This post will look at different types of logic models. In general, there are three types of logic models as shown below.

• Theory Approach Models
• Outcome Approach Models
• Activities Approach Models

Of course, in the real world, it is never this simple as three categories. Many models are a mixture of more than one. The benefit of being aware of these three models is that it helps you as the logic model developer to understand what you want to focus on when creating a logic model.

Theory Approach Models

The purpose of theories is to explain. Therefore, a theory approach model is focused on depicting how and why a program will work. The model will go into detail on explaining how a program will achieve something.

In general, there will be an emphasis not on outcomes and impact but on the earlier part of the model such as the inputs and even components before the inputs. It’s not that the other sections are not important. Instead, the goal is to ensure grant readers understand the justification for the program.

Outcomes Approach Models

Outcomes are the direct influence that outputs from a program have on the target population in terms of changes in attitudes, behavior, etc. Therefore, an outcome approach model is focused on outcomes and their connection with activities and impact. Often individual activities are linked directly to the outcome they are supposed to support.

Outcome approach models are useful for evaluation as they are focused on the measured components of a program. For example, if one of the outcomes of a program is a 30% increase in students reading at grade level. Such an outcome can be measured and determined if the program was able to achieve this or not.

Outcome approach models are not as concerned with the how and why of a program as theory models are. Instead, this model is focused on the performance of the model and whether the outcomes are achieved or not.

Activities Approach Models

Activities approach models emphasize what the program will do through the activities or methods of the program. The activities are often mapped out in a sequential fashion leading up to a particular output. In other words, several activities will happen chronologically to achieve a specific outcome.

Unlike the theory model, the activity model is not training as much to explain the what and how of the model. In addition, unlike the outcome model, the activity model is not focused on how the program influences the target population.

Conclusion

It is important to remember that how to develop one of these models in particular will vary widely from place to place. The real point here is to be aware of the focus of your logic model. Being aware of what matters most to you and your readers, whether it is the theory, outcomes, or activities, can help you shape the most appropriate logic model for your context