Irrecoverable cost test: if we hadn’t already spent time on this survey, would we consider 78 responses as sufficient evidence to explain the complex behaviors of document verification? This seems to be a drift between description and explanation, because a survey only provides self-reported data.
We should start from scratch and ask what real factors drive people to verify their passports weeks in advance or at the last minute.
For example, a traveler without children or major professional constraints might have a very different approach from a family planning an international trip, and this survey does not capture these underlying motivations.