Score Word Responses Demo Experiment Run Experiment

Score Word Responses

Jaap Murre

Function to help you score free recall answers as obtained with the largeinput() function. If you run it, you won't see any output. First open the console window (with F12 on Windows or Cmd + Option + J on a Mac). The output will appear there.

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// Scores all 'recalled' words and returns an array of 0 and 1 (recalled).
// Only words with letters a-z and A-Z will be scored (e.g., not i-umlaut).
// Criterion is the percentage that may be wrong according to the Levenshtein
// distance relative to the correct word's length. Default: 20% or one letter
// wrong in five-letter word. For short words (e.g., 5 letters), this is a good
// setting. For much longer words/sentences, a higher criterion may be used.

// Usage:
//    var w = ['one','two','three'],
//        s = "two,  ; one  ,  five";
//    scoreWordsRecalled(w,s); // Call with default criterion
// Returns [1,1,0]
function scoreWordsRecalled(words,recalled,criterion) 
    criterion = criterion || 0.20; // 20% difference is still OK, e.g., hony instead of honey
    var i, j, r = recalled.split(/[^A-Za-z]+/), result = [], score;
    for (i = 0; i < words.length; i++) 
        score = 0;
        for (j = 0; j < r.length; j++)
            if ( distance(words[i],r[j]) <= criterion*words[i].length) {
                score = 1;
    return result;

    var correct_words = ['one','two','three'],
        subject_response = "Two,  ; one  ,  five"; // N.B. This is a string. E.g., from larginput()

    var result = scoreWordsRecalled(correct_words,subject_response); // Call with default criterion
    var i, sum = 0;
    for (i = 0; i < result.length; i++) {
        sum = sum + result[i];

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