Thomas International

Thomas International provides psychometric and aptitude assessments (behaviour/DISC, cognitive ability, personality and emotional intelligence) with an AI coaching layer, used for hiring, candidate selection and employee development.
AssessmentScreening

HireAIScore rates Thomas International 48 out of 100 (grade F, Substantial gaps) under rubric v1.0, last reviewed July 17, 2026. Thomas International ranks 31 of 82 vendors rated in Assessment AI, against a category average of 46. That score is drawn from 17 evidence items across 7 rubric criteria for Thomas International — 11 with a cited source, 6 recording that nothing was located.

Score breakdown

Thomas International, criterion by criterion

Each rubric criterion is scored out of 100 on the cited evidence, then weighted into the total.

Weighted contribution shown to the right of each bar.

  1. Article 11 Technical Documentation

    Weight 20% · avg 50

    54

    +10.8

  2. Bias Audit Transparency

    Weight 18% · avg 41

    43

    +7.7

  3. FRIA Support

    Weight 15% · avg 31

    33

    +5.0

  4. Data Governance Disclosure

    Weight 15% · avg 53

    57

    +8.5

  5. Human Oversight Design

    Weight 12% · avg 55

    51

    +6.1

  6. Post-Market Monitoring

    Weight 12% · avg 38

    40

    +4.8

  7. Customer Documentation

    Weight 8% · avg 58

    60

    +4.8

Total weighted score

47.8(rounded to 48 for display)

Category avg is the mean raw score on that criterion across the 82 Assessment AI vendors in scope of this rubric, this one included.

Strongest criterion

Customer Documentation

60raw / 100

Contributes 4.8 to the total. 60 against a 58 category average.

Weakest criterion

FRIA Support

33raw / 100

Contributes 5.0 to the total. 33 against a 31 category average.

Cited evidence

The evidence behind the score

Every score is backed by at least one cited piece of evidence. Open a criterion to see what was found, when, and where.

Download diligence record

Evidence ledger

Items
17
Documentation
11
Absence
6
With a source URL
11 of 17
Source hostnames
1
Fewest items
2
Bias Audit Transparency

These figures measure how thoroughly Thomas International was reviewed, not how Thomas International performed — an absence row, recording that nothing was located, is counted like any other item.

Article 11 Technical Documentation

3 items54
  • DocumentationCaptured Jul 17, 2026

    A 'How our AI works' page describes Thom's proprietary-only data scope, code of ethics, psychologist vetting and a Guardrails AI keyword blocker, functioning as a lightweight responsible-AI/explainability statement.

    https://www.thomas.co/how-our-ai-works

  • DocumentationCaptured Jul 17, 2026

    Downloadable 'Science behind' whitepapers (Aptitude and Personality, Jan 2024) document the psychometric basis, developers and validity theory behind the assessments.

    https://www.thomas.co/science-behind-our-assessments

  • AbsenceCaptured Jul 17, 2026

    No ISO 42001 certification, formal AI model/system card, explainability statement, or instructions-for-use technical pack for the AI system was found on thomas.co or via web search.

    Have a URL that disputes this?

Bias Audit Transparency

2 items43
  • DocumentationCaptured Jul 17, 2026

    Assessments are registered with the British Psychological Society and audited against EFPA standards, with claims of fairness testing 'across different groups,' but no bias/fairness report is downloadable.

    https://www.thomas.co/assessments/psychometric-assessment-aptitude-tests

  • AbsenceCaptured Jul 17, 2026

    No NYC Local Law 144 AEDT bias-audit summary and no independent algorithmic bias audit (e.g., BABL AI, Warden AI, Holistic AI, ORCAA) were found on the site or in web search results.

    Have a URL that disputes this?

FRIA Support

2 items33
  • DocumentationCaptured Jul 17, 2026

    A Data Protection Impact Assessment (DPIA) and Data Protection FAQs are published for deployers, but these are GDPR instruments, not EU AI Act Fundamental Rights Impact Assessments.

    https://www.thomas.co/data-protection

  • AbsenceCaptured Jul 17, 2026

    No EU AI Act Article 27 FRIA template or explicit deployer-obligation guidance was found on thomas.co or via web search.

