Sentence Completion in a Dual-Language Learner
Ms. Patel, a bilingual coordinator, reviews a 5-year-old, Sofía, who has had 8 months of English instruction and speaks Spanish at home. On 15 English sentence-completion items with picture choices, Sofía answers 9 correctly. Her errors cluster on prepositions (in, under, behind) and less frequent nouns (ladder, kettle). She answers 8 of 10 picture analogies correctly, including function and category relations. A teacher suggests retaining Sofía in a Tier 2 language group because her verbal score is below the class median. The school's policy says kindergarten reasoning screening should not be used alone to place students in special education. Testing was in English with no Spanish translation; the examiner repeated directions twice. Sofía's Spanish vocabulary is age-appropriate per a bilingual aide.
1. What is the most defensible interpretation of Sofía's verbal performance?
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The most defensible interpretation is that Sofía's verbal score is a downward-biased estimate of her reasoning, not a clear language disorder or low verbal ability. Her errors cluster on prepositions and low-frequency nouns, which are precisely the English vocabulary and syntax items most affected by 8 months of exposure. Her 8/10 picture analogies, including function and category relations, show that she can reason with pictured concepts. The sentence-completion format also depends on English oral vocabulary, so a 9/15 score mixes language proficiency with reasoning. The below-median comparison is not meaningful without a bilingual norm or a language-proficiency measure. Testing in English with repeated directions may have helped comprehension but did not remove vocabulary bias.
2. What additional data would reduce misclassification?
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Collect three pieces of data: (1) a Spanish-language or bilingual verbal reasoning probe using the same relation types; (2) a classroom vocabulary measure in both languages; (3) teacher observations of Sofía's use of prepositions and category words in natural play. Also review whether errors were 'I don't know' versus plausible alternatives, which distinguishes vocabulary gaps from guessing. A bilingual aide can administer a parallel picture analogy set in Spanish. If she reasons well in Spanish but not English, the score is a language artifact; if errors persist in both languages on the same relations, further language or cognitive screening is warranted.
3. What recommendation balances language support and avoiding underrating reasoning?
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Recommend continued English language support without using the verbal screening score to place her in special education or a low-ability group. The school should document the English-language bias and use nonverbal and quantitative scores plus classroom evidence for any high-stakes decision. For reasoning screening, allow a bilingual version or interpret verbal scores cautiously for students with under 2 years of English. Provide targeted prepositions and noun vocabulary in meaningful contexts, then re-screen with a parallel form after 6-8 weeks. Avoid retention; it does not address the language exposure issue and may confound reasoning with proficiency.