This video will show you 3 ways to create pop-up messages in your Qualtrics survey (which is a function not natively used in Qualtrics) so survey respondents can get more information. Respondents don't like long surveys and questions, so this allows them to click at their preference.
In short, when I have administered surveys with over a 90% response rate, techniques like this that made the survey questions appear short (while still providing useful information) were among the crucial contributors.
There are yet more ways to do this - do a Google search for "CSS collapsible" for an example. However, I posted my 3 favorite approaches and I hope you will find them useful.
LINKS TO HTML AND JAVASCRIPT CODE EXAMPLES (I have updated and improved some of the code below since originally posting this video).
Example 1 - Text hover/Tooltips: https://controlc.com/6e29c252
Example 2 - Link pop-up (updated and optimized): https://controlc.com/39352eba
Example 3 - Button pop-up: https://controlc.com/63b6ec58
VIDEO SUMMARY
Introduction - 0:00
Explanation - 0:07
Example 1 (text hover tooltips) - 0:22
Example 2 (Link pop-up) - 1:32
Example 3 (Button pop-up) - 2:43
Outro - 4:17