When you are placing executive assistants, chemistry is everything. With a technology need, culture fit is not as important. Typically companies are looking for very specific skills such as Java.

If you need someone to help you with a presentation first thing in the morning, you want to be able to place an order with by phone or on line day or night since everything is so deadline-oriented these days.

Most big agencies use the same types of tests, so if a temp takes it enough times, they will eventually learn the test. Make sure the testing is comprehensive.