Howdy, Stranger!

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

Supported by

Participant number and running a sequence

For my new experiment I want to make sure that I am blind to the condition of the participants, because of bias.
What I want is the following. Two participants (each their own computer) will be a pair in my experiment. I want them to be in the same condition, so that the same sequence will be run. So:

Participant 1 & 2, 7 & 8, etc --> condition 1
Participant 3 & 4, 9 & 10, etc --> condition 2
Participant 5 & 6, 11 & 12, etc --> condition 3

I made the experiment, but not this part yet because I am not sure how to do this. I thought about using inline script, but I messed around a bit and it didnt work.
I also thought about using a block, and experimented with that, but it didn't work either. I'm not sure if that is possible.
If I have to type a lot of numbers, that's totally fine, because I will not need many participants.

I hope I made it clear... if not, please do tell!

Comments

  • Hi,

    I might misunderstand, but how can you be blind to the condition if it is you that define the algorithm for assigning participants to condition? Of course you could use randomization (assigning conditions randomly), but then you don't have control over the number each condition is picked. Maybe you can elaborate a little if it doesn't make sense what I say.

    Anyway, if you don't really care for randomization you can keep it simple and do something like this:

    # has to be put in an inline_script (ideally prepare phase) in the beginning of the experiment
    conditions = [cond1,cond2,cond3]
    group1 = [1,2,7,8]
    group2 = [3,4,9,10]
    group3 = [5,6,11,12]
    
    if var.subject_nr in group1:
        var.condition = conditions[0]
    elif var.subject_nr in group2:
        var.condition = conditions[1]
    elif var.subject_nr in group3:
        var.condition = conditions[2]
    

    Good luck,

    eduard

    Buy Me A Coffee

  • ''I might misunderstand, but how can you be blind to the condition if it is you that define the algorithm for assigning participants to condition?''

    You are correct, it is not perfect, but at least it is better than making separate Open Sesame files per condition, I guess.

    Thank you. I do still receive the error that I have to define ''cond1'' etc.
    Can you help me with that too?

  • You have to replace cond1,cond2,cond3 with the conditions that you have. For example, if your three different conditions (that you mention in your first post), differ in terms of whether the stimulus is visual, auditory, or both, it would look like

    conditions = ['visual','auditory','both']

    Buy Me A Coffee

  • edited September 2018

    Ah. In each condition, participants will read a different piece of text. So I created three different loops.
    Here is a picture.

  • Yes, in this case conditions can be anything(e.g. 'one','two','three'). Just make sure than you put in the run if field of each sequence something like [conditions] = 'one'

    I attach an example experiment below.

    Eduard

    Buy Me A Coffee

  • Unfortuantly the experiment you attached doesn't want to run, saying that ''The variable 'condition' does not exist''.

  • If you run it, you need to specify a subject_nr that was coded (1-12).

    Buy Me A Coffee

  • edited September 2018

    Your experiment works now, indeed. Mine still does not. It still says ''name 'cond1' is not defined'', also when I run it with a participant number.

  • edited September 2018

    Well, you haven't changed the experiment as I told you. cond1 is a variable and does not exist until you assign a value to it (e.g. cond1 = 1). "cond1" is not a variable but a string, it does always exist, once you have defined it (e.g. some_variable = "cond1"). So to make your experiment work, when defining your variables you have to use strings not variables (unless variables were defined previously).

    Buy Me A Coffee

  • I think you mean that I have to put it between ' ' signs. I did not know you were referring to that, and I am sorry.

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