Where can I look for information about psychometric tests?

Thanks Rami, this is the case we are considering:

Student A

Moderately Proficient, Moderately Proficient, Below Proficient, Below Proficient, Moderately Proficient --> PASS

Student B

Moderately Proficient, Below Proficient , Moderately Proficient, Moderately Proficient ,Moderately Proficient --> FAIL

More opinions will be welcome.

PMI defines the levels of “proficiency” as follows, but students only obtain that data (not %):

Proficient - indicates performance is above the average level of knowledge in this domain. Moderately Proficient - indicates performance that is at the average level of knowledge in this domain.
Below Proficient - indicates performance is below the average level of knowledge in this domain.

In psychometric testing, pass percentage is not revealed. It is rather a percentile based testing in which percentile is established by the number of people appearing in the exam. For example if you want to pick top 20 students only from an exam taken by 100 students, whomsoever gets top 20 positions would be declared successful and remaining all will fail. No matter the 20th person passes it at 30% or 90%, anyone below that percentage would NOT pass. That means it is an open competition and nobody knows on what percent will they be able to clear the PMP exam. If there are many people appearing in exam, there is a high likelihood that pass percentage would go very high, maybe like 95% and even if you got 89% marks, you will still be declared as fail.

Now coming to proficiency levels of PMP Exam, it is a very generic indication of how well you have performed in any of the domains. You should be able to score Moderately Proficient in all domains if you want to be sure to PASS. What we have seen is that sometimes people Moderately Proficient on only 3 domains are declared PASS while sometimes someone with Moderate Proficiency in 4 still fails, though very seldom.

Initiation and Closing Domains carry a bit lower weightage and even if you fail both of them and still able to score well in other three domains, you CAN pass with Moderate Proficiency in Planning, Execution, Monitoring and Control. Generally Moderately Proficient in 4 domains mean you will pass, but if you passed marginally in any of the three important domains with high weightage, then initiation and closing may not help you.

I am not saying we do selective study or give more importance to one domain and not to the others, but middle three domains are weighted much more than the first and last domains. I would suggest you prepare so well that you secure at least Moderate Proficiency in 4 if not all 5 domains. In layman language target for 85% of overall pass score, and that would most probably translate into the right percentile. Another precaution, never appear for PMP exam when it is changing or most of the people are rushing to take exam, choose a moderate period when everything is well-established and in order. Take as much practice exams as you can on last three days before exam and have a very good night's rest before the exam, always try to sit in the exam in the morning when you are fresh and not tired.