Frequency assessment

Marc

Hello,
I need help to assess the frequency of a button press. In other words, how often a person pressess the same button (there will also be just one possible button to press).

Thanks for helping,
Marc

eduard

Hi Marc,

How is your experiment structured? Depending on that, the implementation varies quite a bit. Here is just one example of doing it:

cv = canvas()
kb = keyboard()
duration=10000 # 10 s trial

cv.text('Please press the buttons as often as you want')
counter = 0
t0 =cv.show()
while clock.time-t0>duration:
    kb.get_key()
    if k != None:
        counter += 1
        kb.flush()
cv.clear()
cv.text('You pressed the key %s times')%counter
cv.show()
clock.sleep(3000)

Does it help?

Eduard

Marc

Hi Eduard,
when executing the script, OpenSesame directly reports that it succesfully finished the trial.

Participants are not going to look at the monitor so it does not matter whether they can see how long and often they press the button. The button press will be assessed by a response box and the experiment takes 7 minutes.

eduard

My bad. Change the 'bigger than' to a 'smaller than'.

If you have a special button box, you can't use the keyboard item. How does your responsebox communicate with Opensesame?

Eduard

Marc

I changed it but still have the same problem.

I don't know yet because the box is only available in my institution.

eduard

Sorry again.

This code should work now (at least it is tested...)

cv = canvas()
kb = keyboard()
duration=10000 # 10 s trial

cv.text('Please press the buttons as often as you want')
counter = 0
t0 =cv.show()
while clock.time()-t0<duration:
    k,t = kb.get_key()
    if k != None:
        counter += 1
        kb.flush()
cv.clear()
cv.text('You pressed the key %i times'%counter)
cv.show()
clock.sleep(3000)