Adding a rest break

[ClareSutherland]

Hi,

I’m trying to add a rest break. It works fine on my local computer, but my experiment breaks on Pavlovia as I get to the rest break so I thought I’d check what I wrote. I put the code component in the rest break routine, set to run on each frame.

Python code:

if trials_2.thisTrialN == 150:
continueRoutine=True
else:
continueRoutine=False

JS code:

if (trials_2.thisTrialN == 150){
continueRoutine = true;
} else {
continueRoutine = false;
}

Any obvious JS error? Thanks!

[ClareSutherland]

I should say I used this previous thread for reference: "Take a break" works locally but not online

[wakecarter]

Two obvious errors.

1. You have to refer to all loops as trials.
2. continueRoutine = True is redundant since that’s the default.

Best wishes,

Wakefield

PsychoPy Python to Javascript crib sheet

[ClareSutherland]

Thanks for taking a look. I’m sorry, I’m not totally sure I follow. Would the code look something like this:

Python:

if trials.thisTrialN != 150:
continueRoutine=False

JS:

if ((trials.thisTrialN !== 150)) {
continueRoutine = false;
}

That’s still not working, but possibly I misunderstood?

[ClareSutherland]

I should specify, I get a red box error message at the point where the rest break would appear, but it disappears too quickly to see what the error message is or I’d take a screengrab.

[wakecarter]

Check the console for errors

[ClareSutherland]

OK I did a wee bit more digging. First, I recorded the experiment and then rewatched which allowed me to pause and see the error - turns out it was because the images hadn’t uploaded properly to the html folder so I fixed this. Now the experiment works, but the rest break never shows. I added this code to my rest break:

console.log(trials.thisTrialN);

When I look at the console (in firefox, by going to Tools>Web developer>Console), it’s showing up as 0 each time, so somehow, the trials are not being counted which is why the rest break never runs. Any idea how to fix this?

[wakecarter]

Try trials.thisN

I’m not sure if it makes a difference.

Alternatively create your own iteration counter, e.g. loopNum = 0 the loopNum +=1 each loop

[ClareSutherland]

Unfortunately neither of these options didn’t work on Pavlovia although they did on Psychopy local - I tried adding an iteration (+1) at the beginning of each routine, as well as on each frame. I’m so puzzled why the trial number doesn’t seem to increment.

[ClareSutherland]

A few other people are also hitting a similiar issue e.g.

Block break text at the end of the experiment

URL of experiment: Description of the problem: hello. I have two test blocks in my experiment, where participants take a 60 sec break in between. I show a text which announces the break time (i.e., “break announcement text”). I wrote a code to prevent the break announcement text to show up at the end of the second block, because its basically the end of the experiment. The code reads as follows: at the very beginning of the js code, i put: var c; in the “function experimentInit()”, i put: c…

PsychoJS: loop.thisTrialN; loop.thisN, are constant

Sorry – Here’s a new version of my text which I hope is clearer. Don’t Refer to custom loop names when using methods .thisN, .finished, etc. Do All loops are referred to as “trials”. Use the custom loop name when referring to trialList. Use “trials” for other attributes. If you only have one loop that you need to refer to, rename it to “trials”. If you have several then don’t worry about renaming them. For nested loops the inner loop is referenced. It may not be possible to reference th…