Workable's cognitive assessments follow a standardized approach for scoring.
To complete the profile of a candidate, their scores are compared to the average value of the scores from a comparison group. The comparison group (or "norm group") is represented by candidates sitting the same test who all have similar education/experience, or by current job holders.
Norms are constantly being updated to assure that each candidate is compared to an up-to-date and relevant sample. Scores are presented in T-score format.
A T-score is a standardized test score with a mean of 50 and a standard deviation of 10. It is a linear scale with equal units of measure. T-scores can be processed in a mathematical way and give results that can be compared (e.g. mean).
In the above T-score scale, the candidate was on the low end at 20. If the T-score was 50 then they would have performed at the average level compared to the norm group.