I thought that my child custody evaluator was a total fruitcake, but I am now learning that the entire field is overrun with quacks. There are a bunch of them who use the Rorschach Inkblot Test! That is, they show the parents some meaningless-looking inkblots, ask them what it looks like to them, and try to use the answers to decide who is a better parent. It is about as scientific as using horoscopes.
If you happen to get one of those quacks using inkblots, be sure and check out the classic inkblots, so you'll know what answers give a favorable response.