A logical process in which a conclusion is based on the concordance of multiple premises that are generally assumed to be true. It is a top-down approach.
- Méthodologies : Idéation, Résolution de problèmes
Deductive Reasoning

Deductive Reasoning
- Analyse de la variance (ANOVA), Critical to Quality (CTQ), Analyse des modes de défaillance et de leurs effets (AMDEC), Techniques de résolution de problèmes, Amélioration des processus, Gestion de la qualité, Analyse des causes profondes
Objectif :
Comment il est utilisé :
- Starting with a general principle or theory (the major premise), you move to a specific observation (the minor premise) to arrive at a logical conclusion. For example: All men are mortal (major). Socrates is a man (minor). Therefore, Socrates is mortal (conclusion).
Avantages
- If the premises are true, the conclusion is guaranteed to be true; provides a formal and rigorous structure for reaching conclusions.
Inconvénients
- The conclusion is entirely dependent on the truth of the initial premises; it does not generate new knowledge, only clarifies existing knowledge.
Catégories :
- Ingénierie, Résolution de problèmes, Qualité
Idéal pour :
- Reaching a logically certain conclusion based on established premises, commonly used in troubleshooting and diagnostics.
Deductive reasoning serves as a valuable methodology within product design and engineering, particularly during the conceptualization and troubleshooting phases of product development. It enables teams to systematically derive specific solutions or designs from overarching principles established through research or empirical evidence. For instance, in the field of automotive engineering, a team may begin with the general principle that reducing vehicle weight enhances fuel efficiency (major premise), followed by the specific observation that using lightweight materials like carbon fiber can decrease overall vehicle mass (minor premise), leading them to conclude that integrating carbon fiber components could improve the vehicle’s performance. This logical approach is particularly beneficial in industries such as aerospace, where stringent safety and performance requirements demand accurate conclusions drawn from foundational theories. Key participants in this process typically include product designers, engineers, and quality assurance teams who must collaborate to ensure that the premises they work with are valid and applicable. This methodology not only supports innovation but also assists in maintaining alignment with industry standards, thereby facilitating more effective problem-solving and enhancing product reliability. It finds applicability in testing phases where hypotheses regarding materials and technologies are tested, ensuring that any conclusions drawn are based on solid reasoning, making this approach particularly potent in highly regulated environments such as pharmaceuticals and technology development, where the integrity of findings is paramount.
Principales étapes de cette méthodologie
- Formulate a general principle or theory relevant to the problem at hand.
- Identify a specific observation or case that fits within the general principle.
- Derive logical implications or assertions based on the relationship between the general principle and the specific observation.
- Verify that the premises are valid and supported by established evidence.
- Articulate the logical conclusion drawn from the premises.
Conseils de pro
- Ensure the major premise is well-supported by empirical evidence or established theories to avoid incorrect deductions.
- Incorporate peer reviews or cross-disciplinary validations of your premises before proceeding with reasoning to strengthen outcomes.
- Regularly evaluate the relevance and accuracy of the minor premises, adjusting them as new data or insights emerge to maintain logical integrity.
Lire et comparer plusieurs méthodologies, nous recommandons le
> Référentiel méthodologique étendu <
ainsi que plus de 400 autres méthodologies.
Vos commentaires sur cette méthodologie ou des informations supplémentaires sont les bienvenus sur le site web de la Commission européenne. section des commentaires ci-dessous ↓ , ainsi que toute idée ou lien en rapport avec l'ingénierie.
Articles Similaires
Questionnaires sur les troubles musculo-squelettiques
Tests à plusieurs variables (MVT)
Analyse de régression multiple
Systèmes de capture de mouvement
Méthode MoSCoW
Test de la médiane de Mood