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<!--Coded and designed by Tierney Lee, Becky Gilbert, Maris Vainre, and Marc Bennet-->
<!DOCTYPE html>
<html>
<head>
<title>Emotional stop signal task</title>
<script src="jspsych-6.1.0/jspsych.js"></script>
<script src="jspsych-6.1.0/plugins/jspsych-html-keyboard-response.js"></script>
<script src="jspsych-6.1.0/plugins/jspsych-image-keyboard-response.js"></script>
<script src="jspsych-6.1.0/plugins/jspsych-instructions.js"></script>
<script src="jspsych-6.1.0/plugins/jspsych-survey-text.js"></script>
<script src = "block_trials/block1_info.js"></script>
<script src = "block_trials/block2_info.js"></script>
<script src = "block_trials/block3_info.js"></script>
<script src = "block_trials/practice_info.js"></script>
<link href="jspsych-6.1.0/css/jspsych.css" rel="stylesheet" type="text/css"></link>
</head>
<body></body>
<script>
// no-go stimulus image path
var stop_image = 'signals/stop_signal.bmp';
//set up fixation
var fixation_image = 'signals/fixpoint.png';
//set up feedback images
var correct_image = 'signals/correct.bmp'
var wrong_image = 'signals/incorrect.bmp'
//set up SSD
var delay = 250;
//set up trial counts
var trial_absolute_count = 1;
var practice_within_count = 1;
var practice_go_count = 1;
var practice_stop_count = 1;
var block1_within_count = 1;
var block1_go_count = 1;
var block1_stop_count = 1;
var block2_within_count = 1;
var block2_go_count = 1;
var block2_stop_count = 1;
var block3_within_count = 1;
var block3_go_count = 1;
var block3_stop_count = 1;
// set up block trial data
var practice_trial_info = practice_info;
var randomize_block_trials = jsPsych.randomization.shuffle([block1, block2, block3]);
var block1_trial_info = jsPsych.randomization.shuffle(randomize_block_trials[0]);
var block2_trial_info = jsPsych.randomization.shuffle(randomize_block_trials[1]);
var block3_trial_info = jsPsych.randomization.shuffle(randomize_block_trials[2]);
//set up timeline
var timeline = [];
var participant_id = {
type: "survey-text",
questions: [
{prompt: "What is your participant ID?"}
]
};
timeline.push(participant_id);
// see docs for more info on the instructions plugin: https://www.jspsych.org/plugins/jspsych-instructions/
var welcome = {
type: "html-keyboard-response",
stimulus: "<h1>Welcome!</h1>" +
"<p>Thank you for taking your time to participate in this study! </p><h2>Press any key to start</h2>"
};
timeline.push(welcome);
var instructions1 = {
type: 'instructions',
pages: ["<h1>Get settled in for the next 20 minutes</h1>" +
"<p>Make sure you're <b>sitting comfortably</b>.<br><br><h1>🔕</h1>Shield yourself from <b>distractions</b>: <br>📴 <b>mute</b> your phone and <br>📩 e-mail alerts </p>" +
"<h2><br>Ready? Press space to continue</h2>"],
key_forward: 32, // code for space
show_clickable_nav: false
};
timeline.push(instructions1);
var instructions2 = {
type: 'instructions',
pages: [
"<p>You will see a photograph followed by an arrow.<br>The arrows may point to the left or to the right.</p><h1>⬅ ➡</h1>"+
"<h2><br>Press space to continue</h2>",
"<h1>⬅</h1><p>If the arrow is pointing to the left, then you should press the C-key.</p>" +
"<br><h1>➡</h1><p>If the arrow is pointing to the right, then you should press the N-key.</p>"+
"<h2><br>Press space to continue</h2>",
"<h1>⬆</h1>"+
"<p>Sometimes, the left/right arrow will be followed by an <b>arrow pointing upwards</b>.</p>" +
"<p>When this happens <br>🚫<b>YOU MUST NOT RESPOND</b>🚫</p>" +
"<h2><br>Press space to continue</h2>",
"<h1>⏱</h1>"+
"<h2>Try to be <b>as quick as possible</b> in your responses</h2>"+
"<p>To make it faster, <br>put your left index finger on the C-key and <br>your right index finger on the N-key.</b></p>"+
"<h2><br>Press space to continue</h2>",
"<h1>🔁</h1><p>First, let's practice this.<br>We'll give you feedback on how you're doing.</p>" +
