Only 1 repetition of each stimulus and no correct response

albertmrm

Hi community,

I've been struggling with some aspects of my experiment (I'm fairly new to OS). This is the thing, I need to play an audio file after which the participants need to answer 2 questions. The thing is that this is a sociophonetic perception test, so I need to know the participants' thoughts about certain features of the audio, which means there is no correct response.

The problem: I need to play each audio once and the participants need to answer with "yes" or "no" to the questions I asked. When defining the variables I do this (and I can see where the problem is in this part):

Now, I do this because I need each audio to be played only once before each question, but if I do this, the logged responses are "s,s" for audio a, "n,n" for audio b and no logged response for audio c. If I do a full factorial design, each audio is played multiple times (which is not the idea).

Another problem is that, as I mentioned before, there are no correct responses. I just need all of them to be logged. This may sound a bit silly in an experiment with only two possible responses per question, but this is only the first part of my study and I will have to create a new one in which a single question can have 6 possible answers (and, again, I need to log them all, as none of them is correct, but each element provides specific information). So, whatever orientation you can give me here will definitely help me when I create the next experiment.

Another important thing you should know is that this experiment (and the following ones) will be executed online (with OSWeb). So, please, share solutions, options and thoughts that are supported by OSWeb (I recently learned that some features can't be applied to online experiments).

Thanks in advance for your help.

Albert

lvanderlinden

Hi Albert,

I can't really get my head around the design of your experiment. Could you upload it here? Perhaps that clears things up.

Best,

Lotje

albertmrm

Hi Lotje,

Sure, here you have it.

validacion_v2.osexp

Everything is in Spanish, I hope that's not a problem.

Thanks for answering,

Albert

eduard

Hi Albert,

Do the questions depend on the sound that is being played. If not (that is always the same questions are being asked), you can simply hardcode them on the sketchpad without adding them to the loop table. Almost like you do it already. So, do away with the columns natural and cmxd. If the questions are sound-specific, you have to add them to the loop table. for example in two columns called question1 and question2. Then in each row you can type the question for that sound.

if the only actual responses matter and you don't need to do any accuracy or RT analysis on them, you don't need to bother with defining response keys. Just make sure participants know what options there are (either before or during the experiment), and hardcode these keys as correct response in the keyboard_response item.

Does that make sense?

Eduard

albertmrm

Hi Eduard,

Your first guess was right, the questions are always the same, no matter the audio that is being played. I didn't understand the "hard coding" first thing (as I am new to all this), but I did some modifications based on what you said (I must admit I was guessing) and it worked. So (in case it helps anyone), what I did was to eliminate the both columns ("natural" and "cdmx") from the loop table and left the "correct response" field empty (I only left the allowed responses that I needed). In the logger, I just need to check the response to each question to collect the data I need.

Thank you Eduard and Lotje very much for your time and answers.

Regards,

Albert