Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Supported by

How to show the responses from practice trials to participants?

edited January 2018 in OpenSesame

Hi OpenSesame developers,
Thanks for creating such a useful tool for us! Almost all the problems arising from my experiment building process were solved by watching the tutorials and reading various posts on this forum!

Now I am trying to show the participant's responses after the practice trials (it's a rating task ranging from 1-7. There is no right or wrong answer, but I would like to check participants' responses after practice trials before they enter the main experiment to see if they need more instructions or practice). I came across this post
forum.cogsci.nl/index.php?p=/discussion/comment/12683/ and also the manual osdoc.cogsci.nl/3.1/manual/response/keyboard/, but what I wanted was all the responses from practice trials instead of the previous trial. Is this possible? I tried adding a sketchpad after the practice block and write [response], as the variable name of the responses is 'response', but it didn't work...

In addition, is it also possible to add a feedback if the difference in responses of the previous two trials is, say, smaller than 2 (as I would expect more difference given the previous instructions they received)?

Thanks a lot,
Mengzhu

Comments

  • edited February 2018

    Hi Mengzhu,

    I tried adding a sketchpad after the practice block and write [response], as the variable name of the responses is 'response', but it didn't work...

    If you try the same with a feedback item instead of a sketchpad does it work then? (The rationale why it could work is explained here: http://osdoc.cogsci.nl/3.1/manual/prepare-run/#sketchpad-and-feedback-items

    In general, what you describe is very possible in python scripts (that is inline_scripts).

    For example. the code below adds the score of some response variable to a string that you can then present at the end of the practice in a feedback item. If you want to add some control layers (difference between any two must be smaller/bigger than 2, you can also add this here, you just have to work out the logic)

    # this inline_script has to be put after the response was given and the script has to be in the run phase
    
    # you also have to create a variable that captures all the responses before the practice loop
    # e.g.: var.practice_responses = ' '
    # I assume it exists for this script
    
    if var.practice == 'yes': # consider responses only when we are in the practice phase
         var.practice_responses += var.response # add the response
         var.practice_responses += '\t' # add some whitespace to have a better view
    
    # Later you can put a textfield into a feedback item and put [practice_responses] as text and you will see all the responses
    

    I hope this make somewhat sense to you.

    Eduard

    Buy Me A Coffee

  • Hi Eduard,
    Thanks very much for your reply.
    Yes, it does work if I use a feedback item. But when I tried the inline_script you've written (the script was in the run phrase and was after the practice_loop), but an error occurred saying:

    'The variable 'practice' does not exist. Tip: Use the variable inspector (Ctrl+I) to see all variables.'

    The weird thing was 'practice' was one of the variables when I checked using both 'variables inspector' or the results file... (someone had the same error message, but I haven't figured out a solution yet http://forum.cogsci.nl/index.php?p=/discussion/212/open-break-from-a-loop-item)

    What problem was this you reckon?

    Thanks a lot,
    Mengzhu

  • Hi Mengzhu,

    Can you upload your experiment? What you describe sounds a little weird. If the variable cannot be found, it shouldn't be written to the logfile.

    Eduard

    Buy Me A Coffee

  • Hi Eduard,
    Please find the mini version of my experiment in the attached.
    Thanks a lot,
    Mengzhu

  • Hi,

    So, the variable var.response was not defined. Neither was var.practice_responses. As I mentioned in the comments of the code, you have to initialize them in order for the code to work. Also, the inline_script has to be put in the loop, not after the loop. There were a few other little hickups in the code, but the attached experiment should work now.

    Good luck.

    Eduard

    Buy Me A Coffee

  • It worked. Thank you :)

Sign In or Register to comment.

agen judi bola , sportbook, casino, togel, number game, singapore, tangkas, basket, slot, poker, dominoqq, agen bola. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 50.000 ,- bonus cashback hingga 10% , diskon togel hingga 66% bisa bermain di android dan IOS kapanpun dan dimana pun. poker , bandarq , aduq, domino qq , dominobet. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 10.000 ,- bonus turnover 0.5% dan bonus referral 20%. Bonus - bonus yang dihadirkan bisa terbilang cukup tinggi dan memuaskan, anda hanya perlu memasang pada situs yang memberikan bursa pasaran terbaik yaitu http://45.77.173.118/ Bola168. Situs penyedia segala jenis permainan poker online kini semakin banyak ditemukan di Internet, salah satunya TahunQQ merupakan situs Agen Judi Domino66 Dan BandarQ Terpercaya yang mampu memberikan banyak provit bagi bettornya. Permainan Yang Di Sediakan Dewi365 Juga sangat banyak Dan menarik dan Peluang untuk memenangkan Taruhan Judi online ini juga sangat mudah . Mainkan Segera Taruhan Sportbook anda bersama Agen Judi Bola Bersama Dewi365 Kemenangan Anda Berapa pun akan Terbayarkan. Tersedia 9 macam permainan seru yang bisa kamu mainkan hanya di dalam 1 ID saja. Permainan seru yang tersedia seperti Poker, Domino QQ Dan juga BandarQ Online. Semuanya tersedia lengkap hanya di ABGQQ. Situs ABGQQ sangat mudah dimenangkan, kamu juga akan mendapatkan mega bonus dan setiap pemain berhak mendapatkan cashback mingguan. ABGQQ juga telah diakui sebagai Bandar Domino Online yang menjamin sistem FAIR PLAY disetiap permainan yang bisa dimainkan dengan deposit minimal hanya Rp.25.000. DEWI365 adalah Bandar Judi Bola Terpercaya & resmi dan terpercaya di indonesia. Situs judi bola ini menyediakan fasilitas bagi anda untuk dapat bermain memainkan permainan judi bola. Didalam situs ini memiliki berbagai permainan taruhan bola terlengkap seperti Sbobet, yang membuat DEWI365 menjadi situs judi bola terbaik dan terpercaya di Indonesia. Tentunya sebagai situs yang bertugas sebagai Bandar Poker Online pastinya akan berusaha untuk menjaga semua informasi dan keamanan yang terdapat di POKERQQ13. Kotakqq adalah situs Judi Poker Online Terpercayayang menyediakan 9 jenis permainan sakong online, dominoqq, domino99, bandarq, bandar ceme, aduq, poker online, bandar poker, balak66, perang baccarat, dan capsa susun. Dengan minimal deposit withdraw 15.000 Anda sudah bisa memainkan semua permaina pkv games di situs kami. Jackpot besar,Win rate tinggi, Fair play, PKV Games