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8.3 Common Traps and Distractor Patterns

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BJT Business Japanese Proficiency Test BJTビジネス日本語能力テスト

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1 Introduction & Exam Overview

1.1 About the BJT Business Japanese Proficiency Test 1.2 Test Structure, Scoring, and Levels (J5–J1+) 1.3 How to Use This Study Guide

2 Keigo Foundation: The Honorific System

2.1 The Three Keigo Categories: Sonkeigo, Kenjougo, Teineigo 2.2 Sonkeigo (Respectful Language) — Forms and Use 2.3 Kenjougo (Humble Language) — Forms and Use 2.4 Teineigo (Polite Language) and Business Set Phrases

3 Business Vocabulary and Grammar

3.1 Core Business Vocabulary: 役職, 部署, 会社生活 3.2 Honorific Prefixes お/ご, Counters, and Suffixes 3.3 Key Grammar Patterns for Business (～てまで, ～による, ～かねる, ～次第, ～際) 3.4 Fixed Business Expressions and Email Formulae (頭語, 結語, クッション言葉)

4 Part 1: Listening Comprehension (聴解)

4.1 場面把握問題: Photo Scene Comprehension 4.2 発言聴解問題: Keigo Greetings and Replies 4.3 総合聴解問題: Workplace Dialogues and Meetings 4.4 Listening for Numbers, Dates, and Decisions — Traps and Strategies

5 Part 2: Listening & Reading Comprehension (聴読解)

5.1 状況把握問題: Situation Comprehension (Photo + Audio) 5.2 資料聴読解問題: Graphs, Charts, and Tables 5.3 資料聴読解問題: Schedules, Advertisements, and Quotations 5.4 総合聴読解問題: Long Document/Audio Pairs and Time Management

6 Part 3 Reading: Vocabulary, Grammar, and Expressions

6.1 語彙・文法: Vocabulary in Context 6.2 語彙・文法: Grammar in Business Sentences 6.3 表現読解: Choosing the Right Honorific Form 6.4 表現読解: Business Set Phrases in Writing

7 Part 3 Reading: Comprehensive Reading

7.1 総合読解: Business Emails 7.2 総合読解: Internal Notices, Memos, and Meeting Minutes 7.3 総合読解: Reports and News Articles 7.4 Reading Strategy: Skim, Locate, Infer

8 Test-Day Strategy and Final Review

8.1 CBT Test-Day Logistics, ID, and NDA 8.2 Pacing Across the Three Parts 8.3 Common Traps and Distractor Patterns 8.4 Three-Month Study Plan and Final Review

8.3 Common Traps and Distractor Patterns

Key Takeaways Explain This Topic AI

BJT distractors follow ten recurring patterns including right-verb-wrong-subject, right-number-wrong-row, and polarity flip.

Polarity flips such as 増加 vs 減少, おかげ vs せい, and 赤字 vs 黒字 are among the most common traps in Part 3 reading.

Part 1 frequently uses similar-sounding verbs such as 書類/写真, 署名/捺印, and numbers such as 14/40 or 17/70.

Part 2 traps include bar chart axis confusion (年 vs 月, % vs 割合), table row/column swaps, and AM/PM schedule swaps.

A reliable counter-strategy is to eliminate two options first, then choose between the remaining two.

Last updated: July 2026

8.3 Common Traps and Distractor Patterns

The BJT is a four-option multiple-choice test, which means three out of every four options are designed to look right. Understanding how distractors are constructed is more efficient than memorizing every vocabulary item, because the same trap patterns recur across all three parts.

Ten Recurring Distractor Patterns

# Trap Example

1 Right verb, wrong subject Option uses humble form (謙譲語) for the customer's action that should be respectful (尊敬語)

  • 2 Right topic, wrong scope Option names a subtopic that was mentioned, not the main topic of the passage
  • 3 Right number, wrong row Option quotes the sales figure from the previous year instead of the current year
  • 4 Right data, wrong question Option names a fact from the document that does not answer the actual question
  • 5 Tempting synonym Option uses a near-synonym of the correct answer but with wrong nuance (e.g., 検討 vs 考慮)
  • 6 Polarity flip Option reverses 増加/減少, おかげ/せい, 赤字/黒字, 利益/損失
  • 7 First-mention trap Option names the first thing mentioned in the audio, not the conclusion

8 Mid-conversation correction Speaker says one thing then corrects; option quotes the original, not the correction

9 Conditional answer Option states the decision without the condition attached (e.g., 「値上げします」 without 「もし原料費が上がれば」)

  • 10 Register mismatch Option uses casual form in a formal business context, or vice versa
  • Part-Specific Traps
  • Part 1 Traps (聴解)

Part 1 relies on phonetic confusion and memory limits.

