Deliberate Restart
A clear restart undertaken when a user's thinking or the dialogue has become tangled, in which the user breaks off the snarled line and re-opens the task from a fresh starting point.
Operational Definition
EVENT. One occurrence is coded when, following turns showing confusion or a tangled exchange (repair attempts, contradictions, circularity), a user turn explicitly abandons the current line and restarts (e.g., 'let's start over'). The explicit restart turn is the countable marker.
Measurement Schema
Proposed measurement protocol (not yet empirically validated): Rater coding of restart events: coders flag preceding tangle indicators and the explicit restart turn that resets the task; count restarts per session and record the length of the tangled stretch preceding each; inter-rater agreement would be assessed via Cohen's kappa.