Take this free handedness quiz — an “are you left handed test” based on the Edinburgh Handedness Inventory. Choose which hand you use for each everyday task, and we’ll calculate your Laterality Quotient (LQ), a score from -100 (fully left-handed) to +100 (fully right-handed).
| Task | Left | Either | Right |
|---|
Tip: answer honestly for the hand you prefer, not the one you’ve been forced to use. An LQ near 0 means you’re mixed-handed or ambidextrous.
How this handedness quiz works
This quiz adapts the Edinburgh Handedness Inventory, the standard tool researchers use to measure hand dominance. For each of the 10 tasks you score Left (-1), Either (0), or Right (+1). Your scores are summed and converted to a Laterality Quotient using the formula (sum ÷ 10) × 100. A score of -100 means you are completely left-handed for every task, +100 means completely right-handed, and values near zero indicate mixed-handedness or ambidexterity.
What your Laterality Quotient means
Most people cluster near the extremes: roughly 90% of the population scores strongly right-handed (LQ ≥ +40), while true left-handers (LQ ≤ -40) make up about 10%. A surprising number of people land in the middle — they write with one hand but throw, deal cards, or use a mouse with the other. If your result is “Ambidextrous / mixed,” you’re cross-dominant, which is more common than most people assume and perfectly normal.
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