A logic model visually depicts the relationship between resources, activities, outputs, assumptions, and outcomes of a program. It helps map out the relationship between a program’s activities and its intended effects. Logic models should be revised periodically to reflect lessons learned and changes within the program.

Benefits of Logic Models

Logic models encourage program success by:

  • Depicting the purpose and expected results of the program.
  • Highlighting actions that are expected to lead to desired results.
  • Becoming a reference point throughout the programmatic process.
  • Improving the planning, implementation, and evaluation process.
  • Allowing stakeholders to provide input and come to a consensus on program components.
  • Identifying potential obstacles so they can be addressed early on.

Logic Model Components

  • Inputs: the resources that go into a program.
  • Activities: the actions taken to produce the desired outcomes.
  • Outputs: the tangible results of the activities.
  • Outcomes: the desired results of the program. These can be short-term, intermediate, and long-term.
  • Assumptions: beliefs about the program and the processes/resources involved.
  • Contextual factors: the environment in which the program exists.

Things to Consider

When developing logic models, consider the following:

  • Who should be involved in the development and iterations of the logic model?
  • What is the viability of the outputs and outcome measures?
  • How might the logic model and/or program change over time?
  • How might program goals and activities be connected to relevant research and best practices?

Logic Model Template

Figure 1 depicts a logic model template typically used by researchers at the Illinois Criminal Justice Information Authority (ICJIA). For a fillable version of this template, please download the PDF version of this brief.

Figure 1

Logic Model Template

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Resources

Centers for Disease Control and Prevention. (n.d.). Evaluation guide: Developing and using a logic model. Washington, DC: U.S. Department of Health and Human Services.

W.H. Kellogg Foundation. (2004). Using logic models to bring together planning, evaluation, and action: Logic model development guide. Battle Creek, MI: W.H. Kellogg Foundation.