| Course | HLTH 8242 Changing Health Behavior: Theory and Practice |
|---|---|
| Week | Week 6 |
| Paper type | Logic model |
| Length | About 780 words, 5 pages |
| Format | APA 7 student paper |
| School | Walden University |
| Program | PhD in Public Health |
| Updated | October 2026 |
Free sample paper for HLTH 8242 Week 6
Logic Model With a Mechanism Column: The Stool Test Kit Program From Inputs to Return, Naming the Construct Each Activity Must Move Before the Behavior Can Change
Student Name
Walden University
HLTH 8242: Changing Health Behavior: Theory and Practice
Instructor Name
Month Day, Year
Logic Model With a Mechanism Column: The Stool Test Kit Program From Inputs to Return, Naming the Construct Each Activity Must Move Before the Behavior Can Change
Why Add a Column
The standard logic model described in the W. K. Kellogg Foundation's guide moves from resources and activities to outputs, outcomes and impact (W. K. Kellogg Foundation, 2004). It shows what a program does and what it hopes to achieve, but not why the activities should produce the outcomes. For a theory-based program, that gap matters. This model for the Fallbrook clinic network's kit program adds a mechanism column between activities and outcomes, naming the construct from the integrated behavioral model that each activity is expected to change (Montano & Kasprzyk, 2015). If the behavior does not change, the column tells the evaluation where to look.
The Model
Table 1
Kit Return Logic Model With Mechanisms
| Inputs | Activities | Outputs | Mechanism | Short-term outcomes | Behavioral outcome | Long-term outcome | |
|---|---|---|---|---|---|---|
| Patient list from records; lab; mailing vendor | Mail kit with picture guide and short video link | Kits mailed; video views | Knowledge and skill | Patients report knowing how to collect | Kit returned within 30 days | More cancers found early | |
| Text and phone system | Text reminder on day 7 with a planning prompt | Reminders sent | Salience; implementation intention | Patients name a day to do the test | Kit returned within 30 days | More cancers found early | |
| Outreach staff | Live call on day 21 to non-returners | Calls completed | Salience; skill; experiential attitude | Concerns answered | Kit returned within 30 days | More cancers found early | |
| Return statistics from the lab | Descriptive norm line in the reminder | Messages sent | Perceived norms | Patients perceive the test as common | Kit returned within 30 days | More cancers found early | |
| Clinic schedulers | Clinic drop-off option | Drop-off kits logged | Environmental constraint | Patients without a mailbox can return | Kit returned within 30 days | More cancers found early | |
The behavioral outcome is the same in every row because all activities aim at one behavior; the mechanisms differ.
Outputs and Outcomes
An output is a count of what the program delivered: kits mailed, reminders sent, calls completed. An outcome is a change in the people the program serves. The model keeps the two apart because a program can deliver every output and still produce no change. If 4,000 reminders are sent and return does not rise, the program has an output and no outcome, and the mechanism column suggests the next question: did the reminder raise salience, or did patients ignore it?
Mechanisms in the Model
Each mechanism comes from the barrier analysis. Knowledge and skill are addressed by the picture guide and video, because confusion about collection was a common barrier. Salience is addressed by the timed reminder and the planning prompt, because forgetting was the most common barrier. The live call addresses several mechanisms at once, which is why it is reserved for patients who have not returned the kit by day 21. The descriptive norm line addresses perceived norms. The drop-off option addresses an environmental constraint for patients who lack easy access to a mailbox. The behavior change wheel describes intervention functions such as education, training, prompts and environmental restructuring that map onto capability, opportunity and motivation (Michie et al., 2011); the model's activities fall within those functions.
Reading the Model Backward
A useful check on any logic model is to read it from right to left. Starting from the behavioral outcome, kit return within 30 days, each row asks what had to change in the patient first, and then what the program did to change it. Reading this way exposes activities that have no mechanism, which should be cut, and mechanisms with no activity, which the program has left unaddressed. In this model, every activity has a mechanism, but one barrier from the analysis, doubt about whether a stool test is accurate, has only indirect coverage through the live call. That gap is acknowledged rather than filled with a weak activity, and the evaluation will record how many non-returners cite it.
The Long-Term Outcome
The model's long-term outcome is more cancers found early. It deliberately does not include completion of follow-up colonoscopy after an abnormal test, even though that step is needed for the benefit to occur. Follow-up is a separate behavior with different actors and barriers, and including it here would make the model claim more than the program does. The network tracks it separately.
Assumptions
The model assumes that patients receive the mailing at a correct address, that the laboratory logs every kit received and that the clinic can act on positive results. It also assumes that the constructs named in the mechanism column can be measured, which the evaluation plan will address.
References
Michie, S., van Stralen, M. M., & West, R. (2011). The behaviour change wheel: A new method for characterising and designing behaviour change interventions. Implementation Science, 6, Article 42. https://doi.org/10.1186/1748-5908-6-42
Montano, D. E., & Kasprzyk, D. (2015). Theory of reasoned action, theory of planned behavior, and the integrated behavioral model. In K. Glanz, B. K. Rimer, & K. Viswanath (Eds.), Health behavior: Theory, research, and practice (5th ed., pp. 95-124). Jossey-Bass.
