suspicion-checks-experiment-3/index.js

import { initJsPsych } from 'jspsych';
import 'jspsych/css/jspsych.css';
import jsPsychHtmlKeyboardResponse from '@jspsych/plugin-html-keyboard-response';
import jsPsychFullscreen from '@jspsych/plugin-fullscreen';
import jsPsychHtmlButtonResponse from '@jspsych/plugin-html-button-response';
import jsPsychSurvey from '@jspsych/plugin-survey';
import '@jspsych/plugin-survey/css/survey.css';
import './styles.css';
import { getStimulusMap } from './scripts/text-stimuli.js';
import { textStimuli } from './scripts/text-stimuli.js';
import JsPsychDieRoll from './plugins/jspsych-die-roll.js';
import JsPsychCaptcha from './plugins/jspsych-captcha.js';
import html from './utils/html.js';

const experiment_name = import.meta.env.VITE_EXPERIMENT_NAME;

let prolific_id;
let probe_condition; // will be set to ai or human based on the condition.
let debug;
let probe_order; // will be set to ai_first or human_first based on the condition
const CAPTCHA_TRIAL_COUNT = debug ? 2 : 12; // set to 10 for main experiment

function delayed_redirect(url) {
  setTimeout(() => {
    window.location = url;
  }, 5000);
}

const jsPsych = initJsPsych({
  on_finish: function() {
    jsPsych.getDisplayElement().innerHTML = textStimuli.complete;
  },
  on_close: function() {
    delayed_redirect(import.meta.env.VITE_CLOSED_URL);
  },
  on_data_update: function() {
    if (debug) {
      console.log(jsPsych.data.get().json());
    }
  },
  show_progress_bar: true,
});

debug =
  jsPsych.data.getURLVariable('debug') === 'true' ||
  import.meta.env.VITE_DEBUG === 'true';

console.log('debug:', debug);

prolific_id = jsPsych.data.getURLVariable('PROLIFIC_PID');

const COND = Number(jsPsych.data.getURLVariable('C'));

const probe_preamble = `In this experiment, we told you that you would roll a die to determine the difficulty of the captcha task.\nHowever, `;
const probe_closing_text = `\n\nPlease share your thoughts and suspicions about this by indicating your agreement with the following statements.`;

const probe_text_die =
  probe_preamble +
  'the die roll was rigged, so that the number you received (and therefore the difficulty of the captcha task) was pre-determined. ' +
  probe_closing_text;
const probe_text_difficulty =
  probe_preamble +
  'while the die roll was random, the difficulty of the captcha task was pre-determined and unrelated to the die roll. ' +
  probe_closing_text;

let die_result = 3;

switch (COND) {
  case 0:
    probe_condition = 'die';
    probe_order = 'die_first';
    die_result = 4;
    break;
  case 1:
    probe_condition = 'die';
    probe_order = 'die_first';
    die_result = 4;
    break;
  case 2:
    probe_condition = 'difficulty';
    probe_order = 'die_first';
    die_result = 4;
    break;
  case 3:
    probe_condition = 'difficulty';
    probe_order = 'die_first';
    die_result = 4;
    break;
  case 4:
    probe_condition = 'die';
    probe_order = 'difficulty_first';
    break;
  case 5:
    probe_condition = 'die';
    probe_order = 'difficulty_first';
    break;
  case 6:
    probe_condition = 'difficulty';
    probe_order = 'difficulty_first';
    break;
  case 7:
    probe_condition = 'difficulty';
    probe_order = 'difficulty_first';
    break;
}

const stimulusMap = getStimulusMap();

const props = {
  condition: probe_condition,
  prolific_id: prolific_id,
  experiment_name: experiment_name,
  probe_order: probe_order,
  cond: COND,
};

if (debug) {
  console.log(props);
}

jsPsych.data.addProperties(props);

const timeline = [];

const pre_consent_info = {
  type: jsPsychHtmlKeyboardResponse,
  choices: [' '],
  stimulus: stimulusMap.get('pre_consent_info'),
};

const enter_fullscreen = {
  type: jsPsychFullscreen,
  fullscreen_mode: true,
};

const consent_form = {
  type: jsPsychHtmlButtonResponse,
  stimulus: stimulusMap.get('consent'),
  choices: ['Exit', 'Continue'],
  on_finish: function(data) {
    if (data.response === 0) {
      jsPsych.abortExperiment(stimulusMap.get('no_consent'));
    }
  },
};

const instructions_1 = {
  type: jsPsychHtmlKeyboardResponse,
  choices: [' '],
  stimulus: stimulusMap.get('instructions_1'),
};

const instructions_2 = {
  type: jsPsychHtmlKeyboardResponse,
  choices: [' '],
  stimulus: stimulusMap.get('instructions_2'),
};

const instructions_3 = {
  type: jsPsychHtmlKeyboardResponse,
  choices: [' '],
  stimulus: stimulusMap.get('instructions_3'),
};

const debrief = {
  type: jsPsychHtmlKeyboardResponse,
  choices: [' '],
  stimulus: stimulusMap.get('debrief'),
};

const pre_survey_info = {
  type: jsPsychHtmlKeyboardResponse,
  choices: [' '],
  stimulus: stimulusMap.get('pre_survey_info'),
};

const die_roll_trial = {
  type: JsPsychDieRoll,
  prompt: html`
    <p class="mt-2">
      Click the die once to start it rolling, then click it again to stop.
    </p>
  `,
  rigged_value: die_result,
  roll_duration: 2200,
  result_template: `You rolled a {{value}} (moderate difficulty). Click 'continue' to proceed.`,
};

