validity

妥当性、正当性

正しいこと、または十分な根拠に支えられていること。

やさしい英語で： The quality of being true or supported by good reasons.

• I doubt the validity of that claim.
• New evidence supports the validity of her explanation.
• How can we assess the validity of these conclusions?

使い方： validity of something (They questioned the validity of his argument.)

類義語： soundness

反対語： invalidity

よく使う表現： question the validity, validity of something

有効性

券や書類などが正式に認められ、まだ使えること。

やさしい英語で： The quality of being officially accepted and still usable, as with a ticket or document.

• The ticket has a validity period of one month.
• Please check your passport’s validity before booking.
• The website lets you confirm the validity of your permit.

使い方： validity of something (Check the validity of your ticket before boarding.)

類義語： validness

反対語： invalidity

よく使う表現： passport validity, check validity, validity period

妥当性

検査が、測るべき能力や特性をどれほど適切に測れているか。

やさしい英語で： How well a test measures the skill or quality it is meant to measure.

• The researchers checked the test’s validity.
• A larger study could improve confidence in the questionnaire’s validity.
• High scores alone do not prove a test’s validity.

使い方： validity of something (The study examined the validity of the reading test.)

よく使う表現： test validity, assess validity, validity of something, measurement validity

法的有効性

法律で認められ、法的な効力を持つこと。

やさしい英語で： The quality of being legally effective and recognized by the law.

• The agreement’s validity depends on both signatures.
• A judge questioned the validity of the will.
• The ruling established the legal validity of their marriage.

使い方： validity of something (The court confirmed the validity of the contract.)

反対語： invalidity

よく使う表現： legal validity, validity of something