As a screening filter
The most common use case is a hard cutoff. Below the cutoff, the application ends. This is especially common at large employers with mature hiring infrastructure because it scales well: one cutoff rule applied to thousands of applicants requires no human judgment.
Screening filters are usually calibrated to the vendor default for the role family, with occasional customization based on the employer's internal data. The exact cutoff is rarely disclosed, but the role-family bands published by vendors give reasonable estimates.
As a ranking tool
Some employers rank all applicants by score and invite the top N for interview, where N is usually a small multiple of the number of hires they plan to make. Under this model, scoring at the median is not enough because only the top tier advances.
Ranking usage is common at highly competitive employers where the applicant pool is large relative to the hire target. Top consulting, top investment banking, and selective tech roles frequently use this approach. The takeaway for candidates: the cutoff that matters in practice is the Nth-ranked applicant, not the vendor default.
As a composite input
Modern ATS systems often combine cognitive test score with resume fit, interview ratings, and reference checks into a weighted composite. The weighting varies by employer: some weight cognitive heavily (25 to 50 percent of the final score), others weight it lightly (10 to 15 percent).
Composite usage softens the impact of a weak cognitive score because other factors can compensate. It also means a stellar cognitive score does not guarantee a hire if other components are weak. The practical effect for candidates is that reasonable cognitive performance plus strong performance elsewhere beats stellar cognitive performance alone.
For role placement
Some employers use cognitive test scores not just for hire or no-hire decisions but to route candidates to different role tiers. A candidate scoring at the 80th percentile might be routed to an accelerated track, while one at the 60th percentile might go to the standard track. Both are hires, but the roles differ in intensity.
This is most common at employers with internal job families that cluster by cognitive demand. Large consulting firms and some tech companies use this approach to match candidates to appropriate rotations or teams.
For legal defense
Validated cognitive tests provide legal protection against discrimination claims. Employers can point to standardized, objective test criteria as defense in a dispute, whereas interview-based decisions are harder to defend because they involve subjective judgment.
This legal-defense use case explains why many employers keep cognitive tests in their process even when other criteria would be enough. The test is insurance. It also explains why employers rarely disclose cutoffs: detailed disclosure could create attack surface for disparate-impact claims.
What this means for prep
If the employer uses the test as a hard cutoff, prep to comfortably clear the cutoff. Going much above the cutoff adds no value, and the time invested in pushing from the 85th to the 95th percentile is better spent elsewhere.
If the employer uses ranking, prep to the top N. This usually means pushing toward the 90th or 95th percentile because the top of the applicant pool is crowded.
If the employer uses a composite, prep the test to clear a respectable score and invest the saved time in interview prep, resume polishing, and portfolio work. A balanced candidate profile wins under composite scoring.
If you do not know which model the employer uses, assume ranking unless you have evidence otherwise. The cost of preparing for ranking and facing a cutoff is zero. The cost of preparing for a cutoff and facing ranking is real.