Closing the loop · The response rate · Element
The repeat responders
Whether people who answered before answer again.
The part
What it is
A sharper measure than the overall rate: someone who answered once and not again has drawn a conclusion about whether it was worth it.
The repeat rate among people who received a reply against those who did not is the clearest evidence the loop matters.
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.