Prevent modifications of answers passed a certain point in the questionnaire

Hello SuSo Team !

I am designing a (CAPI) questionnaire with two parts. The first is led by the interviewer. The second is self-completed by the interviewee, and it collects very sensitive information. We want to ensure that the interviewer won’t be able to access the answers given by the interviewee.
Is there a way to do that ?

My idea was to put a question at the end saying :
“Q100 : Are you done with the questionnaire ?” with 1:Yes and 2:No as answers…
Then I would put as a enabling condition “Q100 != 1” to all the sections of the questionnaire, so that, when the interviewee is done with questionnaire, all of its content becomes disabled.
But, I wonder if these interviews would still capture the answers correctly (since the questions suddenly became disabled) ? Could that cause any issues further down the data collection process ?

Many thanks for your time and help,
Noé B.

Consider to have two questionnaires and different assignments (CAPI & CAWI).
Consider having supervisor question to open the second part, reassign to a different Interviewer, switch to CAWI and send a link to respondent.

System is not intended to hide interview from Interviewer during the data collection process.
Disabled questions are not exported.

No. This is not possible. You can’t ‘self-destruct’ an interview like this and if you attempted to implement your hypothetical design, the software should have already told you so. Your locking question must be outside of the sections that it is locking by necessity. Correspondingly the interviewer will later be able to change it to expose sensitive content. So this is not satisfactory to protect the sensitive content.

This is nonsense in the CAPI interviewing. In CAPI interviewing the interviewer is the one recording the answers.

Use CAWI instead. At least for the sensitive part.

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Thank you Vitalii fro your answer.
I will consider doing that, although I’m afraid it would considerably complexify the process.