@Akdashboard Thank you for the suggestion. Yes I will be running a lab experiment but I'd have to wait for mid-semester to recruit undergrad participants. I was trying to do a pretest online but you're right the validity would be really low. I guess I'll just give up the pretest.
Thanks @bansalpeeyush29 But the issue is not whether respondents are able to hear, which can be easily sorted out with a screener. The key is that I need to know how volume level affects their responses. So their device volume information during the audio play would be crucial for my study. I could ask them to set their device volume to let's say 50% during the study. But it would be better if I could double-check whether they cooperated or not.
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