6.2 Morphology: Roots and Affixes

ALTA Competency Exam for Multisensory Structured Language Education CALT

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1 Introduction & Exam Overview

1.1 Current Exam Facts 1.2 Eligibility and Therapy-Level Training 1.3 Registration, Prometric, and Study Plan

2 Language Development: Oral and Written Continuum

2.1 Oral-to-Written Language Continuum 2.2 Receptive and Expressive Oral Language 2.3 Receptive and Expressive Written Language

3 Language Development: Phonological Processing & Research

3.1 Atypical Literacy Development and Remediation 3.2 Phonological Processing Components 3.3 Research on Language Development

4 Structural Linguistics: Phonology

4.1 Continuum of Phonological Skills 4.2 Phonemes, Graphemes, and Morphemes 4.3 Articulatory Gestures

5 Structural Linguistics: Alphabetic Principle & Syllables

5.1 Alphabetic Principle and Sight-Word Recognition 5.2 Six Syllable Types 5.3 Syllable Division Patterns

6 Structural Linguistics: Accent, Morphology & Orthography

6.1 Accent Placement and Sound-Symbol Influences 6.2 Morphology: Roots and Affixes 6.3 Orthography, Affixing Rules, and Etymology

7 Structural Linguistics: Syntax, Semantics & Comprehension

7.1 Syntax, Sentence Structure, and Punctuation 7.2 Semantics and Pragmatics 7.3 Comprehension Strategies and Text Structures

8 Structural Linguistics: Written Language & Research

8.1 Handwriting and the Writing Process 8.2 Research on Structural Linguistics

9 Dyslexia: Definition, Brain & Neurology

9.1 Defining Dyslexia and Instructional Impact 9.2 Brain Anatomy and the Reading Network 9.3 Neurological Aspects of Learning Disabilities

10 Dyslexia: Related Issues, Comorbidity & History

10.1 Behavioral, Social, and Emotional Issues 10.2 Comorbid Disorders 10.3 Historical Pioneers in Dyslexia

11 Dyslexia: Research & Executive Function

11.1 Research on Dyslexia and Related Disorders 11.2 Executive Function and Dyslexia

12 Psychoeducational Assessment: Foundations

12.1 Assessment Terminology and Purposes 12.2 Essential Components of a Dyslexia Evaluation 12.3 Formal and Informal Assessment Instruments

13 Psychoeducational Assessment: Interpretation & Error Analysis

13.1 Interpreting Standard Scores, Percentiles, and Stanines 13.2 Using Results to Guide Services 13.3 Error Analysis of Work Samples 13.4 Psychoeducational Research

14 MSL Strategies: Multisensory, Systematic & Analytic

14.1 Simultaneous VAKT Multisensory Strategies 14.2 Systematic and Cumulative Instruction 14.3 Synthetic vs Analytic Instruction

15 MSL Strategies: Direct Instruction, Automaticity & Diagnosis

15.1 Direct vs Indirect Instruction 15.2 Automaticity in Literacy Development 15.3 Diagnostic Teaching

16 MSL Strategies: Program Principles & Theoretical Models

16.1 MSLE Program Content and Principles 16.2 Metacognition and Learning Environments 16.3 Simple View of Reading 16.4 Scarborough's Reading Rope

17 Federal Laws: IDEA, Section 504 & ADA

17.1 Federal Disability Law Landscape 17.2 Federal Eligibility Guidelines 17.3 Documentation Decisions and Accommodations 17.4 Historical Development of Disability Law

18 Professional Ethics: ALTA Code of Ethics

18.1 ALTA Code of Ethics Overview 18.2 Confidentiality, Competence, and Credentials 18.3 Ethical Standards with Parents and Colleagues

19 Professional Communication

19.1 Professional Student Reports 19.2 Strengths- and Needs-Based Language 19.3 Communicating with Parents, Students, and Colleagues

6.2 Morphology: Roots and Affixes

Key Takeaways Explain This Topic AI

Morphemes are the smallest meaning units; words are counted by morphemes, which may differ from syllable count.

Free morphemes stand alone; bound morphemes (affixes and many classical roots) must attach to another form.

Prefixes mainly alter meaning; suffixes are inflectional (grammar) or derivational (new words/part of speech).

Root and affix study builds decoding chunks, spelling stability, and generative academic vocabulary.

MSLE morphology lessons break, build, sort, and transfer—always checking that a supposed affix carries real meaning.

Last updated: July 2026

Morphology is the study of morphemes —the smallest units of meaning in language—and of how those units combine. Domain objectives 2.D.2–2.D.3 ask CALT candidates to identify roots and affixes, distinguish inflection from derivation, and explain how morphological knowledge supports reading, spelling, and vocabulary. In MSLE, morphology is not an “enrichment” add-on after phonics; it is a core structural strand that grows denser as words grow longer.