"<h2><br>Ready? Press space to start the practice</h2>"
],
key_forward: 32, // code for space
show_clickable_nav: false
};
timeline.push(instructions2);
// set up feedback and conditions for practice trials
var too_slow_message = {
type: 'html-keyboard-response',
stimulus: '<h1 style="color:red;">Please respond faster.</h1>',
choices: jsPsych.NO_KEYS,
trial_duration: 500,
post_trial_gap: 1000,
data: {trial_segment: 'too_slow'}
}
var too_slow_conditional = {
timeline: [too_slow_message],
conditional_function: function() {
var last_trial_data = jsPsych.data.get().last(1).values()[0];
if (last_trial_data.trial_segment == "target") {
return true;
} else {
return false;
}
}
}
var practice_correct_go = {
type: 'image-keyboard-response',
stimulus: correct_image,
choices: jsPsych.NO_KEYS,
trial_duration: 500,
post_trial_gap: 1000,
data: {trial_segment: 'practice_correct_go'}
}
var practice_correct_go_conditional = {
timeline: [practice_correct_go],
conditional_function: function() {
var last_trial_data = jsPsych.data.get().last(1).values()[0];
if (last_trial_data.trial_response == last_trial_data.trial_response_correct) {
return true;
} else {
return false;
}
}
}
var practice_wrong_go = {
type: 'image-keyboard-response',
stimulus: wrong_image,
choices: jsPsych.NO_KEYS,
trial_duration: 500,
post_trial_gap: 1000,
data: {trial_segment: 'practice_wrong_go'}
}
var practice_wrong_go_conditional = {
timeline: [practice_wrong_go],
conditional_function: function() {
var last_trial_data = jsPsych.data.get().last(1).values()[0];
if (last_trial_data.key_press !== null && last_trial_data.trial_response !== last_trial_data.trial_response_correct) {
return true;
} else {
return false;
}
}
}
var practice_correct_stop = {
type: 'image-keyboard-response',
stimulus: correct_image,
choices: jsPsych.NO_KEYS,
trial_duration: 500,
post_trial_gap: 1000,
data: {trial_segment: 'practice_correct_stop'}
}
var practice_correct_stop_conditional = {
timeline: [practice_correct_stop],
conditional_function: function() {
var last_trial_data = jsPsych.data.get().last(1).values()[0];
if (last_trial_data.correct == true) {
return true;
} else {
return false;
}
}
}
var practice_wrong_stop = {
type: 'image-keyboard-response',
stimulus: wrong_image,
choices: jsPsych.NO_KEYS,
trial_duration: 500,
post_trial_gap: 1000,
data: {trial_segment: 'practice_wrong_stop'}
}
var practice_wrong_stop_conditional = {
timeline: [practice_wrong_stop],
conditional_function: function() {
var last_trial_data = jsPsych.data.get().last(1).values()[0];
if (last_trial_data.trial_segment !== "stop_signal") {
return false;
} else {
return true;
}
}
}
//set up practice block
for (var i=0; i<practice_trial_info.length; i++) {
// add fixation to this trial
// set up the fixation, since this will be the same for all trials
var fixation = {
type: 'image-keyboard-response',
stimulus: fixation_image,
choices: jsPsych.NO_KEYS,
trial_duration: 500,
data: {trial_segment: 'fixation', condition: practice_trial_info[i].condition}
}
timeline.push(fixation);
// set up emotion image and add to this trial
var emotion = {
type: 'image-keyboard-response',
stimulus: practice_trial_info[i].emotion_image,
choices: jsPsych.NO_KEYS,
trial_duration: 1000,
data: {trial_segment: 'emotion', condition: practice_trial_info[i].condition}
}
timeline.push(emotion);
// set up stop signal trials
if (practice_trial_info[i].condition == "stop") {
// set up target arrow and add to this trial
var target_arrow = {
type: 'image-keyboard-response',
stimulus: practice_trial_info[i].arrow_image,
choices: ['c','n'],
response_ends_trial: false,
trial_duration: function() {
return delay;
},
data: {
trial_segment: 'target',
condition: practice_trial_info[i].condition
}
}
timeline.push(target_arrow);
// set up stop signal and add to this trial
var stop_signal = {
type: 'image-keyboard-response',
stimulus: stop_image,
choices: ['c','n'],
response_ends_trial: false,
