NCE content area

NCE Assessment and Testing

Last updated September 29, 2026 · Published by Counseling Exam Assist

Short answer

This NCE area covers reliability and validity, norm- vs criterion-referenced tests, standard scores (z, T, percentile, stanine), the normal curve, and common instruments such as the MMPI-3, WAIS-V, BDI-II, and Strong Interest Inventory. It's one of the most-missed areas.

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Key concepts to know

ConceptWhat to remember
Normal curve68% within ±1 SD, 95% within ±2 SD, 99.7% within ±3 SD.
Standard scoresz: mean 0, SD 1. T: mean 50, SD 10. IQ: mean 100, SD 15. Stanine 1–9, mean 5.
ReliabilityTest-retest, alternate forms, split-half, internal consistency (Cronbach's alpha), inter-rater.
ValidityContent, criterion (concurrent, predictive), construct (convergent, discriminant).
SEMStandard error of measurement builds a confidence band around an obtained score.
InstrumentsMMPI-3 (personality/psychopathology), WAIS-V (adult IQ), WISC-V (child IQ), BDI-II (depression).

Common traps on this section

  • Thinking a test can be valid without being reliable (reliability is necessary but not sufficient).
  • Mixing up T-score and z-score scales.
  • Treating a percentile as a percentage of items answered correctly.

Sample NCE question

A client scores a T-score of 70. How many standard deviations above the mean is this?

  1. 1
  2. 2
  3. 3
  4. 0.7
Show answer

2. T-scores have a mean of 50 and SD of 10, so 70 is two standard deviations above the mean.

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Frequently asked questions

Why do people struggle with assessment on the NCE?

It mixes statistics with instrument recall. Most misses come from score conversions and reliability-vs-validity distinctions, which improve quickly with practice questions.

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