Similar-sounding words : 書類 (shorui, documents) vs 写真 (shashin, photo); 署名 (shomei, signature) vs 捺印 (nattin, stamp); コピー (copy) vs コピー機 (copy machine).

Number pairs : 14 (jūyon) vs 40 (yonjū); 17 (jūnana) vs 70 (nanajū); 9 (kyū) vs 19 (jūkyū).

First-mention trap : The speaker mentions one item first as background, then names a different item as the actual answer.

Mid-conversation correction : 「田中部長が行きます…あ、失礼しました、鈴木部長に変わります」 — the answer is 鈴木部長, not 田中部長.

Part 2 Traps (聴読解)

Part 2 traps exploit the simultaneous reading and listening load.

Bar chart axis confusion : confusing 年 (year) and 月 (month) on the x-axis, or reading % vs 割合 (proportion) on the y-axis.

Table row/column swap : option quotes a number from the wrong row, e.g., reading the Tokyo row when the question asked about Osaka.

Schedule AM/PM swap : option uses 9:00 (morning) when the meeting is actually 21:00 (evening).

Wrong chart selected : the document contains three charts; the option quotes from the chart that does not answer the question.

Part 3 Traps (読解)

Part 3 traps are grammatical and rhetorical.

二重敬語 (double honorific) : e.g., お召し上がりになる — already sonkeigo, so an option that adds further honorifics is wrong.

Polarity flip : おかげ (positive cause) vs せい (negative cause); 赤字 vs 黒字; 増加 vs 減少; 改善 vs 悪化.

Fact vs opinion : option presents a stated opinion as if it were the document's conclusion.

Conditional missing : option drops 「〜場合」 or 「〜予定」 and states the outcome as a fact.

Right verb, wrong register : option uses 言う (plain) for a customer's action that should be おっしゃる (sonkeigo).

  • Counter-Strategies
  • For Listening (Parts 1 and 2)

Take notes during the audio. Write the speaker, the topic, and one keyword per option. Do not rely on memory.

Listen for corrections. Words like あ、失礼しました、訂正します、いや、ではなく flag a correction.

Watch for conditionals. もし、〜たら、〜場合、〜予定, 予定 signal that the answer depends on a condition.

For Reading (Part 3)

Read the question first , then locate the keyword in the passage. Do not read the whole passage before reading the question.

Check polarity first : is the passage saying the number went up or down? Is the cause positive or negative?

Then check register : is the actor a customer (sonkeigo), a colleague (teineigo), or the speaker themselves (kenjougo)?

Then check verb form : is the verb plain, respectful, humble, or formal?

For All Parts

Eliminate two options first , then choose between the remaining two. Two distractors are usually easy to spot; the third is the subtle one.

Do not anchor to the first option that looks right. Read all four before marking.

Match scope : the correct answer answers the question that was asked, not a related question.

Worked Examples of Distractor Analysis

  • Question Type Distractor Trap Type
  • 「会議の参加者は誰ですか」 Option quotes 田中部長, but speaker corrected to 鈴木部長 Mid-conversation correction
  • 「グラフが示していることは何ですか」 Option quotes a number from the previous year's bar Right number, wrong row
  • 「田中部長はどうされますか」 Option uses おっしゃる (sonkeigo) for 田中部長's own humble action Right verb, wrong subject
  • 「来月の売上はどうなりますか」 Option says 「増加します」 without the conditional 「もし原料費が上がれば」 Conditional answer
  • 「理由は何ですか」 Option says 「おかげで」 when the passage describes a negative cause Polarity flip
  • Vocabulary for Distractor Analysis

These words appear in questions and explanations about distractors:

  • 似て非なる (similar but different)
  • 逆 (opposite)
  • 部分一致 (partial match)
  • 全体不一致 (overall mismatch)
  • 訂正 (correction)
  • 条件付き (conditional)

Recognizing these trap patterns is a skill that compounds across the test. Once you have identified a distractor pattern, the same option in a future question becomes easy to spot, which is why drilling the patterns is more efficient than drilling individual questions.