content-locale-humanize-ja

Overview

Calibration anchors and current norms for Japanese (ja-JP), feeding content-locale-humanize's dimensions. A calibration aid, not the checklist; reason natively beyond it.

Rules

AI tells

Sourcing confidence: anecdotal blog discourse, not quantitative research.

• Katakana loanwords where a native term exists: インサイト, アウトプット, スケーラビリティ.
• Hedge endings such as「〜ではないでしょうか」; SEO-blog closers such as「いかがでしたか」.
• Uniformly formal, emotionally flat register; the same phrase repeated within a passage instead of natural rephrasing.

Translationese (翻訳調)

• Pronouns Japanese would drop: 彼, 彼女, それ, あなた.
• 「〜することができる」for every "can", 「〜によって」passives, 「〜を持っている」for "have".
• Long noun-modifying chains copied from English relative clauses; 「〜しましょう」for every "let's".

Current norms

• Style: です・ます for most product, marketing, and help content; だ・である for reference or academic text. Never mix them in body text.
• Keigo: avoid double honorifics (おっしゃられる, ご覧になられる) and reflexive 「させていただく」; machine output tends to over-polish.
• Notation: full-width 、。 (the 2022 公用文作成の考え方 made 、 the default even in horizontal official text); half-width alphanumerics; follow the house rule for long-vowel katakana (コンピューター vs コンピュータ) and for spacing between Japanese and Latin text (the JTF translation style guide uses none). Hold each choice throughout.

References

Reviewed 2026-10-12. AI tells: note.com and Zenn blog discourse; ai-souken.com. Norms: 文化審議会「公用文作成の考え方」(建議, 2022), JTF日本語標準スタイルガイド.