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The Register · Behavioural · DISC

Extended DISC / FinxS

by FinxS (Extended DISC)

A flexible, well-priced behavioural system for development and coaching.

GTI Accredited
B 82/100
Overall score
The scorecard

How it scores against the Standard

Scored 0–100 on each criterion against published anchors, multiplied by the fixed weight, and summed to the overall score.

Extended DISC / FinxS · scored against the GTI Talent Standard · v1 · 2025
CriterionWeightScore
Predictive & construct validityDoes the tool measure what it claims, and does it predict on-the-job outcomes? Evidence from peer-reviewed and technical manuals.3080
ReliabilityTest–retest stability and internal consistency. Would the same person get the same result next month?2082
Fairness & adverse impactGroup-difference and adverse-impact data; legal defensibility for selection use (EEOC / equality law).2084
Transparency & evidenceIs the technical documentation, norm data and scoring logic openly published and independently auditable?1579
Total cost & usabilityAll-in cost including certification, per-report and platform fees — weighed against report quality and ease of use.1090
Faking resistanceHow well the instrument resists impression management and deliberate distortion.572
Overall (weighted)10082

Scored against the GTI Standard. Weights are fixed and published.


The verdict

Extended DISC, delivered on the FinxS platform, is a configurable four-quadrant behavioural instrument with strong workshop utility and competitive economics. Like all DISC-family tools it is best suited to development and team communication rather than high-stakes selection.

Best for: Team development, coaching and communication training.


Strengths and watch-outs

Strengths

  • Excellent value and flexible deployment
  • Adaptive questionnaire with a conscious/unconscious split
  • Strong facilitation and team-mapping outputs

Watch-outs

  • DISC-family constructs are descriptive, not predictive of performance
  • Best for development, not high-stakes selection

Dr. Elena Reyes
Reviewed by
Dr. Elena ReyesChair, Review Panel
Industrial-Organisational Psychology
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Extended DISC / FinxSThe Predictive Index

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