trial_duration: 1000,
post_trial_gap: 1000,
data: {
block: 'practice',
trial_absolute: function() {
return trial_absolute_count;
},
trial_within: function() {
return practice_within_count;
},
trial_stop_number: function() {
return practice_stop_count;
},
emotion_type: practice_trial_info[i].emotion_type,
trial_segment: 'stop_signal',
condition: practice_trial_info[i].condition,
arrow_direction: practice_trial_info[i].arrow_direction,
arrow_key_correct: practice_trial_info[i].arrow_key_correct,
trial_response_correct: practice_trial_info[i].trial_response_correct,
SSD: function() {
return delay;
}
},
on_finish: function(data) {
// score response
trial_absolute_count += 1;
practice_stop_count += 1;
practice_within_count += 1;
var correct = true;
var inhibit = 1;
var last_trial_data = jsPsych.data.get().last(2).values()[0];
var trial_response = 'x';
var current_delay = 0;
// if unsuccesful inhibition, decrease SSD so that it is easier to stop
if (data.key_press !== null || last_trial_data.key_press !== null) {
correct = false;
inhibit = 0;
delay -= 25;
if (last_trial_data.key_press !== null) {
data.rt = last_trial_data.rt;
}
else if (data.key_press !== null) {
data.rt = data.rt + current_delay;
}
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "c" || jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(last_trial_data.key_press) == "c") {
trial_response = 'l';
}
else if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "n" || jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(last_trial_data.key_press) == "n") {
trial_response = 'r';
}
}
// if successful inhibition, increase SSD so that it is harder to stop
else {
delay += 25;
}
// add accuracy to the data for this trial
data.trial_response = trial_response;
data.successful_inhibit = inhibit;
data.correct = correct;
}
}
// add the no-go arrow trial (no-go trials only)
timeline.push(stop_signal);
// add the practice feedback (practice block only)
timeline.push(practice_correct_stop_conditional);
timeline.push(practice_wrong_stop_conditional);
} else {
// set up the go trial and add to timeline
var target_arrow = {
type: 'image-keyboard-response',
stimulus: practice_trial_info[i].arrow_image,
choices: ['c','n'],
response_ends_trial: true,
trial_duration: 1000,
post_trial_gap: 500,
data: {
block: 'practice',
trial_absolute: function() {
return trial_absolute_count;
},
trial_within: function() {
return practice_within_count;
},
trial_go_number: function() {
return practice_go_count;
},
emotion_type: practice_trial_info[i].emotion_type,
trial_segment: 'target',
condition: practice_trial_info[i].condition,
arrow_direction: practice_trial_info[i].arrow_direction,
arrow_key_correct: practice_trial_info[i].arrow_key_correct,
trial_response_correct: practice_trial_info[i].trial_response_correct
},
on_finish: function(data) {
// score response
trial_absolute_count += 1;
practice_go_count += 1;
practice_within_count += 1;
var correct = false;
var trial_response = 'x';
// if we add the correct key response to the trial data, then we can use it to score the response
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == data.arrow_key_correct) {
correct = true;
}
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "c") {
trial_response = 'l';
}
else if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "n") {
trial_response = 'r';
}
// add accuracy to data for this trial
data.correct = correct;
data.trial_response = trial_response;
}
};
timeline.push(target_arrow);
// add the too slow conditional node (go trials only)
timeline.push(practice_correct_go_conditional);
timeline.push(practice_wrong_go_conditional);
timeline.push(too_slow_conditional);
}
}
// set up instructions post practice
var post_practice_instructions = {
type: 'instructions',
pages: ["<h1>💡<br>Nice!</h1><p>By now, you probably have an idea how this works. <br>If you have any questions, contact the researcher. <br>If you feel ready, please continue.</p>" +
