Ian Carmichael - Logic Models & Program Design
One-Time and Minimum Viable Actions
Now we come to designing an intervention. Knowing what we know about habits, what steps do we intend to take? Will we apply a Direct or an Indirect method? Some combination of the two? Do we try to adjust frequency of a cue? Will we seek to replace a behavior, or change the physical or… Read More »
Ian Carmichael - Logic Models & Program Design
Habit Change
A Habit is repeating the same behavior in the same context and being rewarded for it soon after. Habits follow a regular cycle: a cue initiates a behavior resulting in a reward. Habit change can come in two main flavors: Direct and Indirect. Direct methods involve influencing the habit cycle itself, while indirect methods influence… Read More »
Ian Carmichael - Logic Models & Program Design
Habits & Theory of Change
“We are what we repeatedly do. Excellence, then, is not an act, but a habit.” – Will Durant, from his 1926 work The Story of Philosophy The above was Mr. Durant’s attempt to summarize the philosophy of Aristotle in a pithy turn of phrase. I would say he did an excellent job, given how often… Read More »
Ian Carmichael - Logic Models & Program Design
Markedness and The Human Index
We have all experienced a moment where someone came along, glanced at a longstanding problem for a moment, and offered a solution so horrifyingly obvious once it was said out loud that we feel blindsided. We all have had that one friend who subverts every social convention, and with a single comment, a funny face… Read More »






