ビッグファイブ性格診断 —
無料・全30問
The research standard: five traits, honest percentiles, no flattery.
🔁 いつでも切り替えOK — 回答は引き継がれます·同じ質問、同じ採点、同じく無料の結果
背景にある科学
Items adapted from the public-domain IPIP pool — the most validated personality framework in modern psychology, with decades of cross-cultural replication. Five dimensions, percentile-scored against population norms, with reverse-keyed items balanced to reduce social-desirability bias. 測定方法をくわしく読む →
無料で受けとれるもの
- ✓Percentile scores on all five traits
- ✓Where you sit relative to the population, stated without spin
- ✓What each score means for relationships and work
- ✓A shareable result card
アタッチメント・スタイルのサンプルです — レイアウトはどの診断も同じ。
結果に有料部分はありません。無料プロフィールを作ればレポートは全部開き、ずっと保存されます。それが私たちの約束です。
よくある質問
Why do some scores feel unflattering?
Because they are percentiles, not compliments. A low score is information, not a verdict — and traits shift slowly over a lifetime.
Is it really free?
Yes. Your full scored result — percentiles, archetype, share card — is free, always, and every insight opens with a free profile. Nothing in a result is for sale.
Do I need an account?
No. Take the test and see your result instantly. An account only exists to save results across devices.
Quiz or talking with Luna — which should I pick?
Same questions, same scoring. The quiz is fastest; talking with Luna feels more natural and lets you add nuance. You can switch any time and your answers carry over. Talking is limited to once a day because it costs far more to run; the quiz never is.
What if the result does not sound like me?
Then say so — that is useful information, not a failure. Every self-report instrument measures how you answered today, and mood, context and how honestly you read the items all move it. Take it again in a few weeks, or open the result with Luna and tell her which part is wrong; she works from the same numbers and will not insist you are the archetype.
Who can see my results?
Nobody but you, unless you share them. Nothing is posted anywhere, results are not public, and a share card is only created when you ask for one. Luna sees your results only while the switch for that is on in Settings, and you can turn it off mid-conversation.
How often should I retake it?
Not weekly. These constructs are meant to be fairly stable, so a re-test after a few months — or after something genuinely changed, a new job, the end of a relationship, a course of therapy — tells you something. Re-taking after a bad afternoon mostly measures the afternoon.
あわせて受けたい診断
ひとつ加えるごとに、Lunaの助言はより的確になります。