"<p>From now on there will be no feedback on your performance.</p>" +
"<h2>Press space to continue</h2>",
"<h1>🔔<br>A quick reminder</h1>" +
"<p>Press the C-key when you see the left arrow. <br>Press the N-key when you see the right arrow.<br>Stop if the up arrow appers. </p>" +
"<h2>Ready? Press space to start</h2>",
],
key_forward: 32, // code for space
show_clickable_nav: false
};
timeline.push(post_practice_instructions);
//set up block1
for (var i=0; i<block1_trial_info.length; i++) {
// add fixation to this trial
// set up the fixation, since this will be the same for all trials
var fixation = {
type: 'image-keyboard-response',
stimulus: fixation_image,
choices: jsPsych.NO_KEYS,
trial_duration: 500,
data: {trial_segment: 'fixation', condition: block1_trial_info[i].condition}
}
timeline.push(fixation);
// set up emotion image and add to this trial
var emotion = {
type: 'image-keyboard-response',
stimulus: block1_trial_info[i].emotion_image,
choices: jsPsych.NO_KEYS,
trial_duration: 1000,
data: {trial_segment: 'emotion', condition: block1_trial_info[i].condition}
}
timeline.push(emotion);
// set up stop signal trials
if (block1_trial_info[i].condition == "stop") {
// set up target arrow and add to this trial
var target_arrow = {
type: 'image-keyboard-response',
stimulus: block1_trial_info[i].arrow_image,
choices: ['c','n'],
response_ends_trial: false,
trial_duration: function() {
return delay;
},
data: {
trial_segment: 'target',
condition: block1_trial_info[i].condition
}
}
timeline.push(target_arrow);
// set up stop signal and add to this trial
var stop_signal = {
type: 'image-keyboard-response',
stimulus: stop_image,
choices: ['c','n'],
response_ends_trial: false,
trial_duration: 1000,
post_trial_gap: 1000,
data: {
block: 'block1',
trial_absolute: function() {
return trial_absolute_count;
},
trial_within: function() {
return block1_within_count;
},
trial_stop_number: function() {
return block1_stop_count;
},
emotion_type: block1_trial_info[i].emotion_type,
trial_segment: 'stop_signal',
condition: block1_trial_info[i].condition,
arrow_direction: block1_trial_info[i].arrow_direction,
arrow_key_correct: block1_trial_info[i].arrow_key_correct,
trial_response_correct: block1_trial_info[i].trial_response_correct,
SSD: function() {
return delay;
}
},
on_finish: function(data) {
// score response
trial_absolute_count += 1;
block1_stop_count += 1;
block1_within_count += 1;
var correct = true;
var inhibit = 1;
var last_trial_data = jsPsych.data.get().last(2).values()[0];
var trial_response = 'x';
var current_delay = 0;
// if unsuccesful inhibition, decrease SSD so that it is easier to stop
if (data.key_press !== null || last_trial_data.key_press !== null) {
correct = false;
inhibit = 0;
delay -= 25;
if (last_trial_data.key_press !== null) {
data.rt = last_trial_data.rt;
}
else if (data.key_press !== null) {
data.rt = data.rt + current_delay;
}
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "c" || jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(last_trial_data.key_press) == "c") {
trial_response = 'l';
}
else if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "n" || jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(last_trial_data.key_press) == "n") {
trial_response = 'r';
}
}
// if successful inhibition, increase SSD so that it is harder to stop
else {
delay += 25;
}
// add accuracy to the data for this trial
data.trial_response = trial_response;
data.successful_inhibit = inhibit;
data.correct = correct;
}
}
// add the no-go arrow trial (no-go trials only)
timeline.push(stop_signal);
} else {
// set up the go trial and add to timeline
var target_arrow = {
type: 'image-keyboard-response',
stimulus: block1_trial_info[i].arrow_image,
choices: ['c','n'],
response_ends_trial: true,
trial_duration: 1000,
post_trial_gap: 500,
