Substance Abuse & Mental Health Services Administration

The Substance Abuse and Mental Health Services Administration (SAMHSA)

Step 3. Plan

Logic Models

A logic model is a visual tool intended to communicate the logic, or rationale, behind a program or process. Like a roadmap, it is meant to show, as clearly and in as few words as possible, where you are, where you are going, and how you will get there.

Specifically, logic models offer a way to describe the relationships among elements necessary to operate a program or change effort1, or, the links in a chain of reasoning about what leads to what in relation to a desired outcome or goal2. In the prevention field, planners often use them to:

  • Visualize how the pieces of a prevention plan fit together.
  • Provide explicit rationale for selecting prevention programs, policies and practices to address substance abuse problems.


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