TrustTask/staircase2edit.js at javascript · elisavanderplas/TrustTask · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
    export function staircase2edit(dots_diff, lastTrialsCorrect, dir,trialNum)
    {
    var back1 = lastTrialsCorrect[lastTrialsCorrect.length-1]; // Last trial
    var back2 = lastTrialsCorrect[lastTrialsCorrect.length-2]; // Two trials ago
    var reverse = false; // Initialize reversal to false

    if(back1) // If the last trial was correct
    {
        if(back2) // AND two trials ago were correct
        {

            if (trialNum < 7)

            dots_diff -= 0.4;

                // for 0==trial and for the second half of the practice

            else if (trialNum > 6 && trialNum < 12)

            dots_diff -= 0.2;
            // for the first 5 trials of the practice

            else if (trialNum > 11)

            dots_diff -= 0.1;
            // for next 5 trials of the practice


            lastTrialsCorrect[lastTrialsCorrect.length-1] = false;


            dir[0] = dir[1]; // Set the direction two trials ago to the direction one trial ago
            dir[1] = "up"; // Set the direction one trial ago to up
            reverse = check_reversal(dir); // Check if there was a reversal in direction as a result of the step down
        }
        // If the last trial was correct and two trials ago were wrong, do nothing.
    }
    else // If the last trial was wrong
    {

            if (trialNum < 7)

            dots_diff += 0.4;
            // for 0==trial and for the second half of the practice

            else if (trialNum > 6 && trialNum < 12)

            dots_diff += 0.2;
            // for the first 5 trials of the practice

            else if (trialNum > 11)

            dots_diff += 0.1;
            // for next 5 trials of the practice


        dir[0] = dir[1]; // Set the direction two trials ago to the direction one trial ago
        dir[1] = "down"; // Set the direction one trial ago to down
        reverse = check_reversal(dir); // Check if there was a reversal in direction as a result of the step up
    }
    // Set limits on dots_diff s.t. it remains in the range of [0,50] inclusive
    //if (dots_diff >= 4.25)
    //	dots_diff = 4.25;
    if (dots_diff <= 1){
        dots_diff = 1
        };
        if (dots_diff >= 5){
        dots_diff = 5
        };


    var output =
    {
        diff: dots_diff,
        direction: dir,
        reversal: reverse,
        stepcount: lastTrialsCorrect
    };
    return output;
    }

    // Note that we only call check_reversal when there was a step up or step down
    function check_reversal(dir)
    {
    if(dir[0] !== dir[1]) // If the direction two trials ago is NOT the same direction as the last trial, then there was a reversal
        return true;
    else // If the direction two trials ago and the last trial are the same direction, no reversal
        return false;
    }