IAT plugin problems!

[margin-bqk]

Hello!
I noticed that when I set display_feedback in the IAT plugin to false, the subjects will still have to press a key after pressing the wrong key to move on to the next trail.
I was planning to not giving the subjects the feedback and just don't let them know their result in every trail.

var con_train_block = {
type: 'iat-html',
stimulus:jsPsych.timelineVariable('sn'),
stim_key_association:jsPsych.timelineVariable('sn_ans'),
bottom_instructions: '

If you press the wrong key, a red X will appear. Press the other key to continue

',
trial_duration: 3000, //Only if display_feedback is false
display_feedback:false,
left_category_key: 'f',
right_category_key: 'j',
left_category_label: ['数学和男性名字'],
right_category_label: ['语文和女性名字'],
response_ends_trial: true,
}

The doc says that when the display_feedback is set to false, trail_duration is needed and the trail will continue automatically, but it still need key press!

Needing help to help me finishing the final assignment lol.
Huge thanks!

[becky-gilbert]

Hi @margin-bqk, yes I just tried this and I see what you mean. I think the trial should end immediately after an incorrect response, with the following parameters:

var trial = {
  type: 'iat-image',
  force_correct_key_press: false,
  display_feedback: false,
  response_ends_trial: true,
  // other parameters...
}

With these settings, I'm finding that a correct response ends the trial immediately, but an incorrect response doesn't. Instead, I think the participant is required to press another key to end the trial. I've created an Issue for this (#1900) so that we can verify that this is a bug, and if so, fix it.

In the meantime, you can fix this yourself with the following modifications to the IAT plugin:

jsPsych/plugins/jspsych-iat-html.js

Lines 219 to 223 in ae332b3

	} else if(trial.response_ends_trial && trial.display_feedback != true) {
	var keyListener = jsPsych.pluginAPI.getKeyboardResponse({
	callback_function: end_trial,
	valid_responses: [jsPsych.ALL_KEYS]
	});

Replace the keyboard listener in the conditional (lines 220-222) above with:

end_trial();

jsPsych/plugins/jspsych-iat-html.js

Lines 251 to 255 in ae332b3

	} else if(trial.response_ends_trial && trial.display_feedback != true) {
	var keyListener = jsPsych.pluginAPI.getKeyboardResponse({
	callback_function: end_trial,
	valid_responses: [jsPsych.ALL_KEYS]
	});

Replace the keyboard listener in the conditional (lines 252-254) above with:

end_trial();

[margin-bqk]

Huge thanks to you. Now it perfectly works. And I will be able to finish my assignment. Wish jsPsych be more perfect!