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Assessment items test your ability to match the right standardized test to the right client and interpret basic scores (standard, percentile, age equivalent). Expect 6-8 items.
Nearly every assessment-tools item reduces to matching purpose to instrument type. Screenings identify who needs further evaluation and produce pass/refer outcomes only. Norm-referenced tests answer how a client compares to same-age peers and are what eligibility decisions typically require. Criterion-referenced tests answer whether the client has mastered a specific skill and are what treatment planning and progress monitoring require. Dynamic assessment answers whether the client can learn the skill with support, which is what distinguishes a disorder from a difference.
When a stem describes a bilingual student, a student from a nonmainstream dialect background, or any case where standardization sample representativeness is in doubt, the expected answer moves toward dynamic assessment, language sampling, criterion-referenced measures, and parent or teacher report — not toward a different standardized test.
You need functional command of a handful of concepts. Validity is whether a test measures what it claims: content validity covers the domain, construct validity reflects the underlying trait, criterion validity correlates with an outside standard. Reliability is consistency: test-retest across time, inter-rater across examiners, internal consistency across items. A test can be highly reliable and still invalid for your purpose, and items exploit that asymmetry.
Sensitivity is the proportion of truly disordered clients the test correctly identifies; specificity is the proportion of typically developing clients it correctly clears. Low sensitivity produces false negatives, which is the error that matters most in eligibility screening because a child with a real disorder goes unserved. The standard error of measurement is why scores are reported as confidence bands, and any answer that treats a single standard score as an exact value is usually wrong.
Standard scores on most speech and language tests have a mean of 100 and a standard deviation of 15, so a score of 85 is one standard deviation below the mean and roughly the 16th percentile. Scaled subtest scores usually have a mean of 10 and a standard deviation of 3. Percentile ranks describe relative standing, not percent correct, and they are not equal-interval — the distance between the 5th and 10th percentiles is much larger in raw performance than between the 45th and 50th.
Age-equivalent and grade-equivalent scores are the trap. They are not standardized, they have wide error, and they invite overinterpretation by families and teams, which is why ASHA discourages using them for eligibility. If an answer choice recommends reporting an age equivalent to justify a decision, it is almost certainly the distractor.
Try answering before revealing the rationale — mark misses to retry later.
Q1.The MOST appropriate assessment for a 3-year-old suspected of language delay is:
Correct: B. The PLS-5 assesses birth through 7:11 and covers receptive/expressive language — the appropriate range for a 3-year-old. CELF-5 starts at age 5.
Q2.A bilingual Spanish-English 6-year-old is being evaluated for language disorder. The MOST valid assessment strategy is:
Correct: B. For bilingual children, static English-only norm-referenced testing produces invalid results. Dynamic assessment plus multi-informant report in both languages is the standard.
Q3.Which score type indicates that a child performed better than 15% of the norming sample?
Correct: B. Percentile rank of 15 means the child scored better than 15% and below 85% of the norming sample. Standard score 100 = 50th percentile.
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Are age-equivalent scores useful?
They are easy to communicate but not psychometrically sound. Use percentiles or standard scores for clinical decisions.
Can I translate an English test into Spanish?
No — translation invalidates norms. Use assessments specifically normed on the target population, or dynamic assessment.
What is dynamic assessment?
A test-teach-retest approach that measures learning potential and helps distinguish language disorder from language difference.