What Is a Logic Model?

An essential first step in evaluation is creating a logic model. A logic model (also called an evaluation map) is a diagram that shows program planners’ commonsense understanding of how and why program activities lead to program goals. A logic model can show you at which points data collection is crucial, and help you determine what types of data to collect.

Logic models begin with specific strategies and activities and relate them to intermediate and long-term outcomes. These outcomes can be measured and assessed to determine if the program is meeting intended goals.

Why Use a Logic Model?

A logic model outlines the logical sequence of events that leads from program activities to intended impacts. A logic model lays out each step that is expected to occur in a program, and serves as a visual program plan. Logic models help every aspect of program planning, and assist with evaluation efforts.

Creating a logic model helps everyone on a program team get on the same page regarding activities and outcomes, allowing everyone to work together more effectively.

Logic models also serve as the basis for the evaluation plan. Evaluators can decide when and how to measure each step in the logic model. For instance, if a program’s goals are not being achieved, the logic model can show which activity is not working. In addition, a logic model can show how desired outcomes result from specific activities.

When Should I Create a Logic Model?

The best time to construct your logic model is while you are considering what program activities to choose to lead you to your intended goals. Creating a logic model during program planning in this way will show if your proposed activities will lead to your ultimate goals, such as decreases in AOD use and violent incidents.

Your first draft of a logic model may show flaws in the sequence of the program, and allow you to revise activities before they are implemented, saving time and money.

What Does a Logic Model Look Like?

There is no one way to draw a logic model. Many begin with program activities on the left side, progressing to long-term outcomes on the right. The middle of the model depicts the series of events connecting the activities to the outcomes.

Below is a sample logic model on responsible beverage service.