ICAC Investigator Written Test study guide
ICAC Investigator Written Test · Work through your exam, one topic at a time.
The ICAC Investigator Written Test is the written stage used by the Independent Commission Against Corruption in Hong Kong to screen applicants for Investigator posts. It is not a knowledge quiz about corruption law alone: it is a broad screen that tests whether you can read and write accurately in Chinese and English, work confidently with numbers and data, reason logically under time pressure, and show awareness of Hong Kong's constitutional and anti-corruption framework. The ICAC Investigator Written Test study guide has 7 sections and about 2,814 words.
01Chinese Language Proficiency: 語文運用與閱讀理解
The Chinese Language Proficiency paper is practical, not literary. It checks whether you can read and write the Chinese used in ICAC work: witness statements, investigation summaries, internal minutes and correspondence.
350 words, about 2 min02English Language Proficiency: Grammar, Usage and Comprehension
English Language Proficiency tests the English you need for statements, reports and correspondence. It covers grammar and usage, sentence completion, error identification, paragraph improvement and reading comprehension.
351 words, about 2 min03Numerical and Analytical Reasoning: Percentages, Ratios and Data
Numerical and Analytical Reasoning checks whether you can extract figures from tables, prose and charts, choose the right operation, and present a sensible answer under time pressure. Expect percentages, ratios, rates, averages, unit conversion, currency and data interpretation.
376 words, about 2 min04Logical Reasoning and Problem Solving: Deduction and Assumptions
Logical Reasoning and Problem Solving tests valid deduction, not general intelligence. Items include syllogisms, conditional statements, ordering puzzles, assumptions, strengthening and weakening, and conclusions drawn from short passages.
370 words, about 2 min05Hong Kong Basic Law and National Security Law
This domain tests the constitutional framework of the Hong Kong Special Administrative Region and the national security offences that apply in Hong Kong. You need article-level awareness, not political commentary: what the Basic Law provides, how the National Security Law 2020 operates, and how the 2024 local ordinance completed Article 23.
508 words, about 3 min06Integrity, Ethics and Anti-Corruption Awareness
Integrity, Ethics and Anti-Corruption Awareness tests whether you can apply the Prevention of Bribery Ordinance (Cap. 201) and the ICAC's ethical standards to realistic scenarios.
447 words, about 2 min07Current Affairs and General Knowledge: Institutions and Information
Current Affairs and General Knowledge checks whether you understand Hong Kong's governance, constitutional order and major public issues, and whether you can evaluate information about them. It rewards stable knowledge of institutions and a disciplined reading of news, not memorised headlines.
412 words, about 2 min