Howdy, Stranger!

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

Supported by

[solved] seek help - visual search paradigm

edited July 2014 in OpenSesame

I am a new user of OpenSesame and I know not much about programming.

However, as I am recently conducting a experiment that need to set up a computerized task for the participants, I hope that you guys can give me some pieces of advice how I can set up the task by using OpenSesame.

My task is using a visual search paradigm. Basically the task is that participants have to pick the odd pictures from a 4 x 4 picture grid (1 target, 15 distractors). I wish to program a randomized task that it can randomly assign a target picture to the grid at a random position and the rest will fill up with the distractors randomly. If a position is taken by the target in the present trial, the target in next trial will be placed to anther location. Until 16 places are used. I have 4 targets per condition, resulting in a total of 64 trials for a condition (total 4 conditions). My task aims at investigating time spent from the start of the trial to the hit of the target. Is it possible to make it? Do you guys have a script/tutorial similar to my setting? Or do you have any idea to make the setting like this?

Thank you guys!!

Comments

  • edited 3:55PM

    Hi,

    I made an example experiment in which the participant has to search for a red circle (the target) among 15 distractors, placed on a 4x4 grid. A block has 16 trials, and the target will never appear on the same location within a given block. Feature search and conjunction search are varied between blocks. Is something like that what you're looking for?

    You can find the example experiment here (download, change the extension into '.opensesame' instead of '.txt', and open as normally):

    More information is given in the comments in the example experiment.
    You can adapt this script to your specific purpose, and don't hesitate to ask any further questions!

    Best,

    Lotje

    Did you like my answer? Feel free to Buy Me A Coffee :)

  • edited 3:55PM

    Hi Lotje,

    Thank you for your example. I start using OpenSesame.
    I looked at your script, but I have a question (this is important for my experiment):
    I want to know if it is possible to make a "supra" list for that a target (image + sound) is heard once per participant and the sound is different for each participant. I have 8 images and 9 sounds for each image, so 72 possibilities. In experiment, a participant will hear and see only 8 possibilities every time.
    For example, in your experience, it is as if I wanted the red round is seen once in the condition "red square" per participant and in other positions for other participant. I have therefore need 16 participants for the position of the red round is seen in all positions in this condition.
    I hope to be understood.
    If this is not the case, tell me and I'll try to reformulate it.

    Thank you in advance for your help.

    Best,

    Lucie

  • edited 3:55PM

    Hi Lotje,

    I'm sorry for my previous post but I managed to solve my problem.

    Best,

    Lucie

  • edited 3:55PM

    Good to hear that you figured it out!

    Buy Me A Coffee

  • edited 3:55PM

    Could you please tell me how you solved that? Because I'm stuck with a similar thing. I have a set of words which are supposed to be presented along with the corresponding audio file. For eg. ba(written word) with ba(sound). This should happen simultaneously. and there are about 15 such words and audios.

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