Flickering images

[Angus]

Hi,

I’m creating a fairly simple reaction experiment. 3 images appear on the screen followed by a direction cue (up/down) that participants need to respond to. All is working fine, except that on some browsers (e.g. google chrome) the images and arrow cue flash up lower on the screen before they are meant to. This means that the participants are made aware of what the response is going to be before they are meant to react to it.

I don’t get this problem at all on others browsers, such as firefox, and others like safari seem to only sometimes have the issue.

Cheers,
Angus

[Author]

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