Psychometricians convert raw scores to a standard scaled score (also called a “sten” or standard ten). For example:
Note: Actual conversion tables vary by test publisher and norm group. Always refer to the specific MD5 manual.
The percentile rank tells you what percentage of the norm group scored below the candidate. A percentile of 75 means the candidate outperformed 75% of the reference population. md5 mental ability test scoring and interpretation
Before diving into scoring, it is critical to understand the test’s structure. The MD5 is typically a timed, multi-domain assessment lasting 20–40 minutes. It comprises five core cognitive pillars, conveniently aligned with the “MD5” acronym:
Each section contains 10–20 items, with total raw scores typically ranging from 0 to 100. The test is normed on a representative sample of the general population, stratified by age and education level. Psychometricians convert raw scores to a standard scaled
Scores in this range indicate an average level of analytical reasoning ability relative to the normative population. While these scores do not suggest deficiency, they may not be sufficient for highly competitive programs unless offset by strong GPA, research experience, or letters of recommendation.
The MD5 has two versions:
Interpretation depends on the standardization of the specific test, but the following classification is standard for most IQ and Mental Ability tests:
| Classification | IQ Range (SD=15) | Percentile Rank | Stanine | Interpretation | | :--- | :--- | :--- | :--- | :--- | | Very Superior | 130+ | 98th+ | 9 | Exceptionally high cognitive ability; capable of handling complex abstract reasoning. | | Superior | 120–129 | 91st–97th | 8 | High cognitive ability; learns quickly and handles abstract concepts well. | | High Average | 110–119 | 75th–90th | 7 | Above-average reasoning; performs well in academic/professional settings. | | Average | 90–109 | 25th–74th | 4, 5, 6 | Normal range; capable of standard learning and problem-solving tasks. | | Low Average | 80–89 | 9th–24th | 3 | Below average; may struggle with complex reasoning but can handle concrete tasks. | | Borderline | 70–79 | 2nd–8th | 2 | Significant difficulties with abstract reasoning; may need support. | | Extremely Low | < 70 | < 2nd | 1 | indicative of potential intellectual disability or cognitive impairment. | Note: Actual conversion tables vary by test publisher