Timed Responses

KerAnn

In my experiment there are three different response results but only one type of keyboard response. Additionally, people are able to have unlimited responses in every trial. I would like to separate the responses into bins per se. For example, the participant only hits the space bar as a correct and accepted response but can do this a countless amount of times. These responses could either be correct, somewhat-correct, or incorrect based on time of responding (using the spacebar). Would this be done by using the keyboard_response item?

lvanderlinden

Hi @KerAnn ,

Are you running your experiment online or locally?

Also, when does a trial end? You say that participants can press space bar for a countless number of times, but I assume that there is some type of timeout then?

Cheers,

Lotje

KerAnn

Hi @Ivanderlinden, thanks for your questions!

The experiment will be ran fully online as of right now. The trials end at three different times (this is a timing study). The trials end at 4s, 8s, and 16s (which is defined using the block_loop items) and within these confounds the participants can hit the spacebar as many times as they desire.

Thank you,

Kerry Buckhaults

lvanderlinden

Hi @KerAnn ,

I think you could do the following:

• Wrap a loop-sequence combination around your keyboard_response item
• Set the number of repetitions of this new loop to something very high, like 1000x
• Use the break-if statement of this loop to break the loop when a certain criterion is met
• This criterion (here: the time passed) could be set and evaluated with some lines of javascript inline code.

I attached an example experiment. Hope this helps!

Cheers,

Lotje

6831.osexp