const create_captcha_trial = trial_index => {
  return {
    type: JsPsychCaptcha,
    prompt:
      '<p class="leading-relaxed text-center">Enter the characters you see into the textbox below.</p>',
    difficulty: die_result,
    button_label: 'Continue',
    error_text: '',
    allow_refresh: false,
    require_correct: false,
    data: {
      trial_id: 'captcha_entry',
      captcha_index: trial_index + 1,
      captcha_total: CAPTCHA_TRIAL_COUNT,
    },
  };
};

const captcha_trials = Array.from({ length: CAPTCHA_TRIAL_COUNT }, (_, index) =>
  create_captcha_trial(index)
);

const die_probe_row = {
  text:
    'I suspected that the die roll was not random, or the number I received was pre-determined.',
  value: 'SuspicionDie',
};

const difficulty_probe_row = {
  text:
    'I suspected that, contrary to what I was told, the captcha task difficulty was not determined by the die roll.',
  value: 'SuspicionDifficulty',
};

const survey_function = survey => {
  survey.onAfterRenderPage.add(function(sender, options) {
    console.log('Survey page rendered:', sender.currentPage);
    if (survey.activePage.name === 'page2') {
      const nextButton = document.querySelector('#sv-nav-next > div > input');
      if (nextButton) {
        let seconds = 20;
        const originalText =
          nextButton.value.replace(/\s*\(\d+\)$/, '') || 'Continue';
        nextButton.disabled = true;
        nextButton.value = `${originalText} (${seconds})`;
        const interval = setInterval(() => {
          seconds--;
          nextButton.value = `${originalText} (${seconds})`;
          if (seconds <= 0) {
            clearInterval(interval);
            nextButton.disabled = false;
            nextButton.value = originalText;
          }
        }, 1000);
      }
    }
  });
};

const survey = {
  type: jsPsychSurvey,
  survey_function: survey_function,
  survey_json: {
    showQuestionNumbers: false,
    completeText: 'Done!',
    pageNextText: 'Continue',
    pagePrevText: 'Previous',
    showPrevButton: false,
    pages: [
      {
        name: 'page1',
        elements: [
          {
            type: 'matrix',
            name:
              'Please answer the following questions about your experience in the captcha task.',
            alternateRows: true,
            isAllRowRequired: debug ? false : true,
            rowOrder: 'random',
            rows: [
              {
                text: `I found the captcha task difficult.`,
                value: 'Difficulty',
              },
              {
                text: `I felt lucky during the die roll.`,
                value: 'Luck',
              },
              {
                text: `I felt unlucky during the die roll.`,
                value: 'Bad_luck',
              },
              {
                text: `I think I solved all the captchas correctly.`,
                value: 'Accuracy',
              },
              {
                text: `I think I solved captchas faster than most other participants would have.`,
                value: 'Relative_performance',
              },
              {
                text: `I think I solved captchas slower than most other participants would have.`,
                value: 'Relative_performance_slow',
              },
            ],
            columns: [
              {
                value: 5,
                text: 'Strongly agree',
              },
              {
                value: 4,
                text: 'Agree',
              },
              {
                value: 3,
                text: 'Neutral',
              },
              {
                value: 2,
                text: 'Disagree',
              },
              {
                value: 1,
                text: 'Strongly disagree',
              },
            ],
          },
        ],
      },
      {
        name: 'page2',
        elements: [
          {
            type: 'matrix',
            name:
              probe_condition === 'die'
                ? probe_text_die
                : probe_text_difficulty,
            alternateRows: true,
            isAllRowRequired: debug ? false : true,
            rowOrder: 'random',
            rows: [
              probe_order === 'die_first'
                ? die_probe_row
                : difficulty_probe_row,
              {
                text: `There's no question here. Select 'Disagree' to show that you're paying attention.`,
                value: 'AttentionCheck',
              },
              probe_order === 'die_first'
                ? difficulty_probe_row
                : die_probe_row,
            ],
            columns: [
              {
                value: 5,
                text: 'Strongly agree',
              },
              {
                value: 4,
                text: 'Agree',
              },
              {
                value: 3,
                text: 'Neutral',
              },
              {
                value: 2,
                text: 'Disagree',
              },
              {
                value: 1,
                text: 'Strongly disagree',
              },
            ],
          },
        ],
      },
      {
        name: 'page3',
        elements: [
          {
            type: 'radiogroup',
            title: 'Please indicate your gender',
            choices: ['Male', 'Female', 'Other'],
            isRequired: debug ? false : true,
            colCount: 0,
            name: 'gender',
          },
          {
            type: 'radiogroup',
            title: 'Please indicate your handedness',
            choices: ['Right', 'Left', 'Ambidextrous/Other'],
            isRequired: debug ? false : true,
            colCount: 0,
            name: 'handedness',
          },
          {
            type: 'text',
            title: 'How old are you?',
            name: 'age',
            isRequired: debug ? false : false,
            inputType: 'number',
            min: 18,
            max: 100,
            defaultValue: 18,
          },
        ],
      },
    ],
  },
};

const main_experiment_timeline = [
  instructions_1,
  instructions_2,
  die_roll_trial,
  instructions_3,
  ...captcha_trials,
  pre_survey_info,
  survey,
  debrief,
];

if (debug) {
  timeline.push(...main_experiment_timeline);
}

if (!debug) {
  timeline.push(pre_consent_info);
  timeline.push(consent_form);
  timeline.push(enter_fullscreen);
  timeline.push(...main_experiment_timeline);
}
jsPsych.run(timeline);