One-second slide stimulus

[Leisha Wharfield]

Hi, Petra,

I think that you should be able to achieve this by using slides that 
have different states on them and setting the properties differently for 
the different states, but I can't figure out how to do that, so my quick 
fix would be to have two slides: Slide1 would last for 1 second and show 
both the picture and the text; Slide2 would last until the key is 
pressed and show only the text.

If someone pressed the key in less than one second you could know by 
allowing the Response in Slide one and checking for it via an Inline 
Object placed between the 2 slides. So if the Response is made via 
Slide1, skip Slide2.

Finally, I think you could use just one Slide if you placed an Inline 
Object after it that counted one second then redrew the slide without 
the picture.

Leisha Wharfield
Decision Research
Eugene, Oregon, USA

SCHMID Petra wrote:

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>hej,
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>I have 20 slides which I present in a sequential order. Each slide consists of one picture and one text field. I'd like that the picture disappears after one second but the text field should disappear only when the participant has pressed a certain key on the keyboard. That's important because I'd like to measure the reaction time. How can I do this?
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>petra
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