How To Prepare For The Watson Glaser Test: Format, Sections And Expert Tips

So you have been asked to complete the Watson Glaser Critical Thinking Appraisal and you are wondering what to expect and how to prepare for the Watson Glaser test. This test is not about what you already know or your technical expertise. Instead, it assesses how you interpret information, spot assumptions, evaluate arguments and draw logical conclusions under time pressure.

Understanding the format of the assessment and practising the style of thinking it requires can make a real difference to your confidence and performance on the day. Before you start, make sure you read any information sent by the organisation asking you to take the assessment, including your deadline and who to contact if you have questions about the test or technical issues.

To set yourself up for success:

• Do not rush reading the questions – accuracy matters more than speed.

• Avoid spending too long on a single question – you can come back if time allows.

• Try not to let personal opinions influence your logical judgement.

• Use any extra time at the end to sense‑check your answers.

About The Watson Glaser Critical Thinking Appraisal

The Watson Glaser Critical Thinking Appraisal has been in use since the 1960s and has been updated several times to keep pace with modern roles and technology. It is designed to measure core critical thinking skills: recognising that a problem exists, identifying and evaluating evidence and using that evidence to reach reasoned conclusions and decide on a course of action.

The most widely used version is the Watson Glaser III, which is delivered online and typically consists of 40 multiple‑choice questions to be completed in 30 minutes, unless reasonable adjustments have been agreed or an untimed version is being used. As with any GFB online assessment, you will receive clear on‑screen instructions before you begin. Take time to read these carefully and only click “start” when you are sure you understand what is required.

The Watson Glaser III includes example questions as part of the instructions, and some organisations also provide full practice tests so you can familiarise yourself with the content and format. If a practice test is available to you, we strongly recommend you complete it as part of your preparation.

GFB’s version of the Watson Glaser is item‑banked. This means each test is assembled from a large pool of questions, so it is extremely unlikely you will see exactly the same set of items if you have taken the assessment before. Item banking, together with a range of technical protection measures, helps to keep the test secure while remaining accessible for candidates who use assistive or adaptive technologies.

Although the specific questions change from test to test, the structure is always the same. Understanding the different sections is a key part of how to prepare for the Watson Glaser test, because it helps you know what type of thinking each set of questions is looking for.

The Format And Sections Of The Watson Glaser Test

The Watson Glaser is a multiple‑choice online assessment with five sections. Each section begins with an explanation of what is being assessed and the answer options available. There are no trick questions, but it is essential to read the instructions for each section carefully, as what counts as a correct answer can change from one section to the next.

Below is an overview of each section.

1. Inference (5 questions)

Inference questions ask you to rate the probability that a statement is true based on a short piece of information. You must treat the information in the passage as accurate and ignore any outside knowledge you may have.

You will see:

• A single statement or short scenario you must assume is true.

• A series of possible inferences based on that statement.

• A fixed response scale (for example: true, probably true, insufficient data, probably false, false).

Your task is to decide how well each inference is supported by the information given, not whether you think it is true in real life.

2. Recognition Of Assumptions (12 questions)

This section focuses on identifying unstated assumptions or presuppositions that sit behind a given statement. You will be given a statement, followed by a series of possible assumptions related to it.

For each one, you need to decide whether the writer or speaker is assuming that statement to be true, even if it is not explicitly stated. The key is to separate what has actually been said from what is merely being taken for granted.

3. Deduction (5 questions)

Deduction questions ask whether a conclusion necessarily follows from the information in a short passage. You will see a piece of text and several proposed conclusions. For each one, you must decide whether the conclusion logically follows or does not follow, assuming that everything in the passage is true.

An important part of preparing for this section is getting used to treating deductions as absolute: a conclusion either must follow from the information, or it does not. “Probably true” is not enough.

4. Interpretation (6 questions)

In the interpretation section, you are again given a short passage and a set of possible conclusions. This time your focus is on weighing the evidence and deciding whether the conclusion is supported beyond reasonable doubt by what you have read.

You must:

• Assume everything in the passage is true.

• Judge the strength of the link between the passage and each conclusion.

• Decide whether each conclusion follows or does not follow, based on the information provided.

5. Evaluation Of Arguments (12 questions)

The final section asks you to evaluate the strength and relevance of arguments relating to a particular question or issue. You will see a question, followed by a number of arguments for or against a particular answer.

Your task is to decide whether each argument is strong or weak. Strong arguments are directly relevant, logical and based on the information given. Weak arguments may rely on emotion, irrelevant information or unsupported assumptions.

