Unless I am misunderstanding the link provided by LaurenK, which I have referred to many times, there are issues that prevent this method from working. For one, the authenticator, as identified by multiple people, actually creates problems and has been advised by some Support personnel to be thus avoided. The second, and this is key, is this support page states you must redirect participants to the second survey from the first and that they will be redirected immediately (upon completion of the first). In a longitudinal study, you don't want them to be redirected immediately, there is a time delay between surveys... Rather, the idea is that different surveys (or components of the same survey, or the same recurring survey) are sent at different times and or days. I think the longitudinal support page needs to be reconsidered and updated.
I had the same exact issue. What I did was I got rid of the authenticator and added the RandomID (like you), added it to the end of the link for the pre-survey and then the follow on survey, and redirected to the second survey from the first under Customize for End of Survey. This may not work if you want there to be a time gap between surveys though. I think the authenticator is unnecessary, the RandomID will connect the data to the same participant without them having to "sign in" or provide a password (which never worked for me and I tried a few different ways).I ended up combining everything together under 1 survey (pre, baseline, and EMA (time diary for 30 days)) because I have a lot of information that needs to pipe through the entire thing but now I don't know how to distribute the different blocks... Hope this helps!
I modelled my survey after Michelle’s screenshot above but can’t figure out how to distribute the separate groups (of blocks) on different days. It’s a time diary survey (EMA) for 30 days post Screener + Baseline. I decided to keep the entire thing in one survey because I need to pipe in at most 8 unique answers from the Screener + Baseline into the daily surveys (it’s a name generator); I tried linking surveys together and piping information via ED and ExternalReferenceData but it wasn’t working (followed the Qualtrics site). Participants will provide up to 8 unique names in the Screener + Baseline and then we will ask if they’ve spoken to these individuals each subsequent day for 30 days. Although keeping the Screener + Baseline and EMA (time diary) components in 1 survey is complicated and a beast, it seemed to be the easiest way to ensure the names they provided were piped into the EMA portion each day. Following Michelle’s survey flow, how do I send Group: Day 1 to participants (a
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