A school-age child has difficulty understanding structural prefixes, suffixes, and root words. Which domain of language is primarily affected?

• A. Pragmatics
• B. Morphology
• C. Phonology
• D. Syntax

Answer: (B)

Morphology is about how words are built from smaller meaningful pieces. When a child has trouble with prefixes, suffixes, and root words, they're showing difficulty with morphological awareness—the ability to analyze and construct words by combining morphemes. This matters because prefixes like un-, re-, and dis- and suffixes like -ed, -ing, -ness change meaning or grammatical function, and root words carry the core meaning.

For example, in a word like unhappy, you can see the root word happy plus the prefix un-, which flips the meaning. In another case, adding -ness to happy creates a noun form that expresses a state. Understanding these parts helps with decoding, vocabulary growth, and spelling.

This concept is distinct from phonology (sound systems and pronunciation) and syntax (how words are arranged in sentences), and from pragmatics (how language is used socially).