[solved] Questionnaire issues

argiro · September 2014

Hi I am having trouble with some parts of a questionnaire
I want through opensesame to have the following:
if one presses the "next" button without having checked one or more of the available checkboxes to warn the user and not let him/her continue

and on another note

how can i control one of the checkboxes? e.g. if i have 6 checkboxes in a question, the user can select any one the five (one or more) except for one checkbox the 6th one...if that is selected it cannot select any of the others and has to press "next" for the next question....

Thanks ahead of time for the help

sebastiaan · September 2014

You can find a very useful discussion about about validating form input here:

http://forum.cogsci.nl/index.php?p=/discussion/197/

Essentially, to validate form input, you will need to implement some checks in an inline_script and, if necessary, run the form until your criteria are met. Forms don't have any built-in validation functionality, so -- to answer your second question -- you cannot disallow participants from checking too many checkboxes. However, you can check afterwards whether participants have checked too many checkboxes, and, if so, execute the form again.

I cannot say anything more specific, because you would need to provide more details about the implementation of your experiment.

Cheers!
Sebastiaan

argiro · September 2014

Thanks for your response

So for example in the partial script below (which is modification of your questionnaire demo) I want to NOT allow participants to move to the next question unless at least one checkbox has been clicked...as in the consent form...the code below

# Generated by OpenSesame 2.8.3 (Gutsy Gibson)
# Wed Sep 10 19:29:22 2014 (nt)
# <http://www.cogsci.nl/opensesame>

set mouse_backend "legacy"
set subject_parity "even"
set height "768"
set font_family "mono"
set font_italic "no"
set synth_backend "legacy"
set title "Questionnaire"
set coordinates "relative"
set start "experiment"
set sampler_backend "legacy"
set transparent_variables "no"
set foreground "white"
set font_bold "no"
set description "Default description"
set background "black"
set decline_message "You need to accept the consent form to participate!"
set font_size "18"
set keyboard_backend "legacy"
set canvas_backend "legacy"
set compensation "0"
set bidi "no"
set subject_nr "0"
set width "1024"

define form_consent Consent
    set accept_text "Συνεχίζω!"
    set rows "1;4;1;1"
    set description "A simple consent form"
    set checkbox_text "Έχω καταλάβει την διαδικασία και επιθυμώ να συνεχίσω."
    __form_text__
    Το πείραμα θα αρχίσει με κάποια δημογραφικά στοιχεία και στη συνέχεια με την συσχέτιση χειρονομιών με κάποιες λέξεις που αναφέρονται σε ένα Χ αντικείμενο.

    Είναι απαραίτητο να είστε ακριβείς και γι' αυτό το λόγο δεν υπάρχει χρονικός περιορισμός στις επιλογές σας.

    Στο τέλος του πειράματος θα σας εξηγήσουμε τι ακριβώς μελετάμε. 


    Ευχαριστούμε για την συμμετοχή σας!
    __end__
    set form_title "<span size=24>Πειραματίσου μαζί μας!</span>"
    set decline_text "Όχι, ευχαριστώ"
    set decline_message "You need to accept the consent form to participate!"
    widget 0 0 2 1 label text="[form_title]"
    widget 0 1 2 1 label center="no" text="[form_text]"
    widget 0 2 2 1 checkbox var="checkbox_status" text="[checkbox_text]"
    widget 0 3 1 1 button var="accept_status" text="[accept_text]"
    widget 1 3 1 1 button text="[decline_text]"


define form_base Demographics
    set rows "1;1;1;1;1"
    set cols "1;1;1;1"
    widget 0 0 4 1 label text="<b>Μερικά απαραίτητα στοιχεία...</b>"
    widget 0 1 1 1 label center="no" text="Φύλλο"
    widget 1 1 1 1 checkbox group="gender" text="Γυναίκα" var="response_gender1"
    widget 2 1 1 1 checkbox group="gender" text="Άνδρας" var="response_gender1"
    widget 0 2 1 1 label center="no" text="Ελληνική γλώσσα"
    widget 1 2 1 1 checkbox group="language" text="Μητρική" var="response_language1"
    widget 2 2 1 1 checkbox group="language" text="Μη μητρική" var="response_language1"
    widget 0 3 1 1 label center="no" text="Ηλικία"
    widget 1 3 3 1 text_input var="response_age1"
    widget 0 4 4 1 button text="Οκ!"

sebastiaan · September 2014

I want to NOT allow participants to move to the next question unless at least one checkbox has been clicked...as in the consent form...the code below

Right, so that's what the discussion I linked to above is all about . See especially this comment:

http://forum.cogsci.nl/index.php?p=/discussion/comment/845#Comment_845

argiro · September 2014

okay last message i hope...
i did look at the previous messages and played with the sample code but i am still having trouble. So i modified the code for the rating scale for checkbox while maintaining all other code intact but i still have a problem....that is, you can leave the checkbox unchecked and it will still go on to the next trial....what am i missing?

