Hi all,

I am trying to create a trial where participants enter codes - followed by pressing 'next' for each code. When they want to stop entering codes, they should press 'stop'.

This means I need to have page that shows them a place where they can enter the codes, and below a button that says 'next' and a button that says 'stop'
The script with only a button for next, works fine. But I cannot figure out how to create two buttons and how to create a command that stops the trial when they press 'stop'.

Here's what I have so far:

<openended codes>
/stimulusframes=[1=codes,input]
/position = (50%, 50%)
/linelength = 40
/numlines = 1
/skip = [values.time > 600000]
/ontrialend = [values.time = values.time + openended.codes.latency]
/ontrialend = [values.input = values.input + 1]
/buttonlabel = "next"
</openended>

Any help would be highly appreciated!

You cannot add and additional button to an <openended> element. What you can do is instruct the participant to e.g. simply type "stop" into the <openended>'s text box and then /stop the block based on that response.

<block myblock>
/ trials = [1 = myopenended]
/ stop = [openended.myopenended.response == "stop"]
</block>

<openended myopenended>
/ stimulusframes = [1=mytext]
/ branch = [openended.myopenended]
</openended>

<text mytext>
/ items = ("Enter something. To quit, type ~"stop~" into the textbox")
/ position = (50%, 40%)
</text>

thanks a lot! good to know its not possible. I previously used to instruct them to type 'stop' - but I work with kids and this turns out too difficult when they have to work independently. Any ideas on other options?