Why Cert Examinations are Biased (Non-Wow Topic)
Zekta Chan
One of my friends is really upset about a cert examination (MCSE, CCNA, LCC etc), which he took recently. Then I told him it’s okay, as these exams are inherently biased.
From the perspective of an exam authority, to setup a “Professional Certification Exam“, what makes a (new) exam successful?
1. The certified people perform better.
2. The exam is accepted by the existing personnel in the industry – otherwise they’ll reject the exam due to their vested interests. This is where exemption of certain criteria for existing personnel comes in when a new exam is created.
3. Getting certified will grant a candidate a better chance of being hired. The incentive for applicants to take the exam is to stand out from the group.
4. The exam provides a way for management to justify their hiring decisions, as they believe a certified employee is a safe choice.
Due to the self-reinforced loop of 1-3, a reputation will be built for the certification.
As we can tell, only reason 1 is essential for the benefits of the employer and employee, and the others are purely for marketing purposes.
1. The result will always be biased toward false negative (consider a qualified candidate who fails), rather than false positive, (granting a non-qualified candidate a pass). This is because false positives harm the exams reputation, while false negatives do not, (and also grant another exam fee -> $$) (For reason 1).
2. Biased questions which favour the inner circle will be asked in the exam, so that the existing personnel have an advantage over the new comer, to protect their privileged position. (For reason 2)
3. The exam has to have a high fail rate for new comers. Think of guilds in RL 16th-17th century, the age of Adam Smith. Limiting the number of apprentices for a master craftsman, thus restricting workers from entering the industry, to enforce the scarcity of workmen and protect the wage of “the professionals”. (For reason 3)
Ironically, the more people fail the exam; the more valuable it becomes to pass.
So my advice for my friend was, don’t be too upset by the “exam game”. It’s meant to be hard, and that is exactly the reason why you take it.
If the Odds are good, and there are things you can do to get a pass, take it. Otherwise, don’t bother.
P.s I am honored to have Zupa edited this article, I want to show my gratitude for his generous.
Until Next Time,
Zekta
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Tags: Tags: Wow Econ Research Project
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