Reusing keys

[angelica]

Hi Jeremy,

I’d like to do a speeded grammaticality judgment experiment where the participant has two seconds to provide a judgement before it times out.

I’m running into some logging issues because I use the F/J keys in both the judgment section and the comprehension question section.

customTrial = label => variable => newTrial( label ,
    defaultText
        .center()
    ,
    ...
    ,
    // 3a. Judgment
    	// Participant presses F/J to make a judgment and continue. 
    newText("placeholder", "+++++++")
        .cssContainer({"width": "600px", "height": "50px","font-size": "150%"})
    ,
    newText("not_okay", "F)  NOT OKAY")
        .italic()
        .cssContainer({"width": "300px"})
    ,
    newText("okay", "J)  OKAY")
        .italic()
        .cssContainer({"width": "300px"})
    ,
    newCanvas("j_display", 600, 400)
        .add(0, 145, getText("placeholder"))
        .add(0, 350, getText("not_okay"))
        .add(300, 350, getText("okay"))
        .print()
        .log()
    ,
    newKey("judgment", "FJ")				
    	.callback(getTimer("window").stop())
    	.log("all")							
    ,
    // 3b. Time out
	newTimer("window", 2000)
    	.log()
        .start()
        .wait("first")
    ,
    newText("tooSlow", "Please answer more quickly! Remember, speed is important.")
		.cssContainer({"margin":"145px 0 0 0", "width":"600px"})
    ,
    newText("next", "Press the spacebar to continue.")
    	.italic()
    	.cssContainer({"margin":"105px 0 0 0", "width":"600px"})
    ,
    clear()
    ,
    getKey("judgment")
    	.test.pressed()
    	.success(newText(" ").print())
    	.failure(
    		getText("tooSlow").print(),
    		getText("next").print(),
    		getKey("continue").wait())
	,
	clear()
	,
	// 4. Comprehension question 
		// Participant presses F/J to answer question and continue.
    (variable.question?[
  	...
    ,
    newKey("answer", "FJ")				
        .log("all")
        .wait()
    ]:null)
    ,
    clear()
	,
    // 5. Feedback
    (variable.feedback?[
  	...
    ]:null)
)

For trials without a comprehension question, if a judgment is never provided then it’s nicely logged as Never:
...,Key,judgment,Key,NA,Never,,practice,1,J,,NULL

For trials with a comprehension question, if a judgment is never provided then when the question is answered the keypress is logged as validating both the “judgment” and “answer” Keys.

...,Key,judgment,PressedKey,J,1593044024281,,practice,2,J,F,NULL
...,Key,answer,PressedKey,J,1593044024281,,practice,2,J,F,Wait success

If a judgment is made and a trial has a comprehension question, then the “judgment” keypress is logged twice, first as its actual value and then as an echo of the “answer” keypress.

...,Key,judgment,PressedKey,F,1593044176147,,practice,2,J,F,NULL
...,Key,judgment,PressedKey,J,1593044177099,,practice,2,J,F,NULL
...,Key,answer,PressedKey,J,1593044177099,,practice,2,J,F,Wait success

Is there a way to avoid this?

As a second question, is it possible to completely end a trial early? At the moment, if the judgment section times out the trial moves on the comprehension question/feedback sections, if there are any, but I’d like to be able to have the trial end and move onto the next trial.

Best,
Angelica

[Jeremy]

Hi Angelica,

Use disable on your Key element after you’re done with it, it should stop recording keypresses.

To end a trial early, use the special command end

Jeremy

[angelica]

Hi Jeremy,

Thank you!

[Author]

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