Let's set aside the initial investment in this survey: is it really the starting point for understanding why people verify their identity documents so early?
A simple Google Forms survey on planning habits does not shed light on the decision-making mechanisms specific to document verification.
To obtain reliable data, a targeted study exploring the deep motivations behind early or late verification would be necessary.
For example, in Switzerland, the complexity of visas for certain destinations or the need to update a passport for a child are much more decisive factors than general planning preferences.
This survey provides a snapshot but does not allow for a robust and actionable causal explanation.