    Have a URL that disputes this?

Data Governance Disclosure

3 items57

Human Oversight Design

2 items51
  • DocumentationCaptured Jul 17, 2026

    Psychologists vet all Thom AI outputs, use is consent-based, and a Guardrails AI keyword blocker constrains responses; assessments are framed as objective decision support rather than automated decisions.

    https://www.thomas.co/how-our-ai-works

  • AbsenceCaptured Jul 17, 2026

    No in-product human-override controls, audit logs, or per-jurisdiction configuration toggles are described publicly on thomas.co.

    Have a URL that disputes this?

Post-Market Monitoring

2 items40
  • DocumentationCaptured Jul 17, 2026

    An annual independent penetration test (Security Assessment, Apr 2026) and ISO 27001 surveillance provide ongoing security assurance, with security documentation available on request.

    https://www.thomas.co/security-and-compliance

  • AbsenceCaptured Jul 17, 2026

    No public status page, vulnerability-disclosure / bug-bounty program, model-update changelog, or continuous-monitoring dashboard was found on the site or via web search.

    Have a URL that disputes this?

Customer Documentation

3 items60

Editorial notes

Company overview

Thomas International (trading as Thomas; thomas.co) is a UK talent-assessment provider founded in 1981 and headquartered in Marlow, Buckinghamshire, backed by Palamon Capital Partners. Its psychometric suite - Personal Profile Analysis (DISC behaviour), the General Intelligence Assessment (aptitude), HPTI (personality) and TEIQue (emotional intelligence) - is used for hiring, selection, development and team-building across 60+ countries, with more than two million assessments completed each year. The assessments are registered with the British Psychological Society and built to EFPA standards, and since 2024 the platform includes 'Thom,' an AI coach that interprets a person's behavioural profile.

Regulatory exposure

Thomas's assessments are statistically-scored tools used to substantially assist employment decisions, placing them within the EU AI Act Annex III 'employment' high-risk category and within scope of NYC Local Law 144 (AEDT bias audits) when used for NYC-based roles. The company evidences strong general information-security governance - ISO 27001:2022 (Dec 2025) and ISO 9001, an annual independent penetration test, and a publicly downloadable Statement of Applicability - alongside psychometric fairness accreditation via the BPS/EFPA. However, it publishes no NYC LL 144 bias-audit summary, no independent algorithmic bias audit, and no EU AI Act deployer or FRIA materials, so much of its AI-specific regulatory readiness is undocumented in public.

Path to a higher score

The largest gains would come from publishing an algorithmic bias / adverse-impact audit - ideally an NYC LL 144-style public summary or an independent audit by a firm such as Warden AI or Holistic AI - with downloadable fairness statistics for each assessment. A formal AI system card and explainability statement for Thom, plus ISO 42001 certification, would lift the technical-documentation score, while EU AI Act deployer guidance and a FRIA template would move the currently near-absent FRIA category. Adding a public status page / vulnerability-disclosure channel and documenting in-product human-override, audit-log and per-jurisdiction controls would strengthen the post-market-monitoring and human-oversight categories.

Regulatory frame

What applies to assessment AI.

Assessment is the most-regulated surface in AI hiring. NYC LL 144, EEOC and OFCCP frameworks, Illinois HB 3773, and EU AI Act Annex III §4 all apply, with overlap on bias-audit obligations.

Keep reading

All assessment vendorsHow this score is builtAnnex IV section-by-section: what AI hiring vendors must documentWhat makes a defensible NYC LL 144 bias audit

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Ranking

Others rated in Assessment AI

Ranked 31 of 82 by weighted total under rubric v1.0. The ordering is arithmetic on the rubric and carries no view on which tool suits a given hiring process.

  1. #28VidCruiter48F
  2. #29The Predictive Index48F
  3. #30Saville Assessment48F
  4. #31Thomas InternationalThis profile48F
  5. #32Crosschq47F
  6. #33Hogan Assessments47F
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Conflicts of interest

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Casework has no commercial relationship with this vendor.