Hidden Variables.

Hidden Variables are auto selected if a respondent meets your logic conditions. They're like tags except they're coded in an invisible question. Hidden variables are never seen by respondents in the survey (but are seen by you in the analysis + downloads).  

Hidden variables can be borrowed from, which is very useful for Loops in particular as it enables loop display logic.    

1: Hidden Variables Editor

To create a Hidden Variable:

1. Go to the Build tab
2. Click +Add Question / Section and choose "Hidden Variables"
3. Name your hidden question and enter your hidden variables.

4. Click the "Logic" icon (top right) and add your display logic for each variable.
   1. If respondents meet your criteria, that variable will be auto selected at this question.
   2. If no display logic added, then all variables are auto selected.

5. Borrow from Hidden Variables (where applicable) - this is particularly useful for loops as it enables loop display logic.

Main Use Cases:

• House Loops with Display Logic to be Borrowed from (per example above)
• House Tags to be Charted in Analysis
• Group Answers
• Stitch Questions Together (per example below)

2: Hidden Variables Preview

Nothing to see here, the question's hidden!

But worry not, respondents will invisibly auto select whatever variable's they've qualified for in your logic per the Analysis below.

3: Hidden Variables Analysis

Hidden variables are analysed exactly the same way as Choice Questions.

Here's how the last use case (Stitch Questions Together) appears in your Analysis.