data: {
block: 'block1',
trial_absolute: function() {
return trial_absolute_count;
},
trial_within: function() {
return block1_within_count;
},
trial_go_number: function() {
return block1_go_count;
},
emotion_type: block1_trial_info[i].emotion_type,
trial_segment: 'target',
condition: block1_trial_info[i].condition,
arrow_direction: block1_trial_info[i].arrow_direction,
arrow_key_correct: block1_trial_info[i].arrow_key_correct,
trial_response_correct: block1_trial_info[i].trial_response_correct
},
on_finish: function(data) {
// score response
trial_absolute_count += 1;
block1_go_count += 1;
block1_within_count += 1;
var correct = false;
var trial_response = 'x';
// if we add the correct key response to the trial data, then we can use it to score the response
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == data.arrow_key_correct) {
correct = true;
}
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "c") {
trial_response = 'l';
}
else if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "n") {
trial_response = 'r';
}
// add accuracy to data for this trial
data.correct = correct;
data.trial_response = trial_response;
}
};
timeline.push(target_arrow);
}
}
//set up instructions post block 1
var post_block1_instructions = {
type: 'instructions',
pages: ["<h2>Need a break?</h2><p>Have a good strech if feel like you need it.</p>" +
"<h2>Press space when you are ready to continue. </h2>"
],
key_forward: 32, // code for space
show_clickable_nav: false
};
timeline.push(post_block1_instructions);
//set up block 2
for (var i=0; i<block2_trial_info.length; i++) {
// add fixation to this trial
// set up the fixation, since this will be the same for all trials
var fixation = {
type: 'image-keyboard-response',
stimulus: fixation_image,
choices: jsPsych.NO_KEYS,
trial_duration: 500,
data: {trial_segment: 'fixation', condition: block2_trial_info[i].condition}
}
timeline.push(fixation);
// set up emotion image and add to this trial
var emotion = {
type: 'image-keyboard-response',
stimulus: block2_trial_info[i].emotion_image,
choices: jsPsych.NO_KEYS,
trial_duration: 1000,
data: {trial_segment: 'emotion', condition: block2_trial_info[i].condition}
}
timeline.push(emotion);
// set up stop signal trials
if (block2_trial_info[i].condition == "stop") {
// set up target arrow and add to this trial
var target_arrow = {
type: 'image-keyboard-response',
stimulus: block2_trial_info[i].arrow_image,
choices: ['c','n'],
response_ends_trial: false,
trial_duration: function() {
return delay;
},
data: {
trial_segment: 'target',
condition: block2_trial_info[i].condition
}
}
timeline.push(target_arrow);
// set up stop signal and add to this trial
var stop_signal = {
type: 'image-keyboard-response',
stimulus: stop_image,
choices: ['c','n'],
response_ends_trial: false,
trial_duration: 1000,
post_trial_gap: 1000,
data: {
block: 'block2',
trial_absolute: function() {
return trial_absolute_count;
},
trial_within: function() {
return block2_within_count;
},
trial_stop_number: function() {
return block2_stop_count;
},
emotion_type: block2_trial_info[i].emotion_type,
trial_segment: 'stop_signal',
condition: block2_trial_info[i].condition,
arrow_direction: block2_trial_info[i].arrow_direction,
arrow_key_correct: block2_trial_info[i].arrow_key_correct,
trial_response_correct: block2_trial_info[i].trial_response_correct,
SSD: function() {
return delay;
}
},
on_finish: function(data) {
// score response
trial_absolute_count += 1;
block2_stop_count += 1;
block2_within_count += 1;
var correct = true;
var inhibit = 1;
var last_trial_data = jsPsych.data.get().last(2).values()[0];
var trial_response = 'x';
var current_delay = 0;
// if unsuccesful inhibition, decrease SSD so that it is easier to stop
if (data.key_press !== null || last_trial_data.key_press !== null) {
correct = false;
inhibit = 0;
delay -= 25;
if (last_trial_data.key_press !== null) {
