PD - Week 4 (09-14-26) Phonological Development and Theoretical Frameworks

Practice vocabulary flashcards for speech-language pathology students reviewing theoretical phonology frameworks, distinctive features, developmental prelinguistic stages, phonological processes, and metaphonological skills.

Distinctive Feature Theory

A theoretical framework stating that speech sounds are composed of individual sound components that distinguish phonemes from each other based on the presence (+$) or absence (-$$) of specific properties.

Generative Phonology

A phonological theory that focuses on deep structure versus surface structure and describes an underlying set of formal rules governing how sounds can be combined.

Phonological Representation (Deep Structure)

The underlying, abstract cognitive knowledge and mental representation of speech sound rules within generative phonology.

Phonetic Representation (Surface Structure)

The actual physical, acoustic output and concrete motor production of speech sounds in generative phonology.

Competence

The deep, underlying knowledge of the phonological rules of a language, exemplified clinically by auditory discrimination.

Performance

The surface-level actual production and use of speech and language in real communicative situations.

Unmarked Sounds

Sounds that are natural, easier to articulate, developed earlier by children, and found with high frequency across world languages.

Marked Sounds

Sounds that are less natural, motorically more complex, developed later, and occur less commonly across world languages.

Implicational Universals

A principle where the presence of a more complex (marked) sound class in a language or inventory predicts and implies the presence of less complex (unmarked) sound classes; forms the foundation of the complexity approach.

Natural Phonology

A theory explaining typical phonological development as an innate, universal system of simplification patterns (processes) that children progressively revise and suppress toward adult speech.

Limitation (Natural Phonology)

A mechanism in natural phonology where phonological differences and process substitutions become restricted to specific sounds or specific sound classes over time.

Ordering (Natural Phonology)

A developmental characteristic where early substitutions that appear random or unordered gradually organize into consistent, rule-governed patterns.

Suppression (Natural Phonology)

The developmental inhibition and elimination of previously active phonological processes as a child matures toward adult-like speech.

Sonority Theory

A phonological framework used in the complexity approach that describes the inherent loudness of a sound relative to other sounds, determined by vocal tract openness (higher sonority) versus constriction (lower sonority).

Sonorant

A major class feature describing speech sounds produced with an open vocal tract configuration that facilitates continuous, spontaneous voicing.

Consonantal

A major class feature characterizing speech sounds produced with a true physical obstruction or constriction along the vocal tract.

Approximant

A major class category encompassing liquids and glides, characterized by a degree of vocal tract constriction without generating turbulent friction.

Coronal

A cavity (place) feature indicating sounds produced by raising the blade of the tongue, including alveolars and $[l]$.

Anterior

A cavity (place) feature designating sounds produced in the front portion of the oral cavity at or in front of the alveolar ridge, such as $[m]$, $[n]$, and $[b]$.

Distributed

A cavity (place) feature denoting sounds produced with a long constriction along the direction of airflow, such as $[sh]$, $[s]$, and $[z]$.

Continuant

A manner feature characterizing sounds produced with continuous airflow without complete blockage of the oral cavity, including vowels, fricatives, liquids, and glides.

Delayed Release

A manner feature specific to affricates, where complete closure of the vocal tract is followed by a slow, friction-producing release.

Phoneme

The smallest unit of sound that, when arranged in specific ways, contains meaning, changes meaning, and distinguishes contrastive meaning between words.

Primary Functions (Speech Mechanism)

The life-supporting biological functions of the vocal tract, such as breathing, sucking, and swallowing, which prioritize survival in early infancy.

Secondary Functions (Speech Mechanism)

The articulatory and expressive communicative functions of the vocal tract, such as speech sound production and expressive language, which develop after biological adaptations.

Categorical Perception

The perceptual phenomenon occurring between $1$ and $3\text{ months}$ of age where infants perceive speech sounds according to native language categories while still retaining sensitivity to non-native phonetic contrasts.

Perceptual Constancy

The auditory ability to recognize and identify the same speech sound across variations in different speakers, pitches, and acoustic environments.

Prelinguistic Stage 1

The developmental stage spanning $0\text{ to }2\text{ months}$, characterized by reflexive crying and vegetative sounds.

Prelinguistic Stage 2

The developmental stage spanning $1\text{ to }4\text{ months}$, characterized by cooing, laughter, and controlled phonation.

Prelinguistic Stage 3

The developmental stage spanning $3\text{ to }8\text{ months}$, characterized by vocal play or expansion with variations in pitch and volume.

