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Understanding how we decide.

A method for analysing the decision-making process and turning reflection into coherent action.

Discover the methodTry the simulator

The two GEN-D CODE volumes on a wooden desk

A decision is not a moment. It is a process.

The GEN-D CODE – Decision Genome is a method developed by Antonio Spiezia from more than thirty-five years of international professional experience.

It starts from a simple idea: a decision is never the product of a single factor. It results from a process in which what we observe, the way we evaluate the situation, the understanding we build of it and, finally, the action we decide to take all interact.

The GEN-D CODE seeks to make this process visible, structured and open to analysis.

  1. Observation

    Understand the situation and identify the relevant elements.

  2. Evaluation

    Evaluate the observed elements according to their relevance, their weight and their significance in the decision.

  3. Comprehension

    Bring together the observed and evaluated elements to build a coherent view of the situation.

  4. Action

    Turn the analysis into a coherent decision that is fully owned.

A method born of experience

The model analyses the path of a decision, its influences, its possible distortions and its consequences. It does not seek to provide a “right decision” automatically, but to help understand and structure the path that leads to action.

The GEN-D CODE is the result of long international professional experience and of observing the mechanisms that lead experienced people to different decisions when faced with comparable situations.

AAction IIdentity Alignment SD Decisional Attunement

From action to Decisional Attunement

The process of observation, evaluation and understanding identifies the most coherent action. Identifying it does not yet mean carrying it out.

Decisional Attunement emerges when the chosen action is consistent with the decision-maker’s identity. It is the result of this alignment, rather than an additional stage of the process.

Two GEN-D applications

GEN-D CODE – Decision Genome

The simulator is a tool for reflection and analysis. It provides no legal advice, no financial advice and no personalised recommendation, and does not replace the user’s own judgement.

Understanding one’s own decision-making process.

Personal and professional decisions.

A decision on your mind? Go through the different stages of the GEN-D CODE and see how your decision takes shape.

Path
The decision · Observation · Evaluation · Comprehension · Action · Identity
Result
Decision map
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GEN-D Professional LCB/FT-P-C

The GEN-D Professional Simulator does not replace the applicable laws and regulations, the guidelines of the competent authorities or the professional’s internal procedures. It provides no legal advice, automatic regulatory classification or compliance recommendation.

Professional application of the GEN-D model to compliance processes.

Structuring and documenting professional analysis.

Risk Compliance Traceability Audit trail
Paths
Current case · Retrospective audit
Result
Case summary
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Cover of the book Le Code GEN-D – Decision Genome by Antonio Spiezia

The book

Le Code GEN-D

Antonio Spiezia

The book presents the model in its general dimension: understanding the mechanics of a decision, recognising the factors that can change its course and developing a greater awareness of the passage from analysis to action.

Edition
2026
Language
French
ISBN
9798193717362
Cover of Antonio Spiezia’s second volume GEN-D CODE LCB/FT-P-C

The second volume

GEN-D CODE · LCB/FT-P-C

Antonio Spiezia

La décision sous contrainte

A method for analysing and auditing professional decisions. The GEN-D Code was conceived as a general grammar of decision-making. This second volume tests it in a specific professional field: combating money laundering, terrorist and proliferation financing, and corruption (LCB/FT-P-C).

Edition
2026
Language
French