data.rt = last_trial_data.rt;
}
else if (data.key_press !== null) {
data.rt = data.rt + current_delay;
}
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "c" || jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(last_trial_data.key_press) == "c") {
trial_response = 'l';
}
else if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "n" || jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(last_trial_data.key_press) == "n") {
trial_response = 'r';
}
}
// if successful inhibition, increase SSD so that it is harder to stop
else {
delay += 25;
}
// add accuracy to the data for this trial
data.trial_response = trial_response;
data.successful_inhibit = inhibit;
data.correct = correct;
}
}
// add the no-go arrow trial (no-go trials only)
timeline.push(stop_signal);
} else {
// set up the go trial and add to timeline
var target_arrow = {
type: 'image-keyboard-response',
stimulus: block2_trial_info[i].arrow_image,
choices: ['c','n'],
response_ends_trial: true,
trial_duration: 1000,
post_trial_gap: 500,
data: {
block: 'block2',
trial_absolute: function() {
return trial_absolute_count;
},
trial_within: function() {
return block2_within_count;
},
trial_go_number: function() {
return block2_go_count;
},
emotion_type: block2_trial_info[i].emotion_type,
trial_segment: 'target',
condition: block2_trial_info[i].condition,
arrow_direction: block2_trial_info[i].arrow_direction,
arrow_key_correct: block2_trial_info[i].arrow_key_correct,
trial_response_correct: block2_trial_info[i].trial_response_correct
},
on_finish: function(data) {
// score response
trial_absolute_count += 1;
block2_go_count += 1;
block2_within_count += 1;
var correct = false;
var trial_response = 'x';
// if we add the correct key response to the trial data, then we can use it to score the response
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == data.arrow_key_correct) {
correct = true;
}
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "c") {
trial_response = 'l';
}
else if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "n") {
trial_response = 'r';
}
// add accuracy to data for this trial
data.correct = correct;
data.trial_response = trial_response;
}
};
timeline.push(target_arrow);
// add the too slow conditional node (go trials only)
}
}
//set up instructions post block 2
var post_block2_instructions = {
type: 'instructions',
pages: ["<h2>Need a break?</h2><p>Have a good strech if feel like you need it.</p>" +
"<h2>Press space when you are ready to continue. </h2>"
],
key_forward: 32, // code for space
show_clickable_nav: false
};
timeline.push(post_block2_instructions);
//set up block 3
for (var i=0; i<block3_trial_info.length; i++) {
// add fixation to this trial
// set up the fixation, since this will be the same for all trials
var fixation = {
type: 'image-keyboard-response',
stimulus: fixation_image,
choices: jsPsych.NO_KEYS,
trial_duration: 500,
data: {trial_segment: 'fixation', condition: block3_trial_info[i].condition}
}
timeline.push(fixation);
// set up emotion image and add to this trial
var emotion = {
type: 'image-keyboard-response',
stimulus: block3_trial_info[i].emotion_image,
choices: jsPsych.NO_KEYS,
trial_duration: 1000,
data: {trial_segment: 'emotion', condition: block3_trial_info[i].condition}
}
timeline.push(emotion);
// set up stop signal trials
if (block3_trial_info[i].condition == "stop") {
// set up target arrow and add to this trial
var target_arrow = {
type: 'image-keyboard-response',
stimulus: block3_trial_info[i].arrow_image,
choices: ['c','n'],
response_ends_trial: false,
trial_duration: function() {
return delay;
},
data: {
trial_segment: 'target',
condition: block3_trial_info[i].condition
}
}
timeline.push(target_arrow);
// set up stop signal and add to this trial
var stop_signal = {
type: 'image-keyboard-response',
stimulus: stop_image,
choices: ['c','n'],
response_ends_trial: false,
