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PEN Personality Test

The PEN model is a biological theory of personality developed by H.J. Eysenck, Ph.D. It measures the higher-order traits of Extroversion, Neuroticism, and Psychoticism according to a behaviorist theoretical framework. Eysenck believed that competing personality tests, such as the Big Five, are a hodgepodge of muddled theorizing, and that the PEN was the true scientific way of measuring personality.

What are your PEN traits? For each of the following items, indicate your level of agreement below.

Question 1 of 24

I strive never to be rude to people.



The IDR-PEN-PT© is the property of IDR Labs International.

This test has been made with the aid of professional analysts who have experience with personality testing. Even so, please keep in mind that tests such as these are merely indicators – a first peek at the system to get you started.

PEN Personality Tests, whether they are professional, or used in academic research, or free online tests like this one, are indicators to help give you a clue as to your traits in the PEN model of personality. As far as the present authors are concerned, no test ever devised can designate your PEN traits with complete accuracy or reliability, and no PEN model personality test can replace familiarizing yourself with PEN theory in depth.

The authors of this free online PEN personality test are certified in the use of numerous different personality tests and have worked professionally with psychology, political psychology, and personality testing. Prior to using our free online test, please note that the results are provided "as-is", for free, and should not be construed as providing professional or certified advice of any kind. For more on our online Team Roles test, please consult our Terms of Service.

Why Use This Test?

1. Free. This online PEN personality test is delivered to you free of charge and will allow you to obtain your scores in the PEN model, as devised by H.J. Eysenck, Ph.D.

2. Biological Framework. While other tests simply adopt a lexical or psychodynamic framework, the PEN personality test utilizes a clear biological and behavioristic framework as its theoretical base.

3. Statistical controls. Test scores are logged into an anonymized database. Statistical analysis of the test is conducted to ensure maximum accuracy and validity of the test scores.

4. Made by Professionals. The authors of this free online personality test are certified in the use of different personality tests and have worked professionally with typology and personality testing.