Criteria Corp vs SHL: Cognitive Assessments Compared
The short version
Criteria Corp and SHL are the two most-cited vendors when teams shop for cognitive ability testing. Both have decades of validation research, both are accepted by enterprise procurement and most regulators, and both publish technical manuals you can actually read.
The differences come down to test design philosophy, the candidate experience, and the broader product context each vendor wraps around the cognitive test. This post compares the cognitive offerings directly and notes where a platform like ClarityHire — which does not ship a cognitive ability test of its own — fits in the same hiring loop.
The flagship tests
Criteria Cognitive Aptitude Test (CCAT). 50 questions, 15 minutes. Mixed verbal, math, spatial, and logic items. Single composite score plus subscores. Adaptive item bank to limit cheating across retakes.
SHL Verify Interactive G+. Adaptive cognitive ability test, ~24 minutes. Verbal, numerical, and inductive reasoning combined into a general mental ability (g) score. Item Response Theory–driven adaptation that adjusts difficulty live.
Both produce a g-loaded score that correlates with on-the-job performance at roughly the same level — validity coefficients of 0.50–0.65 against supervisor performance ratings, in line with the long-standing meta-analytic findings for cognitive ability tests.
Test design philosophy
Where they diverge:
CCAT is timed and breadth-focused. All candidates get the same 50-item form (with randomized item pulls from a large bank). 15 minutes is short; speed is part of the construct. Reviewers see percentile rank against role-specific norm groups.
Verify is adaptive and depth-focused. The test gets harder as the candidate answers correctly, and easier as they miss. Fewer items but more efficient measurement of ability across the range. Less affected by guessing.
For high-volume hourly hiring, CCAT's fixed form and 15-minute footprint are operationally simpler. For knowledge-worker hiring where you care about discriminating among strong candidates, adaptive tests like Verify Interactive give you more signal at the top of the distribution.
Item types
- CCAT. Mostly text-based, multiple choice. Verbal analogies, math word problems, logic puzzles, basic spatial reasoning.
- SHL Verify. Multimedia. Numerical items use embedded tables and charts. Inductive reasoning uses visual pattern items. Verbal uses passages closer to workplace reading.
SHL's items look more like the actual job for most knowledge-worker roles. CCAT's items look more like a traditional aptitude test. Whether that matters to you depends on whether your hiring managers buy in to "office-like" stimulus material as more face-valid.
Cheat resistance
Both vendors handle the cheat-prevention problem differently:
- CCAT uses a large item bank with randomization, plus a separate "Verify" follow-up form that is given live to confirm scores when the unproctored result is unusual.
- SHL Verify is adaptive (so no two tests are identical) and offers an optional "Verify-Plus" proctored re-test for confirmation.
In practice, both still recommend an in-process retest or a live follow-up interview before basing hire decisions on a cognitive score alone — especially for senior roles where the candidate has more incentive to outsource.
Candidate experience
- CCAT is widely disliked by candidates for the time pressure. The 15-minute limit on 50 items is brutal, and the test is sometimes used as a one-shot reject-or-pass screen, which compounds the experience problem.
- SHL Verify is generally rated more positively. Adaptive testing means weaker candidates spend less time on items they cannot solve, and the test typically takes 18–24 minutes rather than a hard 15-minute sprint.
Neither test is fun. For a public glassdoor-grade candidate experience, you want the cognitive test to be one stage among several, with clear context for why you're using it.
Pricing and packaging
Both are mid-market to enterprise. Neither publishes pricing publicly.
- Criteria Corp sells in annual subscription tiers with bundled test usage. Small organizations can start around $5–10k/year; enterprise pricing scales by hires or by tests.
- SHL is enterprise-priced with custom contracts. Implementation usually requires onboarding from an SHL consultant. Total cost of ownership is typically higher than Criteria.
For a 50-person engineering team running cognitive on every offer, Criteria is the more accessible starting point. For a 5,000-person enterprise integrating cognitive across multiple functions, SHL's broader catalog and consulting model often wins the bake-off.
How ClarityHire fits with both
ClarityHire is not a competitor to Criteria or SHL on cognitive testing — we do not ship a g-loaded cognitive ability test. ClarityHire focuses on technical assessments, live coding interviews, behavioral interview scorecards, and the integrity layer that wraps both.
The natural configuration we see at customer teams:
- CCAT or SHL Verify for the cognitive screen (one or the other, not both)
- ClarityHire technical assessment for the role-specific skill check
- ClarityHire live coding + behavioral for the deeper rounds
- Combined scoring in a single scorecard
Cognitive ability is one of the most predictive single signals you can measure. It just is not the only one, and it does not tell you whether the candidate can actually do the job. The pairing produces better hires than either piece alone.
Which one to pick
- Pick Criteria Corp if: high-volume hiring, mid-market budget, you want a simple fixed-form cognitive test, you do not need broad personality or behavioral assessment in the same vendor.
- Pick SHL if: enterprise scale, multi-function deployment, you want adaptive testing and broader behavioral content, budget for consulting-led implementation.
- Use ClarityHire on top of either if: you hire engineers, product managers, or other roles where a role-specific skill assessment plus live coding/interview produces signal that cognitive alone does not.
See also: our validity-focused comparison and our pricing and ROI breakdown.