mikemoi
31 lines
1.0 KiB
TypeScript
31 lines
1.0 KiB
TypeScript
const subscales = {
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perspectiveTaking: [1, 2, 3, 4, 5, 6, 7],
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empathicConcern: [8, 9, 10, 11, 12, 13, 14],
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personalDistress: [15, 16, 17, 18, 19, 20, 21],
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fantasy: [22, 23, 24, 25, 26, 27, 28],
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} as const;
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const reverseItems = new Set([2, 4, 6, 10, 13, 17, 20, 24, 26, 28]);
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function scoreItem(answers: string[], item: number) {
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const raw = Number(answers[item - 1] || 1);
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return reverseItems.has(item) ? 6 - raw : raw;
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}
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function average(scores: number[]) {
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return scores.reduce((sum, score) => sum + score, 0) / scores.length;
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}
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function subscaleAverage(answers: string[], items: readonly number[]) {
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return average(items.map((item) => scoreItem(answers, item)));
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}
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export function calculateEmpathyResults(answers: string[]) {
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return {
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perspectiveTaking: subscaleAverage(answers, subscales.perspectiveTaking),
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empathicConcern: subscaleAverage(answers, subscales.empathicConcern),
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personalDistress: subscaleAverage(answers, subscales.personalDistress),
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fantasy: subscaleAverage(answers, subscales.fantasy),
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};
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}
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