[samsanto]

Cache problem. yikes. I think I’m good now! Thanks for all your help, I really appreciate it.

-S

[samsanto]

Yes, done! Thank you.

[samsanto]

Yeah, my experiment is on the PCIbex Farm. Here’s the demo link:
https://farm.pcibex.net/r/mRRSNl/

I’m not sure if this is helpful, but when I run the study from your demonstration link, it works perfectly fine. When I downloaded a copy of your experiment and upload it to my account, I get all the aforementioned errors and it does not run… not sure if that is relevant?

[samsanto]

So I guess I’m confused why it would work for you, but not me?

I get the timeout error when I try to click https://www.hjpatt-136.umd.edu/Web_Experiments/Slevc/spr/sprAudio.zip (the connection is not secure even though its https?)

The zip downloads successfully when I go to just https://hjpatt-136.umd.edu/Web_Experiments/Slevc/spr/sprAudio.zip (no www)… however when I try to do PreloadZip("https://hjpatt-136.umd.edu/Web_Experiments/Slevc/spr/sprAudio.zip") in my study code (no www) I get the No ‘Access-Control-Allow-Origin’ header is present error… I’m not sure where I’m going wrong here. I tried running the code you posted above that you stated worked for you and its not working on my end (because no www).

[samsanto]

Hi Jeremy,

I was having the same problems as above where I was getting the following error: Access to XMLHttpRequest at ‘https://hjpatt-136.umd.edu/Web_Experiments/Slevc/spr/sprAudio.zip from origin ‘https://farm.pcibex.net’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

I changed https://hjpatt-136.umd.edu/Web_Experiments/Slevc/spr/sprAudio.zip to https://www.hjpatt-136.umd.edu/Web_Experiments/Slevc/spr/sprAudio.zip and that solved the above error, but I still cannot access my zipped resources.

It seems like preloading my zip file goes fine, however, when I “check preloaded” I do not actually see anything in my debugger log to indicate the filed were loaded. Then, when it reaches the point in my experiment when I actually try to access the resources, I see the “Please wait, resources are loading…” message before the experiment crashes altogether with the following three errors:

1. PennController.js:65 Uncaught (in promise) DOMException: The element has no supported sources.
2. PennController.js:65 Uncaught Error: InvalidStateError: Failed to read the ‘responseText’ property from ‘XMLHttpRequest’: The value is only accessible if the object’s ‘responseType’ is ” or ‘text’ (was ‘arraybuffer’).
at XMLHttpRequest.n.onreadystatechange (PennController.js:65)
3. PennController.js:65 http://www.hjpatt-136.umd.edu/Web_Experiments/Slevc/spr/sprAudio.zip:1 Failed to load resource: net::ERR_CONNECTION_TIMED_OUT

Below is the section of code where I load my zip:

PennController.PreloadZip("https://www.hjpatt-136.umd.edu/Web_Experiments/Slevc/spr/sprAudio.zip");
PennController.CheckPreloaded();

Let me know if you have any ideas or need more information… Thanks for your help!

-Sam

[samsanto]

Thanks so much Jeremy! This is exactly what I needed.

[samsanto]

Hi Jeremy,

Jumping in here… I know this post is relatively recent, but I just want to double check that there is no way for the new MediaRecorder to detect when a participant begins speaking after the recorder begins?

I need to do something along the lines of calculating a “points” system if the participant responds within 500ms of the recorder beginning or not (+1/-1 if successful or not)… as of now I don’t think this is something feasible without outside analysis tools (like Praat as you suggested above?)

Let me know if anything has changed!

Thanks,
Sam

[samsanto]

perfect! Thanks Jeremy.

[samsanto]

Oh wow, duh! Forgot I had that… for that exact point.

Thanks so much!!

[samsanto]

Hi Jeremy,

Thanks so much! This works pretty much how I need, I did have to switch around a couple things. Mainly I want all the “Train” to go first in a block then all the “Test” so I took out the rshuffle(…) but that was easy.

Now I’m having a problem where I want to do slightly different key presses depending on if its a “train” or “test.” For the train words, I just display the word, for the test words, I ask want to get user input. Based on how we set it up, each block is (hopefully) guaranteed to have 12 words in it so I am keeping a global counter variable that just switches off every 12 words the action (see below). However, this isn’t working. The counter is not actually incrementing and it is stuck on the “failure” option, any idea why?

