Randomly selecting trial data to generate final "bonus"

[samanthareisman]

I am trying to create a function that randomly selects specific trial data and sums it to calculate a monetary bonus for participants.

The trials I am trying to select look like this:

var trial_circumplex = {
    type: jsPsychdARMPlugin,
    stimulus: 'images/darm.jpg',
    html_input: function(data) {
        var amt_trusted = jsPsych.data.get().last(1).values()[0].response3;
        var trust_amt_doubled = amt_trusted*2
      

        if(jsPsych.timelineVariable('reward') == 1) {
            var trustmin = trust_amt_doubled*trust_min
            var trustmax = trust_amt_doubled*trust_max-1
            var amt_returned = inclusiverandom_withdecimal(trustmin, trustmax, 2)
        } else {
            var trustmin = trust_amt_doubled*notrust_min
            var trustmax = trust_amt_doubled*notrust_max-1
            var amt_returned = inclusiverandom_withdecimal(trustmin, trustmax, 2)
        }

        jsPsych.data.addProperties({
            amt_trusted: parseFloat(amt_trusted),
            amt_returned: parseFloat(amt_returned)
        });

        return create_html(
            jsPsych.timelineVariable('partner_name'),
            jsPsych.timelineVariable('mood_image'),
            amt_returned,
            jsPsych.timelineVariable('trial_num')
            )
        },
    prompt: '<p class="prompt-text"> How did you feel about this interaction?</p>',
    data: {
        trial_num: jsPsych.timelineVariable('trial_num'),
        reward: jsPsych.timelineVariable('reward'),
        mood: jsPsych.timelineVariable('mood'),
        partner_name: jsPsych.timelineVariable('partner_name'),
        trial_phase: 'outcome_circumplex',
        condition: jsPsych.timelineVariable('trial_type'),
    }
}

This is what the "bonus" trial will look like:

var bonus_trial = {
    type: jsPsychHtmlKeyboardResponse,
    stimulus: function() {
        bonus = get_bonus()
        var feedback_string = "<p> You won";
        feedback_string += bonus;
        feedback_string += '</p>'
        return feedback_string
    },
    data: {
        bonus: bonus
    }
}

This is what my get_bonus function currently looks like. While I am currently using 2 sample #s to try and get this to work (var sample_bonus_trials). I eventually want to be able to randomly generate 5 integers between 0 and the length of my conditions, index my subset trials using those 5 integers, and sum the data in amt_return from those 5 trials to generate a bonus. I am struggling with this (especially how to index using the jsPsych.data.get and would love some help!

function get_bonus() {
    var random_sequence = getRandomInt(conditions_shuffled.length)
    var subset = jsPsych.data.get().filter({trial_phase: 'outcome_circumplex', sequence: random_sequence});
    var sample_bonus_trials = [1, 2];
    var bonus_sum = subset.select('amt_returned').sum();

    console.log(random_sequence)
    console.log(subset)
    console.log(bonus_sum)
    return bonus_sum
}

[samanthareisman]

solved: here is the final code:

function get_bonus() {
    var random_sequence = getRandomInt(conditions_shuffled.length)
    var bonus_sequence = jsPsych.data.get().filter({trial_phase: 'outcome_circumplex', sequence: random_sequence}).select('amt_returned').values
    var bonus_sequence_shuffled = shuf(bonus_sequence)
    var bonus_trials = bonus_sequence_shuffled.slice(0,num_bonus_trials)
    var bonus = bonus_trials.reduce((partialSum, a) => partialSum + a, 0)


    console.log(random_sequence)
    console.log(bonus_sequence)
    console.log(bonus_sequence_shuffled)
    console.log(bonus_trials)
    console.log(bonus)

    return bonus.toFixed(2)
}

var bonus_trial = {
    type: jsPsychHtmlKeyboardResponse,
    stimulus: function() {
        var bonus = get_bonus()
        jsPsych.data.write(bonus)

        var feedback_string = "<p style='font-weight:bold'> You won ";
        feedback_string += "<span style='color:green;font-weight:bold'>" + "$" + bonus + "</span>";
        feedback_string += " in bonus money! </p>"
        feedback_string += "<br>"
        feedback_string += "<br>"
        feedback_string += "<br>"
        feedback_string += "<br>"
        feedback_string += "<p> Press any key to continue </p>"

        return feedback_string
    }
}