Request for Assistance with Transitioning OpenSesame Experiment to JATOS

mila · May 1

Hi Everyone,

I plan to use OpenSesame for conducting a self-paced reading experiment. I have already used OpenSesame a few years ago to conduct the same experiment, and used an inline script for that purpose.

Now, I aim to collect data online using JATOS. However, I understand that JATOS does not support inline script items. Could you advise on how I might adapt or modify my experiment to be compatible with JATOS?

Alternatively, if you know of any other tools or methods that could serve this purpose, I would appreciate your recommendations.

I've attached the inline script from my previous study for your reference:

PREPARE PHASE:

# Create a keyboard that only accepts a space
my_keyboard = keyboard(keylist=['space'])

# Create a list of canvas objects with one target each
target_canvas_list = []
for target in var.Stimuli.split():
	target_canvas = canvas()
	target_canvas.text(target)
	target_canvas_list.append(target_canvas)

RUN PHASE:

# Loop through the list of canvas objects, show them, collect a keypress, and
# set the response time as an experimental variable

for target_nr, target_canvas in enumerate(target_canvas_list):
	t0 = target_canvas.show()
	key, t1 = my_keyboard.get_key()
	var.set('response_time_%d' % target_nr, t1-t0)

Thank you very much for your help.

sebastiaan · May 3

Hi @mila ,

You can use Canvas objects in an inline_javascript item more or less as you can in a Python inline_script , so that part of your script can be easily converted:

https://osdoc.cogsci.nl/4.0/manual/javascript/canvas/

However, there is no JavaScript equivalent of a Keyboard object, so you need to use the GUI keyboard_response item instead.

Together, this likely means that you'll have to implement a solution using a loop item with a sequence item inside with an inline_javascript that presents one Canvas followed by a keyboard_response .

Hope this helps!

— Sebastiaan

mila · May 6

Thank you very much for your response.

But I forget to mention that in this experiment I need to record two responses:

Reaction time for each word within the stimulus.
Acceptability judgment for each sentence on a 7-point scale.

How can this be done if I will use a keyboard_response?

sebastiaan · May 7

Hi @mila ,

In general terms, you would need to create a sequence that presents a single word (with either an inline_javscript or sketchpad ) and collects a single key press (with a keyboard_response ). And this sequence would then be inside a loop so that you do this multiple times. Together, this structure would then roughly correspond to what is now a single for loop in your inline_script item.

And after this loop you would then likely have a form_multiple_choice or inline_html item to collect the acceptability judgment.

So that's a rough outline. Of course the details depend entirely on the specifics of your experiment!

— Sebastiaan

mila · May 8

Hi Sebastiaan,

Thank you very much for your assistance.

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Request for Assistance with Transitioning OpenSesame Experiment to JATOS

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