Which model category would include the techniques of decision modelling and root cause analysis?

Decision modelling and root cause analysis fall under the Rationale model category, which focuses on the reasoning, logic, and justification behind decisions or problem identification. These techniques help in tracing the rationale for actions, understanding why a particular problem exists, and determining how decisions align with business objectives.

Decision modelling helps map out choices and potential outcomes.

Root cause analysis identifies underlying causes of issues.

BABOK® Reference:

These are detailed under Requirements Analysis and Design Definition, particularly in modeling techniques categorized under Rationale models.