Howdy, Stranger!

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

Sign In Register

Quick Links

Categories

Supported by

Using data of previous subjects as a variable for counterbalancing

wishiknewprogrammingwishiknewprogramming
in JATOS

Hi everyone,

First of all, thanks for JATOS and for this great forum!

I am trying to create an experiment by using OSWeb. It starts with a questionnaire, and then A and B loops follow. Score of this questionnaire reveals tendency to a rare condition. Therefore, basically, there will be 2 groups of subjects and I want to compare their results.

My plan is to counterbalance the loops within those groups, and to do so, use the data of the previous subjects. To be more clear, it might be better to explain: let's say, Jonah started the experiment. He scored very low at the beginning so he (presumably) has this rare condition. Now he will take the A and B loops and script should counterbalance their order. However, only 1 of the previous 50 subjects, Audrey had this condition and her loop order was A-B. Therefore, I want the script to access the data of Audrey, and unlike her, I want Jonah to take B loop first.

Is it possible to access this specific part of the data from previous subjects, and if so, can I use this as a variable in the script?

Thank you for your help in advance.

Best regards,

Jonah

Comments

  • elisaelisa
    edited September 2020

    Hi Jonah,

    In JATOS, you can't access a specific part of the data as such (data are protected in the database) but what you can do is store the relevant information into the Batch Session. This is visible to any participant in the same batch, outlives study runs, and is accessible from the JavaScript. So it sounds like it's what you need.

    See:

    http://www.jatos.org/Session-Data-Three-Types.html#comparative-overview

    And:

    http://www.jatos.org/jatos.js-Reference.html#functions-to-access-the-batch-session

    You'll probably simply need

    jatos.batchSession.add and jatos.batchSession.get

    So after each participant finishes the questionnaire, use jatos.batchSession.add to store their score (or a boolean about whether you think they have the rare condition) and their counterbalancing order. Additionally, if you think they have the rare condition, use jatos.batchSession.get to figure out which counterbalancing order you want.

    Let us know if you need more details, but that should get you started.

    Best

    Elisa

  • wishiknewprogrammingwishiknewprogramming

    Hi Elisa,

    That will be very useful, thanks for the fast answer!

    Best,

    Jonah

Sign In or Register to comment.
Sebastiaan Mathôt » v2.0.18 » Copyright 2011 — 2019 » Vanilla flavored » License

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