For my master's thesis I'm thinking of a rather complex survey design. I want to study the thoughts and opinions of people on a set of occasions in which they consumed news, which they also need to describe themselves.

My question is: is it possible to let users add fields in a Multiple short text question? I could of course set the amount of rows, but that either limits the respondent (if I create for example 5 rows) or is too big/looks too intimidating (if I create 15 rows)

Example:
1. select subjects you read/saw/heard news about: [Multiple choice]
1a [user input = ✓ treaty between the EU and Ukraine]
1a.1 where and when did you get news about it? [Multiple short text]
1a.1a [user input = in the morning train to work]
1a.1b [user input = on facebook when laying in bed before sleeping]
1a.1x "Add additional occasion"-button
1a.2 which medium did you use to get news about this subject? [Multiple short text]
1a.2a [user input = Metro]
1a.2b [user input = CNN]
1a.2x "Add additional medium"-button
1b [user input = ✓ US presidential elections]
1b.1 where and when did you read about it? [Multiple short text]
1a.1a [user input = on the evening news]
Etc...

Yes, but you have to define the answer options on forehand. Then you can hide them using Expression Manager on sub-question-level untill something is typed in the previous text field.

Example with 10 input fields: www.surveyonderzoek.nl/onderzoek/index.php/798391?newtest=Y#

lss-file as attachement