Aptitude Tests & Assessments for Employers
Hire for performance potential with Aptitude Assessments
Predict performance, reduce risk, and personalise onboarding with data on how candidates think, learn, and solve problems - before they join your team.
Organisations using Thomas Aptitude Assessments have achieved:
- Faster time-to-hire by quickly identifying candidates with the right cognitive abilities and potential
- Reduction in early-stage attrition
- Increase in ramp-up speed for new hires, with faster learning in role
Used by 10,000+ businesses globally | ISO-certified | Backed by over 40 years of psychometric research
Trusted by 10,000+ organisations — from high-growth startups to global enterprises
Used across sectors like SaaS, financial services, and professional services to reduce hiring costs and improve onboarding outcomes - backed by over 40 years of providing organisational psychology.
What is an aptitude assessment?
The Thomas Aptitude Assessment (GIA) assesses fluid intelligence - the part of your IQ that defines learning agility - or how quickly you can learn, adapt, and succeed in-role.
It measures five key areas that impact workplace performance:
Reasoning – logical decision-making
Perceptual speed – attention to detail and learning agility
Number speed and accuracy – comfort with numerical data
Word meaning – verbal reasoning and communication
Spatial visualization – abstract thinking and data structuring
Our Aptitude Assessment takes just 8 minutes to complete and delivers clear, visual results - so hiring managers can act on the data to find the best fit.
Available on the Thomas Assess platform, you can combine it with behavioural, emotional intelligence, and personality assessments for a complete view of candidate potential.
One assessment. Five cognitive signals. Better hiring decisions across every function.
Why use Aptitude Assessments?
CVs show what someone’s done. Interviews show how well they tell their story. But do either show you how they think, learn, or solve problems?
If you’re hiring for today’s fast-moving world, experience alone isn’t enough. You need to know who can adapt, keep up, and learn at speed.
Aptitude assessments (also known as General Intelligence Assessments or GIA) give you clear, objective insight into fluid intelligence - how quickly we learn and process new information. It’s a powerful predictor of future performance, especially for roles in complex, fast-paced environments.
Used by teams around the world to:
Predict learning speed, adaptability, and problem-solving under pressure.
Make faster, more confident hiring decisions.
Shorten onboarding timelines and improve early-stage productivity.
Equip your people with the data to make the right call - first time.
How Aptitude Assessments work in Thomas Assess
When you're hiring at scale, speed and confidence matter. Thomas Aptitude Assessments are built to give your teams fast, predictive insights in an intuitive format - without adding complexity.
In just a few clicks, you can:
- Select the Thomas Aptitude Assessment and choose if you want to combine it with Behavioral and EI assessments for a complete candidate profile.
- Invite candidates directly or through your ATS.
- Assess fully online, with no technical setup.
- Review instant, visual results that managers can easily interpret.
Act with confidence - the data provided gives you an unbiased view of candidate strengths, gaps, and development potential.
Fast, flexible Aptitude Assessments built for scale
Thomas assessments are built for enterprise agility - so your teams can make confident, data-led decisions without delays or dependencies.
What you can expect:
- Fully browser-based - no installs, no IT bottlenecks
- Easily combines with other assessments for deeper insight
- Instant results, ready for action
Trusted, tested, and backed by science
Every Thomas assessment is grounded in over four decades of psychometric research and built to meet the highest scientific and ethical standards.
- Independently audited by the British Psychological Society for reliability, fairness, and predictive accuracy
- Regularly reviewed for accuracy by internal psychometricians and external experts
- Built on established psychological models, including GIA and DISC
- ISO-certified processes for assessment delivery and data handling
From insight to action with Thomas Assess
The Aptitude Assessment doesn’t just deliver assessment data - it can help you turn insight into action across your hiring, onboarding, and development workflows.
What you can do with Thomas Aptitude Assessment insights:
- Build onboarding plans based on learning speed and cognitive strengths
- Set role-specific development goals based on your insights
- Compare individual results to your own role profile benchmarks
Recruit to fill gaps in your team’s existing skills
Why Thomas is different
Many assessment tools deliver data. Thomas delivers decisions—fast, scalable, and backed by science.
Find out how Thomas can help you reduce costs and accelerate performance
Organizations using Thomas aptitude assessments report:
- Faster time-to-hire by quickly identifying candidates with the right cognitive abilities and potential
- Reduction in early-stage attrition
- Increase in ramp-up speed for new hires, with faster learning in role
Give your managers the insight to make smarter, faster hiring decisions—powered by proven science and enterprise-ready technology.
Used by 10,000+ companies | ISO certified | Validated by BPS
Workplace Aptitude Assessment FAQs
What does the Thomas Aptitude Assessment measure?
The Thomas Aptitude Assessment measures fluid intelligence, which is how quickly someone can learn, adapt, and solve problems at work. Employers use this insight to predict performance in roles that require learning agility, critical thinking, and problem solving.
How long does the Aptitude Assessment take?
The assessment is completed online and typically takes a short amount of time to finish. This makes it suitable for use within recruitment and development processes without slowing down hiring decisions.
How can aptitude tests for employment support hiring decisions?
Aptitude tests help employers understand how candidates think and learn, not just what they already know. This allows hiring teams to reduce risk, improve quality of hire, and make more objective decisions based on cognitive ability rather than experience alone.
Who should take a workplace aptitude assessment?
Workplace aptitude assessments are commonly used with job candidates, new hires, and existing employees. Employers use them to support recruitment, onboarding, development planning, and succession decisions across a wide range of roles.
Can hiring managers use the results without specialist training?
Yes. Results are presented in a clear, visual format designed for hiring managers and people leaders. This makes it easy to interpret insights and apply them during interviews, onboarding, and development conversations.
Are aptitude assessment results scientifically validated?
Yes. The Thomas Aptitude Assessment is scientifically validated and built on decades of psychometric research. It meets recognised standards for reliability and validity in workplace assessment.
Can the Aptitude Assessment be combined with other Thomas assessments?
Yes. Employers can combine the Aptitude Assessment with behavioral, personality, emotional intelligence, and 360 degree feedback assessments to gain a more complete view of candidate or employee potential.