trial_duration: 1000,
post_trial_gap: 1000,
data: {
block: 'block3',
trial_absolute: function() {
return trial_absolute_count;
},
trial_within: function() {
return block3_within_count;
},
trial_stop_number: function() {
return block3_stop_count;
},
emotion_type: block3_trial_info[i].emotion_type,
trial_segment: 'stop_signal',
condition: block3_trial_info[i].condition,
arrow_direction: block3_trial_info[i].arrow_direction,
arrow_key_correct: block3_trial_info[i].arrow_key_correct,
trial_response_correct: block3_trial_info[i].trial_response_correct,
SSD: function() {
return delay;
}
},
on_finish: function(data) {
// score response
trial_absolute_count += 1;
block3_stop_count += 1;
block3_within_count += 1;
var correct = true;
var inhibit = 1;
var last_trial_data = jsPsych.data.get().last(2).values()[0];
var trial_response = 'x';
var current_delay = 0;
// if unsuccesful inhibition, decrease SSD so that it is easier to stop
if (data.key_press !== null || last_trial_data.key_press !== null) {
correct = false;
inhibit = 0;
delay -= 25;
if (last_trial_data.key_press !== null) {
data.rt = last_trial_data.rt;
}
else if (data.key_press !== null) {
data.rt = data.rt + current_delay;
}
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "c" || jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(last_trial_data.key_press) == "c") {
trial_response = 'l';
}
else if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "n" || jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(last_trial_data.key_press) == "n") {
trial_response = 'r';
}
}
// if successful inhibition, increase SSD so that it is harder to stop
else {
delay += 25;
}
// add accuracy to the data for this trial
data.trial_response = trial_response;
data.successful_inhibit = inhibit;
data.correct = correct;
}
}
// add the no-go arrow trial (no-go trials only)
timeline.push(stop_signal);
} else {
// set up the go trial and add to timeline
var target_arrow = {
type: 'image-keyboard-response',
stimulus: block3_trial_info[i].arrow_image,
choices: ['c','n'],
response_ends_trial: true,
trial_duration: 1000,
post_trial_gap: 500,
data: {
block: 'block3',
trial_absolute: function() {
return trial_absolute_count;
},
trial_within: function() {
return block3_within_count;
},
trial_go_number: function() {
return block3_go_count;
},
emotion_type: block3_trial_info[i].emotion_type,
trial_segment: 'target',
condition: block3_trial_info[i].condition,
arrow_direction: block3_trial_info[i].arrow_direction,
arrow_key_correct: block3_trial_info[i].arrow_key_correct,
trial_response_correct: block3_trial_info[i].trial_response_correct
},
on_finish: function(data) {
// score response
trial_absolute_count += 1;
block3_go_count += 1;
block3_within_count += 1;
var correct = false;
var trial_response = 'x';
// if we add the correct key response to the trial data, then we can use it to score the response
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == data.arrow_key_correct) {
correct = true;
}
if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "c") {
trial_response = 'l';
}
else if (jsPsych.pluginAPI.convertKeyCodeToKeyCharacter(data.key_press) == "n") {
trial_response = 'r';
}
// add accuracy to data for this trial
data.correct = correct;
data.trial_response = trial_response;
}
};
timeline.push(target_arrow);
}
}
// add end message
var end = {
type: 'html-keyboard-response',
stimulus: '<h1>🎊<br>Great!</h1>You're done with this task.<br>Thank you for your time.</p>',
trial_duration: 5000
};
timeline.push(end);
jsPsych.init({
timeline: timeline,
on_finish: function(data) {
// see docs for info on data formatting and saving:
// https://www.jspsych.org/core_library/jspsych-data/#csv
// https://www.jspsych.org/core_library/jspsych-data/#json
// https://www.jspsych.org/core_library/jspsych-data/#localsave
jsPsych.data.get().localSave("csv","go_stop_data.csv");
}
});
</script>
</html>