Some people are worth more to your organization because they can quickly reach high levels of productivity. A high performing employee can be 2 to 4 times more productive than a low performer so they provide a much quicker return on your hiring investment.
Assessment of general potential and screening for over-confidence and under-confidence is a standard part of all tests.
When advanced mathematical skills are important to job performance, you can choose to assess numerical pattern recognition and/or financial problem solving as well.
You can add tests of vocabulary, analogies and concepts when communication in English is a key position requirement.