Phonological
Morphological
Syntactic
Semantic
Pragmatic
100

Rules of language that govern the sound structure of syllables and words

Phonological development

100

The smallest meaningful units of language

morpheme

100

The type of statement that asks a question

interrogative

100

Learning and storage of the meanings of words

semantic development

100

Acquiring the rules of language that govern how language is used as a social tool

pragmatic development

200

word and syllable stress patterns or the rhythm of language

prosodic cues

200

Internalization of the rules of language that govern word structure

morphological development

200

Talk directed to children

child-directed speech

200

This consists of the total number of words a person can use or understand

lexicon

200

Instances when caregivers and infants focus on a mutual object

joint attention

300

An influence of phonological development related to how often children hear others speak their native language

phonological exposure

300

Morphemes that, when added to a root word, change the syntactic class and semantic meaning

derivational morphemes

300

Language disorders that are present at birth

developmental language disorders

300

This describes the how words are organized by the connective ties among them

semantic network

300

The intention behind every utterance

communication function

400

This describes a child’s internal representation of the sounds of their native language

phonetic inventory

400

A type of morpheme that can also be a word, such as like or made

free morpheme

400

Internalization of the rules of language that governs how words are organized into sentences

Syntactic development

400

A way of differentiating words by their semantic roles

semantic taxonomy

400

Internalized representations of the organizational structures of various events

schema

500

The ability to attend to the phonological units of speech through implicit or explicit analysis

phonological awareness

500

Variants of a single language

dialect

500

A measure of the average number of morphemes a child produces per utterance

Mean Length of Utterance

500

Situations in which a lot of contextual information is provided about a novel word 

ostensive word-learning contexts

500

A theory that proposes that children’s experiences using language to engage with other people fosters their development of form and content

intentionality hypothesis

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