Combined logic in survey

Online experiments Pavlovia Surveys
1

Hi everyone,

I am trying to combine multiple logics in blocks of two. In other words, I’d like a question to display only if:

(VAR1 and VAR2 take certain values) OR (VAR2 and VAR3 take certain values) OR (VAR1 and VAR3 take certain values)

How can I do this? It seems to me that logics would only work with every two, i.e., like this:

{VAR1} <> ‘Column 1’ and {VAR2} <> ‘Column 4’

Thank you for any help you may be able to offer.

2

I assume you’ve tried brackets already.

My next approach would be to use some hidden expressions for each pair to simplify the final logic.

3

Thanks. Not only that, but any combined logic does not work. Neither within the same matrix nor if spread out across different questions:
{question1.Row 1} = ‘Column 2’ and {question1.Row 2} = ‘Column 2’

It only works if single:
{question1.Row 1} = ‘Column 2’

4

Please try editing the survey URL to 2024.1.0 from 2024.2.0 in case that helps.

5

Thanks, it does. And parentheses work for combined logic, too:

({question1.Row 1} = ‘Column 2’ AND {question4.Row 1} = ‘Column 2’) OR ({question1.Row 1} = ‘Column 2’ AND {question4.Row 2} = ‘Column 2’)

1 Like
6

Cool. I need to check but it might be that the combined logic would work in 2024.2.0 if the variables include their block names, e.g.

({block_1/question1.Row 1} = ‘Column 2’ AND {block_1/question4.Row 1} = ‘Column 2’) OR ({block_1/question1.Row 1} = ‘Column 2’ AND {block_1/question4.Row 2} = ‘Column 2’)
7

2024.2.0 does not seem to recognise booleans at all, at least for me. Only single logic works.

8

For reference, I have tried it on a different survey, a more complex one, and 2024.1.0 does not work for combined display logics.

9

Here is a survey which works (used different code) in both versions

https://run.pavlovia.org/pavlovia/survey-2024.2.0/?surveyId=446ace7c-1b82-41b9-abad-e95a1ee59ce9

https://run.pavlovia.org/pavlovia/survey-2024.1.0/?surveyId=446ace7c-1b82-41b9-abad-e95a1ee59ce9

If you have a survey that doesn’t work in 2024.1.0 but only contains a single block, please could you elaborate so I can test?

10

Thanks. This is the one I am struggling with. I am trying to show ‘Briefing 1’ to those who get at least 2/3 attention checks right and ‘Briefing 2’ to those who do not.

‘Briefing 1’:
({Adjectives 4.Row80} = ‘Column 1’ AND {Hexaco 4.Row78 = Column 4’) OR
({Adjectives 4.Row80} = ‘Column 1’ AND {Goals 2.Row31} = ‘Column 3’) OR
({Hexaco 4.Row78} = ‘Column 4’ AND {Goals 2.Row31} = ‘Column 3’)

‘Briefing 2’:
({Adjectives 4.Row80} <> ‘Column 1’ AND {Hexaco 4.Row78 <> Column 4’) OR
({Adjectives 4.Row80} <> ‘Column 1’ AND {Goals 2.Row31} <> ‘Column 3’) OR
({Hexaco 4.Row78} <> ‘Column 4’ AND {Goals 2.Row31} <> ‘Column 3’)

However, ‘Briefing 1’ is always displayed, no matter what, and ‘Briefing 2’ is never.

11

I’ve extended my demo and discovered that the issue is probably that block_1/ isn’t needed for the very first term in the logic

({question1} = true and ({question2}= false or {question2} empty) and ({question3} = false or {question3} empty) 
or ({question2} = true and ({question1}= false or {question1} empty) and ({question3} = false or {question3} empty) 
or ({question3} = true and ({question2}= false or {question2} empty) and ({question1} = false or {question1} empty)

works in 2024.1.0 and is switched by question1 only in 2024.2.0

({block_1/question1} = true and ({block_1/question2}= false or {block_1/question2} empty) and ({block_1/question3} = false or {block_1/question3} empty) 
or ({block_1/question2} = true and ({block_1/question1}= false or {block_1/question1} empty) and ({block_1/question3} = false or {block_1/question3} empty) 
or ({block_1/question3} = true and ({block_1/question2}= false or {block_1/question2} empty) and ({block_1/question1} = false or {block_1/question1} empty)

works in 2024.2.0