Capability of neural pathways of the brain to develop and reorganize, particularly as a result of new learning or experience
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high amplitude sucking (HAS)
Tendency for infancy to suck a pacifier more rapidly when exposed to new auditory stimuli
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dysarthria
motoric dysfunction that impairs speech in a variety of ways
* sounds are repeated and prolonged * short breathy voice * strained voice * audible inspiration * variable rate with short rushes of speech
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dysarthria treatment
* breathing capacity and breath control * control over loudness and pitch * velo-pharyngeal control * management of speech rate
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Broca’s aphasia
* non fluent aphasia * speech production is difficult * individual words or short phrases * function words omitted * language comprehension usually good
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Wernicke’s aphasia
* fluent aphasia * no trouble producing long sentences * utterances make no sense * unnecessary or made up words * difficulty understanding the speech of others = receptive aphasia
diverse range of treatments for aphasia patients based on the individuals specific needs and difficulties
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cleft palate
* Disturbance in palate/ lip development during the early part of gestation  * Runs in families  * Certain risk factors in mother * Smoking, diabetes, substance use, certain medications Â
* Often non-syndromic (an isolated issue for the child)  * can have an increased risk of ear infections Â
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cleft palate treatment
* surgery followed by therapy
SLP therapy
* Infants: feeding and swallowing assessmentÂ
* Toddlers and older children: assessment therapy for  * VPI: velopharyngeal insufficiency (causes hypernasality) * Other articulations * Phonation difficulties
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lisp
popular term that is improperly used to refer to a number of different articulations
* ex. refer to problems producing /s/ and /z/
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laryngectomy
removal of larynx (complete or partial) due to cancer, GE reflux, injury, other diseases
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stoma
opening in throat after a procedure
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electro-larynx
* a device that you hold up to your neck (larynx) * when you push a button on the device, it produces a vibration that is transferred through the skin to the throat * you then articulate the sound with your SLVT
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in-dwelling prosthesis
a valve that allows you to make sounds by pushing air from your lungs through the valve and up into your mouth to be articulated
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Aspects of speech that identify someone as a second language speaker
* accent is a normal aspect of L2 acquisition * accents are highly noticeable * accents can have both positive and negative effects on communication
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aspects of a foreign accent
* Segmental (individual consonants, vowels) * Suprasegmental (stress, rhythm, intonation) * Voice quality and use of SLVT * Non-nativelike use of pitch, nasality, retroflection of tongue
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negative effects of foreign accents on communication
* negative social evaluation that happens in the mind of the listener that may have a negative view of foreigners (not accent itself) * communication difficulties which result in loss of speaker intelligibility (frustrating and embarrassing)
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positive effects of foreign accents on communication
* Conversational adjustments from interlocutors = “foreigner talk”
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caregiver speech
* simplified vocabulary and syntax * clearer enunciation with less reduction
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major goal of second language instruction
to help learners communicate effectively with their peers in their L2
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perceptual dimensions for L2 speech evaluation
* accentedness (perceived difference) * comprehensibility (listener effort) * intelligibility (how much is understood)
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accentedness
degree of difference from the target speech sounds
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high functional load
* sounds that distinguish a large number of words from other words * many minimal pairs * high-frequency words * the focus should be on learning the distinctions between these sounds and words * ex. l and r (rock vs. lock/ write vs. light)
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low functional load
* sounds that distinguish relatively fewer words from other words * few minimal pairs * uncommon words * ex. th and f (three vs free/ think vs. fink/ threw vs. frew)
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individual variability (problem with pronunciation instruction in the classroom)
* learners often do not share the same areas of difficulty EVEN when they have the same L1
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zoom principle
* learning more broad and then becoming more narrow
* start with general speaking patterns and suprasegmentals * vowels are more important than consonants * functional load * wouldn’t focus on the sounds because they aren’t as important as l and r * focus on common vowels (not vowel in book /ʊ/)