Morphemes: The Meaning Atoms

A morpheme carries meaning or grammatical function. Words may contain one morpheme ( dog , run ) or several ( un-help-ful , re-view-ed ). Count morphemes by meaning units, not by syllables: cats has two morphemes ( cat + plural -s ) but one syllable; elephant has one morpheme but three syllables.

• Morpheme type Definition Examples
• Free morpheme Can stand alone as a word book , run , happy
• Bound morpheme Must attach to another morpheme un- , -ed , -ology , struct
• Root / base Core meaning unit of a word family struct in construct , structure
• Affix Bound morpheme attached before or after a base prefixes and suffixes

Terminology nuance used on exams and in therapy manuals:

Base word often means a free-standing English word to which affixes attach ( help in helpful ).

Root often means a bound classical form that may not stand alone in modern English ( rupt in disrupt , spect in inspect ).

Stem is sometimes used for the form existing before a particular affix is added.

Use the program’s labels consistently with students; for the ALTA exam, focus on the structural roles.

Affixes: Prefixes and Suffixes (2.D.2)

Prefixes attach before a base and usually change meaning without changing word class as often as suffixes do: un- (not), re- (again), pre- (before), mis- (wrongly), dis- (opposite/away), in-/im-/il-/ir- (not), trans- (across).

Suffixes attach after a base. Split them clinically into:

Inflectional suffixes — mark grammar without creating a new dictionary word class identity in the same way derivation does. English has a small closed set, including noun plural -s/-es , possessive -’s , third-person singular -s , past tense -ed , progressive -ing , comparative -er , superlative -est . They are highly productive and typically do not change part of speech ( walk → walks , walked , walking ).

Derivational suffixes — build new words, often changing part of speech or nuanced meaning: -er (agent: teach → teacher ), -ness (adjective → noun: kind → kindness ), -ly (adjective → adverb), -tion/-sion , -able/-ible , -ous , -ive , -ology .

A single surface form can be ambiguous ( -er comparative vs. agentive). Context and meaning resolve the analysis—another reason morphology lessons stay meaning-centered.

Roots and Word Families (2.D.3)

Teaching roots builds generative vocabulary. If a student learns Latin spect/spec (look), the family inspect , spectator , respect , perspective , spectacle becomes analyzable. Greek phon (sound) unlocks telephone , phonics , symphony , microphone . Anglo-Saxon bases remain central for early grades ( hand , water , night ), while Latin and Greek layers dominate academic text—the same etymological map revisited in Section 6.3.

Effective root instruction is:

• Cumulative — a few high-utility roots deeply, not dozens superficially
• Multisensory — card decks, color-coding affixes vs. roots, oral “build/break” drills

Connected to spelling — stable root spelling often explains letter choices that phonics alone cannot ( sign keeps g because of signal , signature )

• Connected to comprehension — students paraphrase after analyzing ( retract = draw back)
• Morphology Supports the Reading Rope Strands

Morphological awareness contributes to both word recognition and language comprehension:

Decoding/encoding: Recognizing -ed as a unit prevents letter-by-letter struggles in jumped ; recognizing inter- helps chunk international .

Vocabulary: Affix + root analysis yields approximate meanings for unfamiliar academic words—critical for middle school content areas.

Syntax awareness: Inflections cue number, tense, and comparison inside sentences.

Spelling stability: Morphology often overrides pure sound matching ( health related to heal ; musician related to music ).

For students with dyslexia, morphological instruction is compensatory and preventive: longer words become structured objects rather than opaque letter strings.

Therapy Look-Fors and Common Confusions

Confusing syllables with morphemes. Butter has two syllables and (typically) one free morpheme; replayed has two syllables and three morphemes ( re- , play , -ed ). CALT questions love this contrast.

Over-segmenting. Not every letter sequence that looks like a prefix is one ( uncle is not un- + cle ). Teach “meaning check”: if removing the supposed affix leaves nonsense unrelated to the word, it is not a productive affix in that item.

Under-teaching bound roots. Older struggling readers need Latin/Greek combining forms even if early Orton-Gillingham stages emphasized Anglo-Saxon phonics first. Scope and sequence should escalate.

Sample Lesson Moves

Break it. Student divides unhappiness into un- / happy / -ness and states each meaning.

Build it. Given cards spect , in- , -ion , student builds inspection and uses it in a sentence.

Sort it. Sort suffixes into inflectional vs. derivational; justify with part-of-speech change or lack thereof.

Transfer. In content reading, flag a multisyllabic word, analyze morphemes before guessing from context alone—then confirm with context.

Exam Application

Expect items that ask which knowledge helps a student unlock anthropomorphic , how many morphemes appear in an affixed word, or what a given Latin root means in a family. The best answers name roots and affixes as meaning units and describe instruction that is systematic, cumulative, and meaning-based—the MSLE signature—rather than memorizing whole academic words as unrelated sight items.