What term refers to consistent errors in learners' language output that indicate they are constructing a system for understanding and producing language?

• A. Systemic knowledge
• B. Systematic errors
• C. Syntagmatic relations
• D. Top-down processing

Answer: (B)

Systematic errors are the recurring, patterned mistakes that signal a learner is forming a rule-governed system for how the language works. When a learner consistently applies a general rule in new contexts—like adding a regular past tense to all verbs or overgeneralizing a definite article—these mistakes aren’t random slips; they reflect the learner testing and refining hypotheses about grammar. This developing, intermediate system of rules between the learner’s first language and the target language is often called an interlanguage, and the presence of systematic errors shows that the learner is actively constructing that internal model of how the language should operate.

This idea is different from the other concepts: syntagmatic relations describe how elements line up in sequences, not the existence of an emerging rule system reflected in errors; and top-down processing is about using higher-level knowledge to interpret input, rather than producing patterned errors that reveal underlying grammar. So the term that best captures this phenomenon is systematic errors.