How Long Is The Watson Glaser Test And What Should You Do Before You Start?

The standard time allowed to complete the Watson Glaser test is 30 minutes, although reasonable adjustments can be made where appropriate. The time you take will not change your score, but you will not be able to answer any additional questions once the time has expired. 

When you start the timed assessment you will see:

• A countdown clock in the top right‑hand corner showing your remaining time.

• A progress bar along the bottom of the screen so you can see how far through the test you are.

Once the timer starts it cannot be paused or restarted, so planning ahead is important.

 Before you click “begin”, run through this quick checklist:

• Make sure your internet connection is stable.

• Set aside at least 30 minutes of uninterrupted time.

• Turn off notifications and remove other potential distractions.

• Read all of the on‑screen instructions carefully.

• Only start the test when you feel ready to focus fully.

• Spending a few minutes setting up the right environment is one of the simplest ways to prepare for the Watson Glaser test and protect your performance.

Watson Glaser Test‑Day Tips

On the day of the assessment, your mindset and test‑taking strategy will have as much impact as your underlying ability. Use these practical tips to help you perform at your best:

Use your time wisely

Do not spend too long on a single question. If you get stuck, make your best judgement, flag the question if the platform allows it and move on. If you finish early, go back and review any items you were unsure about. The time it takes you to complete the test does not affect your score, so use every minute.

Brush up on the instructions

Being familiar with the Watson Glaser format before test day will help you work quickly and accurately. Re‑read the section overviews above and, if you have access to practice questions, complete them under timed conditions so the style of wording feels familiar.

Answer only based on the information given

Many questions require you to ignore your general knowledge or personal experience. Focus only on the information in the passage or statement and avoid filling gaps with assumptions.

Stay calm and focused

It is normal to find some questions challenging. Taking a moment to breathe, re‑read the key part of the question and remind yourself of the section instructions can stop small wobbles turning into lost time.

For broader advice that applies to all ability and personality tests, take a look at our article on expert tips for taking psychometric tests on the GFB blog.

How To Improve The Critical Thinking Skills The Watson Glaser Assesses

Although some aspects of critical thinking are considered relatively stable, you can still improve how you approach Watson Glaser questions by practising specific habits. As you prepare for the Watson Glaser test, try to apply these techniques when you read articles, reports or case studies:

Ask basic questions to surface assumptions

Get used to asking yourself “What is being taken for granted here?” and “How do I know this is true?”. Noticing hidden assumptions is essential for the recognition of assumptions and evaluation sections.

Rate the quality of assumptions

Once you have identified the assumptions behind an argument, consider how reasonable each one is and what would happen if it turned out to be false. This strengthens your ability to judge the robustness of a line of reasoning.

Watch out for persuasion techniques

Look for emotional language, loaded terms or selective use of statistics that are designed to persuade rather than inform. This will help you distinguish strong arguments from weak ones and avoid being swayed by style over substance.

Be objective and balanced

Actively look for evidence both for and against a position, especially when it challenges your existing view. Aim for information that is clear, relevant, recent and credible, and be aware of how your emotions might influence your judgement.

Visualise complex information

When a passage is dense or complex, sketching out a quick diagram, table or flow chart can make the relationships between statements clearer and reveal logical gaps that are easy to miss when you only read the text.

Generate and compare multiple conclusions

Practice coming up with several possible conclusions from the same set of facts, then evaluate who benefits from each, how well each is supported by the evidence and what the consequences might be. This mirrors the interpretive and evaluative thinking used throughout the Watson Glaser.

Final reassurance for test‑takers

Overall, the Watson Glaser is designed to assess how you think, not what you know. If you take time to understand the format, practise the different question types and apply the strategies above, you will be well prepared for the Watson Glaser test. As you work through your practice, keep reminding yourself that learning how to prepare for the Watson Glaser test is about building calm, consistent thinking habits rather than cramming facts.

If you are about to sit the assessment, remove distractions, give yourself space to concentrate and trust the preparation you have done. Approaching each question logically and focusing only on the information provided is one of the most effective ways to prepare for the Watson Glaser test and perform at your best on the day.

Take The Next Step: Get Support With The Watson Glaser

Whether you are a candidate or an employer, you do not need to work out how to prepare for the Watson Glaser test on your own. GFB specialises in the Watson Glaser Critical Thinking Appraisal and supports thousands of candidates and hiring teams every year.

If you are ready to feel confident, make better‑informed decisions and give every candidate a fair chance to demonstrate their critical thinking, get in touch with GFB today and let us help you and your organisation master how to prepare for the Watson Glaser test.