W. K. Kellogg Foundation. (2004). Logic model development guide.
The Walden HLTH 8242 Week 6 instructions
This week's deliverable is a logic model for the intervention. The model should show inputs, activities, outputs and outcomes, and faculty in this course value models that also show how theory connects activities to outcomes. Adding a mechanism column or labeling constructs is often welcomed. The paper should distinguish outputs from outcomes, explain each mechanism with reference to the barrier analysis and state the model's assumptions. Decisions about which outcomes to include, such as later clinical steps, should be justified. About four pages with the model as a table is common.
How this HLTH 8242 Week 6 example is built
The opening section explains why the template is modified and cites the W. K. Kellogg Foundation guide and Montano and Kasprzyk. Table 1 sets out five rows, each with inputs, an activity, outputs, a mechanism, a short-term outcome, the behavioral outcome and the long-term outcome. A section explains the difference between outputs and outcomes with an example of reminders sent but return unchanged. The mechanism section ties each activity to a barrier and cites the behavior change wheel's intervention functions. A new section reads the model backward and finds that doubt about the test's accuracy has only indirect coverage. A section explains why follow-up colonoscopy is excluded from the long-term outcome. Assumptions about addresses, logging and clinical follow-up close the paper.
HLTH 8242 Week 6 rubric: what earns full marks
Logic models are graded on whether the theory is visible in the program's structure. A model that lists activities and outcomes without connecting them earns limited credit. The rubric rewards mechanisms tied to the barrier analysis, a clear distinction between outputs and outcomes and a long-term outcome the program can honestly claim. Faculty value a check for activities without mechanisms and mechanisms without activities. Assumptions should be stated. Modifying the template is acceptable when the reason is explained. Faculty also look for outcomes worded as changes in people, not as program activities, and for a long-term outcome that the program could plausibly influence. Explaining what each row assumes about delivery adds credibility.
Common HLTH 8242 Week 6 mistakes, and how to avoid them
Logic models often read as a list of everything a program does, with outcomes that the activities could not plausibly produce. Others confuse outputs, such as reminders sent, with outcomes, such as patients remembering. Some include long-term outcomes far beyond the program's reach. To build a stronger model, start from the behavior and ask what has to change in people first. Name that mechanism for each activity. Keep outputs and outcomes apart. Read the model backward to find gaps. State what you assume. Word each outcome as a change in the people served. Check that the long-term outcome is one your program can honestly claim, and state the assumptions behind each row so an evaluator knows what to verify. A logic model for your own program, built with a mechanism column, can be drafted around your materials.
Get a HLTH 8242 Week 6 example written to your instructions
Send the activities you are planning, the constructs they target and the prompt with its rubric; include your barrier analysis where one exists. An HLTH 8242 logic model comes back with a mechanism column between activities and outcomes, outputs kept apart from effects and assumptions stated so they could fail. Allow 24 to 48 hours; your first is free.
More HLTH 8242 papers and PhD in Public Health samples
- HLTH 8242 Week 1: Target Behavior Orientation Post
- HLTH 8242 Week 2: Target Behavior Brief
- HLTH 8242 Week 3: Risk Message Discussion Post
- HLTH 8242 Week 4: Theory Selection Memo
- HLTH 8242 Week 5: Kit Return Barrier Analysis
- HLTH 8242 Week 7: Construct Activity Map
- HLTH 8242 Week 8: TIDieR Intervention Draft
- HLTH 8242 Week 9: Mediation Evaluation Plan
- HLTH 8242 Week 10: Incentive Design Peer Critique
- HLTH 8242 Week 11: Program Design Defense
- HLTH 8202E Week 6: Two-List Sampling Plan
HLTH 8242 Week 6 questions, answered
Is a mechanism column allowed if the template does not include one?
Most instructors welcome it if the rest of the template is intact, since it shows the theory at work. Where a strict template is required, the construct can appear as a label inside the short-term outcome column instead. The sample adds a column because it makes each claim easy to find and to test, which is what you want a reviewer doing.
What is the difference between an output and an outcome?
An output counts what the program delivered: letters mailed, texts sent, calls made. An outcome is a change in the people served, such as higher salience of the kit or more confidence in collecting the sample. Delivering every output does not guarantee any outcome, which is exactly why the two are kept in separate columns.
Where can I find a free HLTH 8242 Week 6 sample paper?
The full Week 6 logic model for HLTH 8242 is shown on this page, with a mechanism column linking five kit program activities to constructs, and three references.
Why does the model exclude follow-up colonoscopy from its outcomes?
Because follow-up after an abnormal result involves other people, other obstacles and another time frame; including it would make the model claim more than the kit program does, so the network tracks it separately.
What does reading the model backward reveal?
That every activity has a mechanism, but one barrier from the analysis, doubt that a stool test is accurate without symptoms, is covered only indirectly through the outreach call.