Also if you have a better way to implement this, let me know (I feel like its too “hardcoded” if you know what I mean…)
Thank you for the continued help, I really appreciate it!!

PennController.Sequence(
    "Learn-0","Test-0","pause",
    "Learn-1","Test-1","pause",
    "Learn-2","Test-2","pause",
    "Learn-3","Test-3","pause",
    "Learn-4","Test-4","pause",
    "Learn-5","Test-5","pause",
    "Learn-6","Test-6","pause",
    "Learn-7","Test-7","pause",
    "Learn-8","Test-8","pause",
    "Learn-9","Test-9","pause",
    "Learn-10","Test-10","pause",
    "Learn-11","Test-11","pause"
);
PennController.ResetPrefix(null);

newVar("count")
    .set(0)
    .global()
;

PennController("pause", newButton("Take a break").print().wait() );

PennController.Template( "statTableRandom.csv" , row =>
    newTrial( addItem(row.Type) ,
    
        getVar("count").test.is(12)
            .success(
                getVar("count").set(0)
                ,
                newText(row.Word).print()
                ,
                newKey("yn").wait()
            )
            .failure(
                getVar("count").set(v=>v+1)
                ,
                newText(row.Word).print()
                ,
                newKey(" ").wait()
            )
    )
);

-Sam

[samsanto]

Hi Jeremy,

Jumping in here because this is pretty similar to something I am trying to accomplish.

I have an experiment with 12 blocks but the stimuli for each block are randomly generated from a master list (csv) for each participant. Essentially, one block consists of displaying 12 random “train” words and 12 random “test” words from this master list. Right now I have a file with three columns (Item, Type, Word) where item is just an index, type is Train v. Test, and Word is the actual stimulus.

I need to generate 24 random subsets of my master list- so 12 of the “Train” words, and 12 “Test” words- without replacement (the main issue) so I guarantee that each item is only seen once, and cycle through them to display the words.

I appreciate your help and any thoughts you have!

Thanks,
Sam

[samsanto]

Ah! That totally makes sense. Thanks so much Jeremy! This works great.

[samsanto]

Hi Jermey,

I’m jumping in here because I am trying to do something very similar and cannot figure it out. I want add a Qualtrics link in my study, however instead of using “PennController.GetURLParameter(“id”)”, I randomly generate a participant ID as a global variable and want to use that in my link. I’ve tried many, many ways to integrate my variable into the outgoing link and it either does not form a clickable link, or the link is clickable, but instead of the participant ID # actually being integrated, it just says “[object%20Object]” (type cast error??).

Here is my code with two of the ways I have tried to integrate the PID, if you could help me out, I’d appreciate it!

PennController("genID",
    newVar("subjID")
        .global()
        .set(Math.floor((Math.random() * 10000) + 1))
)
.log( "id" , getVar("subjID"));

PennController( "testLink" ,
    
        //I tried just "getVar("subjID") also but thought maybe it needed to be in text ("string") form but neither seem to work for me
        newText("ID", "").text(getVar("subjID"))
        ,
        
        //Attempt #1 (not a clickable link)
        newText('<a href="https://umdsurvey.umd.edu/jfe/form/SV_a9pG7czZy4cfAPP?ID=')
            .after( newText().text(getVar("subjID")))
            .after( newText('">Click here to go the next part of my study</a>'))
            .print()
        ,
        
        //Attempt #2 (link doesn't have the actual PID in the URL, just [object...]
        newText("<p><a href='https://umdsurvey.umd.edu/jfe/form/SV_a9pG7czZy4cfAPP?ID="+getText("ID")+"'>Click here to go the next part of my study</a>.</p>")
        .print()
        ,
        
        newButton("Continue")
            .print()
            .wait()

);

Thanks for any suggestions,
Sam

[samsanto]

Hi Jeremy,

This works great! Thank you so much, I really appreciate you taking the time.

-S

[samsanto]

Jeremy,

Thank you so much!! This works like a gem.

-Sam

[Author]

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