Code below:

set mouse_backend "legacy"
set subject_parity "even"
set response2 ""
set height "768"
set sound_buf_size "512"
set font_italic "no"
set custom_cursor "yes"
set synth_backend "legacy"
set title "Example for Sylvia"
set coordinates "relative"
set start "experiment"
set sampler_backend "legacy"
set font_family "mono"
set foreground "white"
set font_bold "no"
set description "In this example it is checked whether the text input is an integer between 0 and 100."
set background "black"
set font_size "18"
set keyboard_backend "legacy"
set canvas_backend "legacy"
set compensation "0"
set subject_nr "0"
set width "1024"

define inline_script create_form
    ___run__
    from libopensesame import widgets

    form = widgets.form(self.experiment, cols=[3,2], rows=[1,1,1,1,1,1,1,1], spacing = 10)
    titel = widgets.label(form,  text='Ongezond snacken is iets...', center=False)
    vraag1 = widgets.label(form,  text='1. dat ik regelmatig doe', center=False)

    instructie= widgets.label(form, text='1 = helemaal oneens, 7 = helemaal eens')

    ratingScale1 = widgets.checkbox(form, var='ongezond_SRHI_item1')

    nextButton = widgets.button(form, text='Verder')

    form.set_widget(titel, (0,0), colspan=1)
    form.set_widget(vraag1, (0,1))

    form.set_widget(instructie, (1,0))
    form.set_widget(ratingScale1, (1,1))

    form.set_widget(nextButton, (0,7), colspan=2)
    form._exec()
    __end__
    set _prepare ""
    set description "Executes Python code"

define sequence experiment
    run warning_message "never"
    run create_form "never"
    run inline_script "always"

define inline_script inline_script
    ___run__
    while True:

        incomplete = False

        exp.items["create_form"].run()

        if (self.get("ongezond_SRHI_item1") == "None" 
            ):
            incomplete = True

        if not incomplete:
                break

        else:
            exp.items["warning_message"].prepare()
            exp.items["warning_message"].run()

    __end__
    set _prepare ""
    set description "Executes Python code"
define sketchpad warning_message
    set duration "1000"
    set description "Displays stimuli"
    draw textline 0 0 "You didn't answer all the questions..." center=1 color=white font_family="mono" font_size=18 font_italic=no font_bold=no show_if="always" html="yes"

sebastiaan · September 2014

Hi,

You're very very close. The problem was that an unchecked checkbox sets its response variable to 'no', and not to 'None'. This explained in more detail here:

http://osdoc.cogsci.nl/forms/form-variables/#checkbox

So the script below should do the trick. For future reference, you don't need to implement the form in an inline_script (although you can). You can also implement the form using a form_base plug-in, and only use an inline_script for the checking part.

Cheers!
Sebastiaan

while True:
    incomplete = False
    exp.items["create_form"].run()
    print self.get("ongezond_SRHI_item1")
    if self.get("ongezond_SRHI_item1") == "no":
        incomplete = True
    if not incomplete:
            break
    else:
        exp.items["warning_message"].prepare()
        exp.items["warning_message"].run()

Scarlett · October 2014

I created an experiment that runs perfectly on a MacBook Pro (OS X; OpenSesame 0.27.4). However, when I try to open the experiment file on my testing machine - a PC (running OpenSesame 2.8.2) - it gives an error message that reads: Unexpected error: exception message. Exception type: WindowsError

sebastiaan · October 2014

Hi Scarlett,

As a first step, you could upgrade to OpenSesame 2.9.0. However, in case this doesn't resolve the issue: Do you see additional output in the debug window? And/ or do you see a opensesame.exe.log file in the OpenSesame folder? If so, please post!

Cheers,
Sebastiaan

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