Workplace personality tests & assessments
Unlock long-term performance with Personality assessments
Predict behaviour, build resilient teams, and personalize development when you know how your people think, adapt, and grow at work.
Organisations using Thomas Personality assessments see:
- Improved employee engagement from personalised pre-boarding and onboarding experiences
- Increased retention, with candidates staying longer in role
- Improvement in manager-employee coaching outcomes
Used by 10,000+ businesses globally | ISO-certified | Built on the Big Five model
Trusted by 11,000+ organisations globally - from fast-growing companies to international industry names
Used across sectors like SaaS, financial services, and professional services, our people science is backed by over 40 years of providing organisational psychology.
Personality hire? Base it on science
Need a quick way to see beyond perfectly polished interview personas? Based on the Big Five model, the Thomas Personality Assessment (HPTI), reveals the traits that drive performance — so you can make good long-term decisions at speed.
Why use workplace personality assessments?
CVs tell you what someone has done. Personality assessments reveal how they'll approach work, handle challenges, and connect with others — giving you the insight to make smarter people decisions.
Thomas customers use them to:
- Predict job performance by understanding how people think, adapt, and respond under pressure.
- Improve retention by matching candidates to roles, teams, and cultures where they'll thrive.
- Personalise onboarding with tailored experiences that help new hires integrate faster.
- Strengthen coaching by giving managers insight into individual motivations and working styles.
- Build balanced teams by understanding complementary personality dynamics across the group.
- Develop self-aware leaders who understand their strengths, blind spots, and impact on others.
Built on the Big Five personality model
The most widely researched and validated framework in personality psychology, adapted specifically for workplace applications. Measure five core traits that are strongly linked to workplace behaviour and performance.
Openness
Curiosity, creativity, and willingness to try new things
Conscientiousness
Organisation, dependability, and self-discipline
Extraversion
Sociability, assertiveness, and positive emotion
Agreeableness
Cooperation, trust, and consideration for others
Emotional Stability
Resilience, calmness, and stress management
Personality reveals the drivers of long-term success
The Thomas Personality Assessment gives you deep insight into what motivates individuals, how they respond to pressure, and how they interact with others - all based on extensive psychological research.
Key features and benefits:
- Predict role fit and retention – understand the traits that drive candidates before you hire
- Reduce management strain – identify stressors and motivators to coach and retain more effectively
- Enable high-potential talent – match individuals to development paths that maximize ROI
- Unlock insights fast – instant, manager-ready reports supply your people with the insights they need to succeed.
Can personality assessments be faked?
With AI tools on the rise, it's a fair question. AI might change how candidates respond - but it doesn't make assessments unreliable. Find out how well-designed tools avoid the pitfalls of AI enhancement.
Better together: Combining personality with other assessments
Get the most from your personality insights by pairing them with other Thomas assessments.
Personality + Aptitude
Predict long-term hiring success
Understand how someone approaches work alongside how quickly they learn and adapt. Gives you a fuller picture for predicting who will thrive in the role long term.
Personality + Behaviour
Build balanced teams
See the deeper traits that drive someone alongside how they show up day to day. Helps you build teams with complementary styles and stronger collaboration.
Personality + Emotional intelligence
Develop self-aware leaders
Combine personality insight with emotional awareness to spot leaders who are resilient, self-aware, and able to inspire. A deeper view of true leadership potential.
Get more from your assessments
Assessment is just the start. Turn insight into action with the Thomas CXI platform, embedding science into how your people work and develop every day.
Trusted, tested, and backed by science
Turn trusted insight into better hiring, stronger leadership and more connected teams — with science you can rely on and AI you can trust.
Validated science
Rigorous, reliable psychometrics, registered with the British Psychological Society and audited against European EFPA testing standards.
Ethical AI coaching
Award-winning AI delivers responsible, personalised coaching vetted by psychologists — helping you apply insight to real life moments.
Exclusive connection capability
Our Connection Measure scientifically quantifies and improves the factors that underpin engagement. With insights exclusive to Thomas.
Unlock long-term performance with personality assessments
Build engaged, high-performing teams with insight into how people think, lead, and adapt.
Organizations using Thomas Personality assessments see:
- Improved employee engagement from personalised pre-boarding and onboarding experiences
- Increased retention, with candidates staying longer in role
- Improvement in manager-employee coaching outcomes
Join thousands of organizations using Thomas personality assessments to build stronger teams.
Scientifically validated | ISO-certified | Built for hiring & development
Frequently asked questions about our Workplace Personality Tests
What is a personality assessment?
The Thomas Personality Assessment (also known as a HPTI assessment) reveals the traits that drive how people think, work, and interact — and how they transfer to the workplace. A quick way to see beyond perfectly polished interview personas, it gives you the unbiased data you need to check your assumptions. Use it to hire smarter, develop faster, and create future-ready leaders.
The Thomas Personality Assessment is:
- Grounded in the Big Five methodology — the most robust and research-backed model in psychology
- Fully online and fast to complete — takes just 10 minutes
- Designed for business — outputs are visual, practical, and manager-friendly
- Part of the Thomas CXI platform — so you can combine it with Aptitude, Behavioural, or EI assessments for broader insights
What does the Thomas Personality Assessment measure?
It evaluates five core traits - openness, conscientiousness, extraversion, agreeableness, and emotional stability - to predict how individuals think, work, and interact at work.
How long does it take to complete?
Less than 10 minutes. It’s fully online, mobile-friendly, and requires no setup or downloads.
Is it based on a recognized model?
Yes. The assessment is grounded in the Big Five model - one of the most respected scientific frameworks in psychology.
How is the data used in hiring and development?
Managers get clear, actionable reports that can easily be compared in Thomas Assess’s intuitive interface - ideal for selection, shortlisting, and planning personal development support.
Can I use this alongside other Thomas assessments?
Absolutely. It integrates seamlessly with Thomas’ behavioural, aptitude, emotional intelligence, and 360 tools.
Is the assessment scientifically validated?
Yes. It’s developed by in-house psychologists, ISO-certified, BPS-aligned, and backed by regular psychometric research.
Are personality tests effective for employee development?
Yes. Thomas Personality Assessments can be used beyond hiring to help identify strengths, motivators, and potential development areas - enabling personalized coaching and succession planning.
Can personality assessments improve team performance and collaboration?
Personality assessments show how individuals communicate, make decisions, and work with others. This enables organisations to build teams with complementary strengths, reduce friction, and improve collaboration and overall performance.
Are personality assessments fair and unbiased in hiring?
Personality assessments use consistent, structured criteria to evaluate every candidate, reducing reliance on subjective judgement. When used alongside other methods, they support more objective and balanced hiring decisions.
How can personality assessments help organisations identify leadership potential?
Personality assessments identify traits linked to leadership effectiveness, such as resilience, communication style, and decision-making approach. These insights help organisations recognise individuals with the potential to succeed in leadership roles.
When should organisations introduce personality assessments in leadership development programmes?
Personality assessments are most effective at the start of a leadership development programme. They provide a clear baseline of strengths and working styles, enabling more targeted and relevant development from the outset.
How can organisations use personality assessments to build more balanced teams?
Personality assessments show how different working styles interact within a team. This enables organisations to identify gaps, avoid overlap, and create teams with a more effective balance of strengths.
