Behavioural assessments
Hire smarter. Build stronger teams with behavioural assessments that work
Understand how candidates behave at work—so you can avoid mis-hires, build collaborative teams, and identify tomorrow’s leaders before day one.
Organisations using Thomas behavioural assessments report:
- Lower turnover in the first 6 months
- Faster time to productivity for new hires
- Increased team performance across a range of functions
Scientifically validated | ISO certified | Built for hiring & development
Trusted by 11,000+ organisations to strengthen management and leadership performance
Used by 11,000+ companies to reduce hiring costs and improve performance - across leadership teams in retail, tech, financial services, and professional services.
What are Behavioural Assessments?
A behavioural assessment is a psychometric tool that measures how someone naturally communicates, leads, and works—helping organisations predict role fit and performance.
Thomas uses the proven DISC model as the basis for our Behavioural Assessment, surfacing the traits that impact performance, team fit, and leadership potential. We ask 24 questions to build a behavioural profile in under 8 minutes, giving you instant insight into how someone works, before you make your offer.
What that means for your business:
- Avoid costly mistakes with mishires that can drain up to £20,000–£40,000 per bad hire.
- Faster onboarding reduces ramp-up time by up to 30% when you know how your people learn.
- Stronger teams boost team output by up to 25% through improved communication and collaboration fit.
Resumes show experience. Interviews show confidence. Behavioural assessments give you the missing data that takes time to discover - how someone will perform, lead, and collaborate in real-world conditions.
Why use Behavioural Assessments?
Great resumes can hide a bad fits. Confident interviews can mask future friction. And potential never quite turns into performance.
That’s where Thomas comes in.
Our behavioural assessments give you the insight to make smarter, faster hiring decisions from the start.
Organisations use them to:
- Reduce early attrition by understanding team and culture fit.
- Improve productivity by aligning work, communication, and leadership styles.
- Support internal mobility by spotting leadership potential that doesn’t show up on a CV.
Because instinct doesn’t scale - but data does.
A better indication of potential
The Thomas Behavioural Assessment helps you understand how candidates prefer to communicate, make decisions, and operate under pressure - so you can make unbiased decisions and align roles to strengths, not assumptions.
Built on the DISC model and delivered through the Thomas Assess platform, it gives your teams instant insight into:
- Communication style – how they engage with peers, managers, and clients.
- Pace and decisiveness – whether they move fast, methodically, or need direction.
- Structure vs. adaptability – how they respond to ambiguity and change.
- Preferred environment – where they’ll thrive (e.g. collaborative vs. independent roles).
From insight to action in just 8 minutes
Thomas puts behavioural data straight into the hands of your team. So every hiring and development decision is faster, smarter, and more consistent.
Here’s how it works:
- Select the Behavioural Assessment only, or combine with others in-platform.
- Invite candidates or team members to participate.
- Complete online in under 8 minutes, on any device.
- Review instant, visual insights, presented in an intuitive format anyone can use.
Apply the data across hiring, onboarding, coaching, and succession planning.
Reliability & validity
Our assessments undergo rigorous scientific tests to determine its reliability and validity as a psychological assessment. Our assessments are registered with the British Psychological Society, which means they’re audited against the technical criteria established by the European Standing Committee on Tests and Testing, part of the European Federation of Psychologists' Associations.
Our in-house psychologists continually undergo psychometric research with the PPA and have collaborated with the Psychometrics Centre at Cambridge University. If you’d like to support our continuous development programs, get in touch with our psychology team.
Learn even more with Thomas Assess
Behavioural insights are just the beginning. The Thomas Assess platform allows you to build role profiles, compare candidates, and develop your people beyond their first 6 months, using our wide range of psychometric assessments.
Choose Thomas Assess for:
- Behaviour Assessment (PPA)
- Personality Assessment (HPTI)
- Aptitude Assessment (IQ)
- Emotional Intelligence Assessment (EI)
- And 360 Degree Feedback Assessments
Help your people reach the height of their potential.
Trusted by people leaders worldwide
"We chose Thomas because of the simplicity of the assessments and the ease of articulating the results to colleagues and respondents. We know we're providing a positive candidate experience and the reports are really useful and user friendly"
Thomas Client
Data that gives you direction
Where other providers stop at charts and theory, Thomas turns behavioural science into actionable insights - instantly usable by your hiring managers and leadership teams.
Behavioural Assessment FAQs
How long does the Thomas Behavioural Assessment take?
Just 8 minutes. It’s fully online, browser-based, and works on any device.
What model is the assessment based on?
Thomas uses the DISC model - one of the most trusted psychometric frameworks for understanding workplace behaviour.
Can I combine this with other assessments?
Yes. You can combine behavioural insights with aptitude, personality, emotional intelligence, or 360-degree feedback assessments. And we’ll be on hand to help.
Are the results easy to understand?
Yes. Every report is visual, manager-friendly, and supported with plenty of clear advice, so no specialist is required.
Is the behavioural assessment scientifically validated?
Absolutely. Thomas assessments are BPS-registered, ISO-certified, and independently validated for reliability and fairness.
See how Thomas powers smarter talent decisions
Faster hiring. Better leadership. Lower attrition. Thomas helps organisations embed behavioural data into decisions that drive real business outcomes—at scale.
Organisations using Thomas behavioural assessments report:
- Lower turnover in the first 6 months
- Faster time to productivity for new hires
- Increased team performance across a range of functions
Join 11,000+ businesses already using behavioural science to build stronger, more aligned teams.
Scientifically validated | ISO certified | Built for hiring & development
