Watson Glaser Deduction Section Prep Guide [2024]
Shlomik Silbiger

Shlomik, Watson Glaser Test Expert at JobTestPrep.

Have a question? Contact me at: ask_the_team@jobtestprep.com

In the Deduction section, each question provides a premise followed by a proposed conclusion. Your goal is to determine if the conclusion unquestionably and absolutely follows from the premise.


Watson Glaser Deduction Example

Every Real Estate asset is either very large or situated in central areas, but not both. Furthermore, no apartment is untrendy, and all trendy Real Estate assets are very large.

Fashionable real estate assets are situated either in outlying areas or are of a modest size.


Conclusion Follows
Conclusion Does Not Follow
Correct Answer
Incorrect Answer

Let’s solve this questions using Venn diagrams:

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Keep in mind that in the Watson Glaser test, the statement "Either A – or B" implies that "all items must exclusively belong to either category A or category B, without any overlap or omission."

It is feasible for all items to fall into category A or all items to fall into category B.

Hence, the conclusion is valid.

Want more questions? Try a free Watson Glaser sample test.

Tips for the Watson Glaser Deduction Section


Tip #1 – Assumption of Universal Truth
In the Watson Glaser Deduction section, it is important to assume that the premises in each question are universally true, without any exceptions. For example, when a statement says "apples are tasty," it should be interpreted as meaning "all apples are tasty," including both rotten and unripe apples.

Tip #2 – Sole Reliance on Provided Premises
When tackling questions in the Deduction section, rely exclusively on the information presented in the premises, even if you personally believe that certain conclusions may or may not align with your general knowledge.

Tip #3 – Utilize the NOT Triangle Technique
The NOT Triangle, which stands for Negative, Transpose, and Only, proves to be an invaluable tool in the Deduction section. It enables you to rephrase premises to better suit the requirements of a specific question.

Here's a summary of how it works:

You can rephrase a premise without altering its meaning by employing TWO elements from the NOT Triangle.

For example:

Original Premise: All carrots are orange.

Using (N+T): All things that are not orange are not carrots.
Using (O+T): Only orange things are carrots.
Using (O+N): Only if something is not a carrot, it is not orange.


The NOT Triangle is extensively covered in the Complete Watson Glaser Prep Course.


Tip #4 – Don't Trust Your Intuition

Although some candidates may rely on their intuition to solve deduction questions, I strongly advise against this approach. It is more effective to employ systematic problem-solving techniques, such as Venn diagrams or Letter Coding.

Both methods are covered in the Complete Watson Glaser Prep Course.

Preparing for the Watson Glaser Test

By providing questions that closely mimic the rules and formatting of the authentic Watson Glaser assessment, JobTestPrep's Complete Watson Glaser Prep Course can assist you in excelling in the test, including the Deduction section.


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