Prelinguistic Stage 4

The basic canonical babbling stage spanning $5\text{ to }10\text{ months}$, comprising reduplicated babbling, non-reduplicated (variegated) babbling, and early imitative behavior.

Reduplicated Babbling

A form of canonical babbling featuring repeated consonant-vowel syllable strings with identical consonants and vowels, such as 'bababa'.

Non-reduplicated (Variegated) Babbling

A form of canonical babbling featuring varying consonants and vowels across successive syllable strings.

Prelinguistic Stage 5

The advanced forms stage spanning $9\text{ to }18\text{ months}$, characterized by jargon and the emergence of first words.

Jargon

Advanced prelinguistic vocalizations produced in strings of syllables characterized by adult-like intonation, pitch, and rhythm without recognizable words.

Contoid

A consonant-like production that approximates an adult consonant without fully reaching the adult phonological target.

Vocoid

A vowel-like production that approximates an adult vowel without fully matching the adult phonetic form.

First Word (Owens, 2016)

An entity of relatively stable phonetic form that is produced consistently by a child in a particular context and is recognizably related to the adult-like form of a particular language.

Item Learning

The early stage of word acquisition where a child learns whole word units directly tied to specific objects before acquiring rules about their internal sound components.

System Learning

The word-learning stage where a child understands that individual sounds within words follow general phonemic rules and convey distinct contrastive meanings.

Phonetic Variability

The unstable, fluctuating pronunciations of words and varying syllable shapes (e.g., CV, VC, CVC) observed during early speech acquisition.

Speech Sound Development Chart (Sander, 1972)

A normative developmental reference where horizontal bars represent the typical age ranges (from $2\text{ to }8\text{ years}$) for customary production and mastery of English consonants.

Longitudinal Study

A research methodology that tracks the same group of children over an extended period of time to document developmental milestones and sound acquisition patterns.

Cross-Sectional Study

A research design that samples different age cohorts at a single point in time to provide a comparative snapshot of speech sound mastery.

Phonological Regression

A phenomenon where accurate speech sound productions are temporarily replaced by inaccurate ones when language complexity or syntactic demand increases.

Cluster Reduction

A syllable structure process involving the deletion of one or more consonants from a consonant cluster (e.g., producing $[tap]$ for 'stop'), typically suppressed around $4\text{ years}$ of age.

Final Consonant Deletion

A syllable structure process resulting in an open syllable through the omission of the final consonant, typically suppressed between $2\frac{1}{2}\text{ and }3\text{ years}$ of age.

Weak Syllable Deletion

A syllable structure process where an unstressed syllable in a multisyllabic word is omitted, typically suppressed around $4\text{ years}$ of age.

Epenthesis

A phonological process involving the insertion of an intrusive sound—most frequently a schwa—into a consonant cluster or word.

Stopping

A substitution process in which a stop consonant replaces a fricative or an affricate (e.g., producing $[pon]$ for 'phone').

Fronting

A substitution process in which velar or palatal consonants are replaced by alveolar consonants (e.g., producing $[taendi]$ for 'candy'), typically suppressed between $3\frac{1}{2}\text{ and }4\text{ years}$ of age.

Gliding

A substitution process where liquid consonants ($[l]$, $[r]$) are replaced by glides ($[w]$, $[j]$), which can normally persist up until $7\text{ years}$ of age.

Velar Harmony

A regressive assimilation process in which an anterior consonant is replaced by a velar consonant due to the influence of a nearby velar sound (e.g., $[gag]$ for 'dog'), which should cease after $2\text{ years}$ of age.

Contrastive Stress

A prosodic feature where acoustic emphasis and duration are varied across specific words within an utterance to signal functional differences in meaning.

Morphophonology

The study of the interrelationship between phonology and morphology, detailing how sound patterns affect morphological structures like plural and tense markers.

Metaphonology

The conscious cognitive awareness of the sounds within a language, including the ability to identify the number of sounds and recognize initial and final sounds in words.

Phonological Processing

The cognitive use of phonological information and sound structures to process oral and written language.

Phonological Awareness

The auditory-based meta-linguistic ability to recognize, attend to, and manipulate larger sound structures of spoken language, including whole words, syllables, and rhymes.

Phonemic Awareness

The specific subcategory of phonological awareness that involves recognizing and manipulating spoken language at the level of individual phonemes through detection, matching, isolation, blending, and segmentation.