Behaviour change · The measured change · Element
The target behaviour
What the programme was designed to change.
The part
What it is
Stated at design and measured at review. Where the two differ, the programme is being judged on something it was not built for.
Frequency, breadth, retention or spend. Each requires a different measure.
The smallest level
The attributes it carries
Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.