Experiment building - on online experiments
Notes related to setting up behavioural experiments and such.
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On online experiments
Online experiments, as convenient as they are, means there are many things you can no longer control for - display time, hardware response time, browser details, whether it is a computer or a phone (I have a years-old phone and I wouldn't trust its timing), headphone quality (there are some tests you can do to get a gauge of this)
Browsers
Assume that browsers tend to merge movement into 60Hz intervals - or whatever monitor-limited speed it's drawing at - so negating the effects of a 1000Hz keyboard / mouse / button device.
Also, multitasking in browsers varies more between browsers. Maybe there's a video stream in another tab making things... more varied.
Since it's not something you can control, at all, it's not a good environment for precision timing.
Easy for questionnaire style stuff, though.