var thehangover = ["the_hangover.jpeg", "th2.jpeg", "th3.jpeg", "th4.jpeg", "th5.jpeg"];
var i, coords = [[30,30],[51,30],[30,51],[51,51]], // [[top%,left%],[top,left]...]
    blocks = [], r, stimululus, e, hits = 0, false_alarms = 0,
    yes = addblock(44,90,12,7,"lightpink","Yes"),
    trials = shuffle([1,1,1,1,1, 1,1,1,1,1, 1,1,1,1,1, 2,2,2,2,2]);
var endphoto = ["ep.jpeg"];


preload("the_hangover.jpeg");
preload("th2.jpeg");
preload("th3.jpeg");
preload("th4.jpeg");
preload("th5.jpeg");
preload("ep.jpeg");

image.await("preloading_completed");

// welcome intstructions
instruction("Welcome to this 3 minute taking impulse control experiment measured with a Go/NoGo task. Your score will be visible in the end.");

// CONSENT
radio("Participation in this experiment is entirely voluntary and you may withdraw at any time. Would you like to proceed?",
  [["Yes"], ["No"]], "consent");

if (response.consent === "Yes") 
{
  
    // Give each subject an ID number (increase the number by 1 for each new subject)
    var subject_id = increase("Subject ID", "script");
    log(subject_id,"subject_ID");
    
    // Assign subjects to a condition based on whether their ID is divisble by 2.
    if (subject_id%2 === 0) // *even* IDs are assigned to:
    {
    // Condition 1: Pictures + Go-NoGo
   // Instructions for Condition 1
        instruction("Please pay attention to the 5 pictures shown");
    // for loop for the 5 pics
        for (i = 0; i < thehangover.length; i = i + 1)
        {
        setimage(thehangover[i]);
        await(2000);
        clear();
        await(1000);
        }

         // Go/noGo 
    instruction("Click the yes button(below) or tap spacebar when the G of Go is shown but do NOTHING when the N of No is shown. Be as accurate and fast as possible.");

            for (i = 0; i < coords.length; i++) 
            { // block with and height is 19%
            blocks.push(addblock(coords[i][0],coords[i][1],19,19,'lightpink').text('*',300)); // * of size 300%
            }


                for (i = 0; i < trials.length; i++) 
                {
                await(500 + random(500));
                stimulus = trials[i] === 1 ? 'G' : 'N'; // 75:25 chance of P or R
                r = randint(0,3); 
                blocks[r].text(stimulus,200);
    
                waitfor {
                e = awaitkey(' ',1000); // Wait for space but no longer than 1500 ms
                } or {
                e = yes.await('click',1000);
                }
    
                if (e.type !== 'timeout' && stimulus === 'G')
                {
                ++hits;
                }
    
                if (e.type !== 'timeout' && stimulus === 'N')
                {
               ++false_alarms;
                }
    

                await(300);
                blocks[r].text('*',300);
                }

                    for (i = 0; i < blocks.length; i++) // Remove ('destroy') all blocks
                    {
                    blocks[i].destroy();
                    }

                    log(hits,"hits");
                    log(false_alarms,"false_alarms");
                    var dprime = stat.dprime("hits","false_alarms").toFixed(2);
                    log(dprime, "dprime");

text('You had ' + hits + ' (out of 15) correct and ' + false_alarms + ' false alarms ("Yes" on R).

'
   + 'This gives a d-prime measure of ' + stat.dprime(hits,false_alarms).toFixed(2)
   + '

Use the "Exit Button" to leave the experiment and enter a small debriefing');



yes.text("Exit");
yes.await('click');
yes.destroy();
clear();




  } 
  else 
  {
    // Participants in Condition 2
    console.log("Participant is in Condition 2");
    // Condition 2: Go-NoGo
    // code for Condition 2 

instruction("Click the yes button(below) or tap spacebar when the G of Go is shown but do NOTHING when the N of No is shown. Be as accurate and fast as possible.");

for (i = 0; i < coords.length; i++) { // block with and height is 19%
    blocks.push(addblock(coords[i][0],coords[i][1],19,19,'lightpink').text('*',300)); // * of size 300%
}


for (i = 0; i < trials.length; i++) 
{
    await(500 + random(500));
    stimulus = trials[i] === 1 ? 'G' : 'N'; // 75:25 chance G N
    r = randint(0,3); 

    blocks[r].text(stimulus,200);
    
    waitfor {
        e = awaitkey(' ',1000); // Wait for space not longer than 1500 ms
    } or 
    {
    e = yes.await('click',1000);
    }
    
    
    if (e.type !== 'timeout' && stimulus === 'G')
    {
        ++hits;
    }
    
    if (e.type !== 'timeout' && stimulus === 'N')
    {
        ++false_alarms;
    }
    

    await(300);
    blocks[r].text('*',300);
}

for (i = 0; i < blocks.length; i++) // Remove the blocks
{
    blocks[i].destroy();
}

log(hits,"hits");
log(false_alarms,"false_alarms");
var dprime = stat.dprime("hits","false_alarms").toFixed(2);
log(dprime, "dprime");

text('You had ' + hits + ' (out of 15) correct and ' + false_alarms + ' false alarms ("Yes" on R).

'
   + 'This gives a d-prime measure of ' + stat.dprime(hits,false_alarms).toFixed(2)
   + '

Use the "Exit Button" to exit the experiment and enter a small debriefing ');


yes.text("Exit");
yes.await('click');
yes.destroy();
clear();


  }
  
  
  // Demographic questions for Condition 2
    radio("What is your gender?",[["Female"],["Male"],["Other"],["Prefer not to say"]],"gender"); 
    // Radio: Your answer options appear in a drop-down menu
    radio("Are you diagnosed with a disorder that influences attention or impulsivity?",[["Yes"], ["No"],["Prefer not to say"]], "disorder");
    select("What is your age?",range(0,100),"age"); 
    // Select: Your number range (0-99) appears in a drop-down menu
    text("You selected {gender}, {age} years, and {disorder} attention/impulsivity disorder."); 
     // Variables in curly brackets are replaced with subject's answer for that variable
    await(3000);
    scale("On a scale of 1 to 5, how challenging did you find this task?","Very Easy","Very Hard","difficulty"); 
    // Scale: Shows a Likert-scale (1 labeled very easy and 5 labeled very hard)
    // Debriefing
    instruction("The goal of this Go/no-Go experiment is to measure the level of impluse control, which is hypothesized to be lower in condition 1 where the participants were exposed to impulsive behavior before the task.");

// end picture
for (i = 0; i < endphoto.length; i = i + 1)
{
    setimage(endphoto[i]);
    await(2000);
    hideimage();
    await(1000);
}

// end text
text("The experiment has ended.");
await(2000);
text("Thank you for participating!");

  // You can include any code that should be executed for all conditions here.

} else {
  // Handle participants who do not consent
  console.log("Participant did not consent");
  // Provide a message for participants who do not consent
  text("You did not consent to participate. Thank you anyways.");
}

Data inspection is forthcoming!

In the mean time, authors may download their own data and make it available as an Excel file. Check out the 'Stimuli and Files' tab.