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.
Organizations 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+ organizations — 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 organizational 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 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 behavioral, 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.
Frequently asked questions about our Aptitude tests
What does the Thomas Aptitude Assessment measure?
It measures five cognitive abilities - reasoning, perceptual speed, number accuracy, word meaning, and spatial visualization - to predict learning speed and problem-solving under pressure.
How long does the assessment take?
Around 45 minutes. It’s delivered fully online, with results available instantly.
How can aptitude tests for employment help with hiring?
By selecting the appropriate type of aptitude test based on the specific skills and capabilities required for the job, employers gain valuable insights into candidates' potential for success in the role. For example, a candidate for a customer services role might be tested on their communication skills and problem-solving ability. These assessments help you make informed hiring decisions, identify training needs, and build high-performing teams tailored to their organizational objectives.
Who should take an Aptitude Assessment (GIA)?
It’s a valuable assessment for most roles - but it is particularly helpful for roles where adaptability, learning agility, and cognitive demands are high - such as senior leadership, sales, tech, customer success, and operations.
Can hiring managers use the results without training?
Yes. The platform is designed for manager usability, and we provide built-in guidance to interpret scores and apply insights. For professional psychometric assessors, Thomas Assess Accredited is also available.
Are the results scientifically validated?
Absolutely. The Thomas Aptitude Assessment is a well-established tool for psychometric assessment, backed by over 40 years of cognitive research. Thomas assessments are also independently validated by a range of professional bodies for fairness, reliability, and predictive power.
Can we combine the Thomas Aptitude Assessment with other assessments?
Yes. In fact, we encourage it to ensure you have a nuanced view of candidate strengths and gaps. Thomas makes it easy to pair aptitude insights with behavioral and emotional intelligence data for a more complete view of candidate potential.
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
